Consulta: subjectFacets:"Physiology"
Registros recuperados: 122
Data/hora: 29/05/2024 03:36:36

Efecto de la condición ambiental y la fertilización en el preacondicionamiento de Pinus engelmannii CARR. en el vivero y su desempeño en campo.
Provedor de dados: 32
Autores: García Pérez, José Luis.
El preacondicionamiento de la planta se realiza durante la etapa final de vivero y tiene como propósito favorecer su lignificación para que sea capaz de tolerar el estrés hídrico, nutricional y mecánico en los sitios de plantación. Esto se logra mediante un manejo adecuado de prácticas culturales como la fertilización y los riegos, mientras se elimina el efecto invernadero las plantas se exponen a condiciones ambientales de temperatura, humedad relativa e intensidad de luz, semejantes a las presentes en el campo. Se evaluó el efecto de: a) cuatro condiciones ambientales (invernadero, intemperie, malla sombra y malla sombra más intemperie) y b) tres niveles de fertilización (sin fertilización, dosis baja y dosis alta) y la interacción de éstos durante el...
Palavras-chave: Pinus engelmannii; Calidad de planta; Fisiología; Morfología; Nutrimentos; Seedling quality; Physiology; Morphology; Nutrients; Forestal; Maestría; Condición ambiental.
Ano: 2014
URL: http://hdl.handle.net/10521/2334

GAS EXCHANGE IN ‘POME’ BANANA PLANTS GROWN UNDER DIFFERENT IRRIGATION SYSTEMS
Provedor de dados: 70
Autores: Arantes,Alessandro de M.; Donato,Sérgio L. R.; Siqueira,Dalmo L. de; Coelho,Eugênio F.
Abstract This study aimed to evaluate Pome type bananas grown under different irrigation systems. Seventy-two treatments were used in a factorial 3×2×12 scheme, where factors consisted of three irrigation systems (under-tree sprinkling, micro-sprinkling, and dripping), two cultivars (‘Prata-Anã‘ and ‘BRS Platina’), and twelve evaluation periods (months). The treatments were arranged in a completely randomized design with five repetitions. During the third production cycle, plant phytotechnical and physiological traits were evaluated in different months at five different times of the day. The results showed no significant interactions between cultivars and irrigation systems. All the assessed traits varied for each irrigation system, except for plant yield....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp; AAB and AAAB genotypes; Physiology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000200197

Comportamento hídrico de Vouacapoua americana Aubl (acapu) e Licania macrophylla Benth (anoerá), nas condições de mata amazônica de terra firme.
Provedor de dados: 14
Autores: MORAES, V. H. F.
bitstream/item/146482/1/BOTANICA-FISIOLOGIAVEGETAL.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Anoera; Licania macrophylla; Brasil; Specie; Forest; Growth.; Acapu; Água; Crescimento; Espécie; Fisiologia; Floresta; Vouacapoua Americana.; Amazonia; Physiology; Water.
Ano: 1970
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376101

Importancia da adubacao e da nutricao na qualidade da soja.
Provedor de dados: 14
Autores: SFREDO, G. J.; CARRAO-PANIZZI, M.C.
Situacao da producao; Valor nutritivo da soja; Funcoes dos nutrientes: Macronutrientes (N, P, K, Ca, Mg e S) Nitrogenio, Fosforo, Potassio, Calcio, Magnesio, Enxofre e Micronutrientes (Fe, Mn, An, Cu, B, Mo, Cl, Ni e Co) Ferro, Boro, Cloro, Molibdenio, Cobre, Zinco, Manganes, Niquel, Cobalto; Exigencias nutricionais da soja: Extracao e exportacao de nutrientes, Acumulo de materia seca da planta, Acumulo de nutrientes na planta; Respostas da soja a nutrientes aplicados: Nitrogenio, Potassio, Enxofre, Molibdenio, Interacao entre nutrientes (Nitrogenio e Potassio, Fosforo e potassio, Nitrogenio e enxofre, Fosforo, enxofre e molibdenio, Enxofre e zinco).
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Macronutriente; Micronutriente; Brasil; Parana; Soybean; Fertilization; Macronutrient; Micronutrient; Grain; Quality.; Adubação; Fisiologia; Grão; Nutrição Vegetal; Qualidade; Soja.; Brazil; Plant nutrition.; Physiology.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448750

Consumo voluntário: fatores relacionados com a degradação e passagem da forragem pelo rúmen.
Provedor de dados: 14
Autores: THIAGO, L. R. L. de S.; GILL, M.
Digestão a nível de rúmen. Dinâmica da passagem.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovine; Consumption.; Bovino; Consumo; Digestibilidade; Fisiologia; Rúmen; Silagem.; Digestibility; Physiology; Silage.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/322953

Avaliacao de alguns fatores do meio que influenciam a adaptacao, o comportamento fisiologico e o desempenho de bovinos da raca Sindhi, nas condicoes ambientais do semi-arido brasileiro: relatorio parcial das atividades referentes ao periodo de 01/09/97 a 01/07/98.
Provedor de dados: 14
Autores: TURCO, S. H. N.
Este experimento esta sendo conduzido, no campo experimental da caatinga, Embrapa Semi-Arido, localizado no municipio de Petrolina-PE, regiao semi-arida do Nordeste brasileiro. Estao sendo utilizados 22 animais, da raca Sindhi, sendo dez femeas e doze machos, com idade variando de 1 a 4 anos. O manejo para todas as categorias animais e o mesmo utilizado pelo sistema de producao Embrapa Semi-Arido, onde sao manejadas, todo o periodo do experimento, em pastagem nativa (caatinga), durante dois a quatro meses e em pastagem cultivada (capim buffel), durante o restante do ano. As informacoes basicas para este trabalho foram: a) variaveis fisiologicas: temperatura retal (TR); temperatura da pele (TP); frequencia respiratoria (FR); b) variaveis anatomicas:...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Rca Sindhi; Comportamento fisiologico; Adaptacao; Desempenho; Semi-Arido; Bovine; Behaviour; Adaptation; Bovino; Performance; Breeds; Cattle; Physiology.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133625

Ata e resumos.
Provedor de dados: 14
Autores: REUNIAO DE PESQUISA DE SOJA DA REGIAO SUL, 12., 1984, Pelotas.
Sessao de abertura; Sessao de encerramento; Comissao de genetica e melhoramento; Ecologia, fisiologia e praticas culturais; Entomologia; Nutricao vegetal e uso do solo; Tecnologia e producao de sementes/fitopatologia; Controle de plantas daninhas; Relacao dos participantes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Congresso; Brasil; Regiao Sul; Soybean; Weed; Seed; Disease; Insect; Cultural practice; Congress; South region.; Doença; Fisiologia; Inseto; Melhoramento; Pesquisa; Pratica Cultural; Semente; Soja.; Brazil; Breeding; Research.; Physiology.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/450568

Fisiologia e manejo de plantas forageiras.
Provedor de dados: 14
Autores: COSTA, N. de L.; MAGALHAES, J. A.; TOWNSEND, C. R.; PAULINO, V. T.
As pastagens representam a principal e mais barata fonte de alimentos para os ruminantes. Esta publicação reúne informações sobre o manejo e a fisiologia das pastagens. Sendo assim, apresenta os seguintes tópicos: Princípios básicos do manejo de pastagens; Aspectos morfológicos; Aspectos fisiológicos; Taxa de aparecimento foliar (TAF); Taxa de expansão foliar (TEF); Morfogênese; Carboidratos não-estruturais (CNE); Interação IAF x CNE; Práticas de manejo de pastagens; Manejo de formação; Sistemas de pastejo; Tipos de pastejo; Divisão das pastagens; Sistemas de pastejo x produção animal.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Pastagem; Planta Forrageira; Manejo do Solo; Rendimento.; Fisiologia; Forage quality; Forage yield.; Physiology; Pasture management.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/916005

História e uso do silicato de sódio na agricultura.
Provedor de dados: 14
Autores: LIMA FILHO, O. F. de.
bitstream/item/125220/1/LIVRO-SILICATO-2009-online.pdf
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Agroecologia; Estresse; Growth; Nutrient; Plant; Fertilizer; Organic agriculture; Agro-ecology; Disease.; Adubação; Agricultura Orgânica; Crescimento; Doença; Fisiologia; Nutriente; Planta; Praga; Silício; Solo.; Physiology; Pests; Silicon; Soil.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/696871

A vitivinicultura no Semiárido brasileiro.
Provedor de dados: 14
Autores: SOARES, J. M.; LEAO, P. C. de S.
Histórico e importância Socieconômica; Exigências climáticas; Aspectos fisiológicos; Melhoramento genético; Principais cultivares; Mecanização agrícola, manejo e conservação do solo; Implantação do vinhedo; Manejo da copa; Irrigação; Nutrição e adubação; Fertirrigação; Pragas e alternativas de controle; Fisiologia, tecnologia e manejo pós-colheita; Sistema de produção integrada; Vitivinicultura e enologia; Custos de produção; Mercados de uvas de mesa e de vinho.
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Cultivar; Vale do São Francisco; Manejo de copa; Implantação do vinhedo; Exportação de fruta; Videira; Uva; Melhoramento genético vegetal; Sistema de Cultivo; Variedade; Adubação; Irrigação; Praga; Doença; Custo de Produção; Enologia; Mercado; Produção Integrada; Colheita; Pós-Colheita; Fertirrigação; Plantio; Vinho; Grapes; Irrigation; Vitis; Viticulture; Physiology; Postharvest physiology; Postharvest technology.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/513781

Conservação de sementes de caupi.
Provedor de dados: 14
Autores: FIGUEIRÊDO, F. J. C.; FRAZÃO, D. A. C.; OLIVEIRA, R. P. de; CARVALHO, J. E. U. de.
bitstream/item/33796/1/CPATU-CirTec31.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caupi; Armazenagem; IPEAN-V-69; Campo Experimental de Tracuateua; Pará; Brasil; Cowpea; Seed; Conservation; Vigour; Quality; Package.; Conservação; Embalagem; Fisiologia; Germinação; Qualidade; Semente; Vigna Unguiculata.; Amazonia; Germination; Physiology; Storage; Vigor.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381808

Armazenamento de sementes de caupi em regiões fisiográficas do Estado do Pará.
Provedor de dados: 14
Autores: FIGUEIRÊDO, F. J. C.; FRAZÃO, D. A. C.; OLIVEIRA, R. P. de; CORRÊA, J. R. V.
bitstream/item/33789/1/CPATU-CirTec30.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caupi; Armazenagem; IPEAN-v-69; Capitao-Poco; Alenquer; Altamira; Belem; Braganca; Pará; Brasil; Cowpea; Seed; Vigour; Package; Quality.; Embalagem; Fisiologia; Germinação; Qualidade; Semente; Vigna Unguiculata.; Amazonia; Germination; Physiology; Storage; Vigor.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381807

Comportamento hídrico da pimenta-do-reino (Piper nigrum L.).
Provedor de dados: 14
Autores: MORAES, V. H. F.; BASTOS, T. X.
bitstream/item/146480/1/HIDRICO-PIMENTA-DO-REINO.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Pimenta-do-reino.; Água; Fisiologia; Solo.; Black pepper; Physiology; Soil; Water.
Ano: 1972
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376106

Tamanho da semente de guaraná e sua influência na emergência e no vigor.
Provedor de dados: 14
Autores: FRAZÃO, D. A. C.; FIGUEIREDO, F. J. C.; CORREA, M. P. F.; OLIVEIRA, R. P. de; POPINIGIS, F.
bitstream/item/33547/1/CPATU-CirTec20.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Seed; Size; Quality; Vigour; Emergency.; Emergência; Fisiologia; Germinação; Guaraná; Paullinia Cupana; Semente; Qualidade; Tamanho.; Germination; Physiology; Vigor.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379478

Ecofisiologia.
Provedor de dados: 14
Autores: LIMA FILHO, J. M. P.; ASSIS, J. S. de; TEIXEIRA, A. H. de C.; CUNHA, G. A. P. da; CASTRO NETO, M. T. de.
Cultivo da manga; radiação solar; fotossíntese; interceptação da luz; fotoperíodo; temperatura; crescimento e desenvolvimento; agua ; umidade do ar e do solo; estresse hídrico; floração e frutificação.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Vale do São Francisco; Ecologia; Fisiologia; Manga; Radiação Solar; Ecology; Mangoes; Physiology.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134292

Aspectos fisiologicos da mangueira sob condicoes irrigadas
Provedor de dados: 14
Autores: CASTRO NETO, M. T.
Devido a escassez de dados tecnicos sobre a cultura da manga para a regiao do Submedio Sao Francisco, recomendacoes tecnicas sobre o comportamento fisiologico desta cultura, seriam inapropriadas. Portanto, baseando-se em nossa experiencia e em trabalhos cientificos de outros pesquisadores, o presente trabalho apresenta uma noção geral sobre a fisiologia da manga, com algumas sugestões para a melhoria da produtividade.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Mangueira.; Fisiologia; Manga; Mangifera Indica; Physiology; Physiology; Mangoes.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131693

Ocorrencia de disturbios fisiologicos (pau-preto) em procedencias de Eucalyptus pilularis, na regiao dos cerrados.
Provedor de dados: 14
Autores: MOURA, V. P. G.
bitstream/item/99323/1/comtec-57.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Plant diseases; Brasil; Disease; Forest; Pau-preto.; Cerrado; Doença de Planta; Espécie; Eucalipto; Floresta.; Fisiologia Vegetal; Eucalyptus; Physiology; Plant physiology.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549342

Respiração de sementes de cupuaçuzeiro.
Provedor de dados: 14
Autores: FIGUEIRÊDO, F. J. C.; CARVALHO, C. J. R. de; ROCHA NETO, O. G. da.
bitstream/item/32776/1/CPATU-BP188.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Belém; Pará; Brasil; Hydration.; Cupuaçu; Fisiologia; Hidratação; Peso; Respiração; Semente; Theobroma Grandiflorum.; Amazonia; Physiology; Seeds; Weight.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376621

Toxidez de micronutrientes em sorgo-sacarino: fotossíntese.
Provedor de dados: 14
Autores: LIMA FILHO, O. F. de.
bitstream/item/152197/1/BP752016.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: IRGA; Nutrient.; Fisiologia; Nutriente; Toxidez.; Sorghum Bicolor; Physiology; Toxicity.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1059140

Ocorrência de distúrbio fisiológico em seringal adulto no Estado de Rondônia.
Provedor de dados: 14
Autores: LIMA, M. I. P. M.; LISBOA, S. de M.
Em 1994, na Estacao Experimental da UEPAE Porto Velho e em areas de produtores, plantas de seringueira apresentavam rachaduras na regiao do coleto. No local afetado havia acumulo de latex coagulado e o tecido necrosado atingiu a casca e, consequentemente, os vasos laticiferos, sem, contudo, danificar o lenho. O diagnostico de laboratorio revelou nao existencia de microrganismos patogenicos e inicio de cicatrizacao natural dos tecidos, descartando a possibilidade de doenca. O problema parece ser de ordem fisiologica, pois o porta-enxerto sofreu rachaduras e exsudacao do latex, o mal nao foi seletivo. Tal fato poderia ser explicado pelo acrescimo do volume de producao do latex em periodo chuvoso. Recomenda-se inspecao periodica nos seringais e pincelamento...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Brasil; Rondonia; Rubber tree; Species; Disturbance; Distúrbio Fisiológico; Espécie; Hevea; Latex; Seringueira; Brazil; Physiology.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665281

Responses and adaptations of the adenylate energy charge and digestive enzyme activities to tidal emersion of Crassostrea gigas populations in Marennes-Oleron Bay
Provedor de dados: 5
Autores: Moal, Jeanne; Samain, Jean-francois; Le Coz, Jean-rene; Daniel, Jean-yves.
Crassostrea gigas oysters cultivated in Marennes-Oleron Bay (France), face seasonal variations in the environment: salinity, turbidity, phytoplanktonic production, and the tidal rhythm of emersion. The oysters are maintained at different depths to reduce competition for space (e.g. by settlement of mussel spat). The physiological responses of two groups of oysters to different periods of emersion were studied using a seasonal sampling strategy: one group was on a flat part of the area, and the effect of emersion was studied in a short time survey (less than three hours emersion at low tide); the other was located in a very narrow place with a steep slope. This group was subdivided into three, according to bathymetric position, to study the long term effect...
Tipo: Text
Palavras-chave: Crassostrea gigas; Physiology; Emersion; AEC; Digestive enzimes; Marennes-Oleron Bay.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00038/14885/12208.pdf

Effects of Alexandrium minutum exposure upon physiological and hematological variables of diploid and triploid oysters, Crassostrea gigas
Provedor de dados: 5
Autores: Haberkorn, Hansy; Lambert, Christophe; Le Goic, Nelly; Gueguen, Marielle; Moal, Jeanne; Palacios, Elena; Lassus, Patrick; Soudant, Philippe.
The effects of an artificial bloom of the toxin-producing dinoflagellate, Alexandrium minutum, upon physiological parameters of the Pacific oyster, Crassostrea gigas, were assessed. Diploid and triploid oysters were exposed to cultured A. minutum and compared to control diploid and triploid oysters fed T. Isochrysis. Experiments were repeated twice, in April and mid-May 2007, to investigate effects of maturation stage on oyster responses to A. minutum exposure. Oyster maturation stage, Paralytic Shellfish Toxin (PST) accumulation, as well as several digestive gland and hematological variables, were assessed at the ends of the exposures. In both experiments, triploid oysters accumulated more PSTs (approximately twice) than diploid oysters. Significant...
Tipo: Text
Palavras-chave: Oysters; Ploidy; Physiology; Harmful-algal bloom; Alexandrium minutum; PST accumulation.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00003/11378/7988.pdf

Seasonal and diurnal variability in carbon respiration, calcification and excretion rates of the abalone Haliotis tuberculata L.
Provedor de dados: 5
Autores: Chapperon, Coraline; Clavier, Jacques; Dugué, Clément; Amice, Erwan; Le Goff, Marion; Roussel, Sabine.
Abalone (Haliotis spp.) are commercially important marine shellfish species worldwide. Knowledge about the physiology of abalone that impacts life-history traits is important for a better understanding of the biology of the species and the impact of stressful husbandry procedures at different seasons. The present study quantified the seasonal and diurnal variations in four physiological parameters of the European species Haliotis tuberculata, i.e. carbon aerial and aquatic respiration, calcification and excretion rates, and the effect of prolonged aerial exposure upon abalone aerial respiration. We also investigated the effect of individual size upon these physiological parameters. Aquatic respiration and calcification rates showed an allometric...
Tipo: Text
Palavras-chave: Ormer; Metabolism; Carbon fluxes; Physiology.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00431/54243/55886.pdf

Acclimation of the marine diatom Pseudo‐nitzschia australis to different salinity conditions: effects on growth, photosynthetic activity and domoic acid content
Provedor de dados: 5
Autores: Ayache, Nour; Hervé, Fabienne; Lundholm, Nina; Amzil, Zouher; Caruana, Amandine.
oxic Pseudo‐nitzschia australis strains isolated from French coastal waters were studied to investigate their capacity to adapt to different salinities. Their acclimation to different salinity conditions (10, 20, 30, 35 and 40) was studied on growth, photosynthetic capacity, cell biovolume and domoic acid (DA) content. The strains showed ability to acclimate to a salinity range from 20 to 40, with optimal growth rates between salinities 30 and 40. The highest cell biovolume was observed at the lowest salinity 20 and was associated with the lowest growth rate. Salinity did not affect the photosynthetic activity; Fv/Fm values and the pigment contents remained high with no significant difference among salinities. An enhanced production of zeaxanthin was,...
Tipo: Text
Palavras-chave: Acclimation; Climate change; Domoic acid; Pseudo-nitzschia australis; Physiology; Salinity.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00585/69684/67552.pdf

Traditional oyster culture in France
Provedor de dados: 5
Autores: Heral, Maurice.
The indigenous oyster of mainland France, the fiat oyster, Ostrea edulis has been part of the human diet for centuries. The Romans collected them and exported them to Rome. Although tanks for holding oysters after harvesting were in use at that time (GreIon 1978) it seems that true culture was not developed along the coast contrary to the records of Pliny the Older. It appears that oysters were already being captured on hoards off the Italian coast. The exploitation of natural stocks continued through the Middle Ages and the Renaissance. However, it was not until the 17th century that oyster culture began, first in the pools of the salt marshes of the Atlantic coast and then in specially managed ponds. Papy (1941) repeats a good description given in 1688...
Tipo: Text
Palavras-chave: Rearing; Diseases; Analytical model; Overall model; Cultured stocks; Energetics; Reproduction; Nutrition; Physiology; France; Culture; Oyster.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/publication-3039.pdf

Physiology and immunity of the invasive giant African snail, Achatina (Lissachatina) fulica, intermediate host of Angiostrongylus cantonensis
Provedor de dados: 5
Autores: Lima, Mariana G.; De C. Augusto, Ronaldo; Pinheiro Da Silva, Jairo; Thiengo, Silvana C.
As one of the most successful invasive land snail species, Achatina (Lissachatina) fulica Bowdich, 1822 has achieved wide global distribution, particularly in (sub)tropical regions, with further dispersal likely due to climate change. This species of giant African snails (up to 17 cm shell length) is a pest that has extensive negative impact on agriculture and can serve as vector for several parasites, including Angiostrongylus cantonensis, a nematode parasite that causes (human) eosinophilic meningitis, an emergent disease. Investigation showed that A. cantonensis infection negatively impacts the metabolism of A. fulica by depleting polysaccharide stores of the intermediate host, compromising the energy balance of the snail. A review of the literature...
Tipo: Text
Palavras-chave: Achatina fulica; Immunology; Physiology; Nematodes; Angiostrongylus cantonensis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00599/71144/69462.pdf

DEB2009 Symposium : Dynamic Energy Budget, 30 years of research for metabolic organization, Book of abstracts
Provedor de dados: 5
We are pleased to welcome you to at the first Symposium on Metabolic organization in Brest, 19-22 April, 2009. This conference is being organized jointly by Ifremer (French Institute for the Research and Exploitation of the Sea), the Department of Theoretical Biology at Vrije Universiteit Amsterdam, the Universities of Brest (UBO), Marseille (LMGEM-UMR CNRS 6117), Caen (UMRPE2M, LBBM) and Lisbon (Instituto Superior Técnico), the IRD (French Research Institute for Development), the INRA (French National Institute for Agricultural Research), the NIOZ (RoyalNetherlands Institute for Sea Research), the IMARES Wageningen (Institute for Marine Resources and Ecosystem Studies), as all these research teams are involved in research on DEB theory. You are 81 persons...
Tipo: Text
Palavras-chave: Ecology; Bivalve; Chemistry; Ecotoxicology; Physiology; Dynamic energy budget; Biology.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/acte-6790.pdf

Effet des biodépôts de l'huître Crassostrea gigas (Thunberg) sur l'accumulation de matières organiques dans les parcs du bassin de Marennes-Oléron
Provedor de dados: 5
Autores: Sornin, Jean-marc; Feuillet, Michelle; Heral, Maurice; Deslous-paoli, Jean-marc.
The accumulation of biodeposits brings about geochemical modifications of the underlying sediment, that are noticeable. The increase can reach 83% of the amount of organic carbon. By catching the deposits on the spot and by gathering them directly from the oyster tables we get a daily deposit that can weigh, according to season, between 8 and 99 g of carbon a square meter. The recycling of important quantities of organic matter increase the oxygen needs and the most reducing environment provides opportunities for ammonification and reduction of sulfate into sulfur. So we can consider that there is as much as 4 times more sulfurous hydrogen in intensive oyster-growing areas. This output of sulfurs seems to cause the oyster filtration some damage (Ito et...
Tipo: Text
Palavras-chave: Marennes Oleron; Sediment; Oysters; Physiology; Filtration; Biodeposits; Crassostrea gigas; Marennes Oléron; Sédiment; Huître; Physilogie; Filtration; Biodépôts; Crassostrea gigas.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-2955.pdf

Etude bibliographique de quelques espèces planctoniques et benthiques littorales de la Manche - Volume 1 - Espèces phytoplanctoniques
Provedor de dados: 5
Autores: Erard-le Denn, Evelyne; Populus, Jacques.
This catalogue deals mainly with common phytoplanktonic species found in the Channel. It is part of a bibliographical survey on pelagos and benthos. The main idea was to gather the largest possible amount of data on the eco-physiology of each species. To do so, studies were conducted in the main marine region where the species had been found and analysed. We focused on several reference ecological studies conducted in the coastal Channel, on the E.D.F. sites, by the C.N.E.X.O., the I.S.T.P.M. and some university laboratories. A great attention was also paid to the studies on seasonal cycles carried out in laboratories in Plymouth, Helgoland and in the Irish zones. (unverified OCR)
Tipo: Text
Palavras-chave: Physiology; Ecology; Bentic; Coastal species; English Channel sea; Phytoplanktonic species; Physiologie; Ecologie; Benthiques; Espèces littorales; Manche; Espèces phytoplanctoniques.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/rapport-3701.pdf

Responses of enteric bacteria to environmental stresses in seawater
Provedor de dados: 5
Autores: Troussellier, Marc; Bonnefont, Jean-luc; Courties, Claude; Derrien, Annick; Dupray, Elizabeth; Gauthier, Michel; Gourmelon, Michele; Joux, Fabien; Lebaron, Philippe; Martin, Yvan; Pommepuy, Monique.
The effects of different environmental factors (nutrient deprivation, hyperosmotic shock, exposure to light) on enteric bacteria which have been transferred into the marine environment, have been studied experimentally (microcosms) by considering demographic, physiological and genetic responses in Escherichia coli or Salmonella typhimurium populations. Short-term experiments (less than or equal to 48 h) showed that nutrient deprivation induced limited changes in measured bacteriological variables, but when combined with hyperosmotic shock, it results in an energy charge decrease and inactivation of membrane transport. Light exposure mainly affects the colony-forming capacity of bacterial populations. Combining different stress factors confirmed the rapid...
Tipo: Text
Palavras-chave: Genetics; Cellular states; Physiology; Seawater; Enteric bacteria; Génétique; Etats cellulaires; Physiologie; Eau de mer; Entérobactéries.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/publication-845.pdf

Relationships between growth, survival, physiology and behaviour — A multi-criteria approach to Haliotis tuberculata phenotypic traits
Provedor de dados: 5
Autores: Lachambre, Sebastien; Huchette, Sylvain; Day, Rob; Boudry, Pierre; Rio-cabello, Antoine; Fustec, Timothee; Roussel, Sabine.
Abalone growth rate is often identified among important traits to improve through selective breeding. However, the rapid success of some selective breeding plans has sometimes led to negative effects in some aquaculture species due to trade-offs. One of them is the loss of homeostasis of selected animals which results in the inability to resist the stress experienced during the rearing process. In this context, this study aimed to analyze the phenotypic relationships between growth, and physiological and behavioural traits in Haliotis tuberculata under stressful conditions. Eleven traits related to growth, immunity, reproduction and behaviour were recorded under laboratory conditions. A total of 120 adults from wild or farm origin were first monitored...
Tipo: Text
Palavras-chave: Haliotis tuberculata; Growth; Behaviour; Physiology; Multivariate analysis; Phenotyping.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00333/44434/44101.pdf

Contribution a l'etude de l'atresie ovocytaire chez Serranus cabrilla en captivite.
Provedor de dados: 5
Autores: Febvre, Michèle.
The oocyte atresia are studied in captive Serranus cabrilla Linne, and compared to the atresia which occur during corresponding cycle periods. Whereas physiological atresia are difficult to reveal, atresia in captivity depend on the capture period, laboratory conditions and on the duration of the experiment. The oocyte modifications are described and discussed.
Tipo: Text
Palavras-chave: Serranus cabrilla; Ovaries; Reproduction; Captivity; Diseases; Physiology.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2024.pdf

Métabolisme de l'huître Crassostrea gigas stockée dans des dégorgeoirs conchylicoles, à différentes densités et saisons
Provedor de dados: 5
Autores: Bougrier, Serge; Masson, Daniel; Geairon, Philippe; Fouche, Dominique; Leroy, Anne; Faury, Nicole; Ratiskol, Jacqueline.
One of the problems faced by oyster farmers in France is the immediate or delayed mortality of oysters in the storage tanks prior to shipping. This may be due to overstocking and/or improper water management. To investigate the problem, experiments were performed in commercial storage tanks stocked with oysters at different densities. The aim of this study was to provide some basic experimental data and guidelines for better handling of oysters prior to shipping
Tipo: Text
Palavras-chave: Physiology; Oyster farmers; Crassostrea gigas; Oysters; Storage tanks; Physiologie; Ostréiculture; Dégorgeoirs; Crassostrea gigas; Huîtres; Bassin stockage.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-3047.pdf

Etude et modélisation des mécanismes impliqués dans la croissance de l'huître perlière, Pinctada margaritifera, au sein de l'écosystème conchylicole du lagon de l'atoll de Takapoto (Polynésie Française)
Provedor de dados: 5
Autores: Pouvreau, Stephane.
L'huître perlière, Pinctada margaritifera (Linné, 1758) var. cumingi (Reeve), productrice de perles noires, fait l' objet d'une aquaculture florissante en Polynésie Française. Afin de pérenniser cette activité, un programme de recherche (le PGRN) a été lancé, en 1990, sur l' atoll de Takapoto. L' un des thèmes de ce programme réside dans l'étude de la capacité trophique d'un lagon soumis à une activité de perliculture. A cet égard, un modèle déterministe expliquant la croissance et la reproduction de P. margaritifera à partir des paramètres du milieu (notamment la nourriture disponible) a été mis au point. La construction de ce modèle a impliqué : ( 1) l'analyse de l'hydrobiologie du lagon; (2) l'étude de la physiologie de P. margaritifera; (3) le sui vi...
Tipo: Text
Palavras-chave: Bivalves; Huîtres perlières; Pinctada margaritifera; Physiologie; Croissance; Reproduction; Hydrobiologie; Atoll; Lagon; Écosystème; Réseau trophique; Modélisation; Capacité trophique; Polynésie française; Bivalves; Pearl oyster; Pinctada ma rgaritifera; Physiology; Growth; Reproduction; Hydrobiology; Atoll; Lagoon; Ecosystem; Trophic web; Modelling; Carrying capacity; French Polynesia.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00034/14558/11856.pdf

Analyse genetique et physiologique des interactions hote-parasite: le systeme prosorhynchus squamatus - Mytilus
Provedor de dados: 5
Autores: Coustau, Christine.
Tipo: Text
Palavras-chave: Mytilidae; Prosorhynchus squatamus; Host oreferences; Population genetics; Physiology; Parasitic diseases; Mytilus.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/these-1571.pdf

Mesure de la retention de Skeletonema costatum par Ruditapes philippinarum (Mollusque, Bivalve) en fonction de la longueur des colonies algales: Principes methodologiques
Provedor de dados: 5
Autores: Sauriau, P; Baud, Jean-pierre.
Based on Coulter Counter data, a new method is proposed to study the influence of the polymorphous variability in size as well as in shape of the diatom species Skeletonema costatum on the physiological performances of the Manila clam Ruditapes philippinarum . Three conditions are required in order to convert volumetric data determined with the Coulter Counter into metric data, i.e. (1) stability of the pervalvar diameter of the diatom chains, (2) statistical independence between length and pervalvar diameter of the diatom chains, and (3) negligible level of coincident passages through the aperture orifice. Under these three conditions, the mean length (l) of a S. costatum chain can be related to the mean pervalvar diameter (d) of diatom chains and to the...
Tipo: Text
Palavras-chave: Bivalvia; Skeletonema costatum; Bacillariophyceae; Algae; Physiology; Biopolymorphism; Counters; Size; Size distribution; Feeding; Nutrition.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-1670.pdf

Energy balance of Litopenaeus vannamei postlarvae fed on animal or vegetable protein based compounded feeds
Provedor de dados: 5
Autores: Jimenez Yan, L; Brito, A; Cuzon, Gerard; Gaxiola, G; Garcia, T; Taboada, G; Soto, L; Brito, R.
L. vannamei postlarvae are normally raised with a protein dense diet (50% protein) rich in fishmeal. Part of the protein is utilized for energy purpose instead of protein synthesis. Based on a previous energy partitioning study, the effects of two isoenergetic compounded feed treatments - animal protein (AP) and vegetable protein and carbohydrates (VPC) - upon growth efficiency and energy budget of shrimp postlarvae and early juveniles were determined. Recovered energy (RE) or production (P) after 50 days trial was similar (2 J day(-1)) in both treatments, from PL14 to PL19. However, early juveniles discriminated between animal protein (116 J day(-1)) and vegetable protein and carbohydrates (88 J day(-1)). The difference in respiration indicated a higher...
Tipo: Text
Palavras-chave: Shrimp; Physiology; Vegetable protein; Animal protein; Energy; Juvenile; Postlarvae.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1879.pdf

Maintenance of discrete bacterial populations in adjacent marine habitats.
Provedor de dados: 5
Autores: Robb, F; Muir, D; Davis, C.
Some mechanisms of selection which operate on marine Vibrio and Pseudomonas strains during survival in dilute environments have been examined. Mannitol uptake and utilisation systems are more efficient in the Vibrio strain compared with the Pseudomonas strain during starvation survival. A Vibrio mutant strain lacking mannitol uptake showed no greater loss of viability during starvation survival than mannitol positive strains. The Vibrio strain appears to be constitutive with respect to mannitol uptake systems, whereas the Pseudomonas strain examined is inducible. Active uptake systems for glucose, glutamate, alanine and aspartic acid were efficiently maintained during starvation survival in the Vibrio strain. Results suggest that membrane uptake systems...
Tipo: Text
Palavras-chave: Pseudomonas; Vibrio; Bacteria; Physiology; Alcohols; Food conversion; Survival; Starvation; Metabolism.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-960.pdf

Effects of copper on the dinoflagellate Alexandrium minutum and its allelochemical potency
Provedor de dados: 5
Autores: Long, Marc; Holland, Aleicia; Planquette, Helene; Gonzalez Santana, David; Whitby, Hannah; Soudant, Philippe; Sarthou, Geraldine; Hégaret, Helene; Jolley, Dianne F.
The dinoflagellate Alexandrium minutum produces toxic compounds, including paralytic shellfish toxins, but also some unknown extracellular toxins. Although copper (Cu) is an essential element, it can impair microalgal physiology and increase their toxic potency. This study investigated the effect of different concentrations of dissolved Cu (7 nM, 79 nM and 164 nM) on A. minutum allelochemical potency, here defined as negative effects of a protist on competing protists through the release of chemicals. This was studied in relation to its physiology. The effects of Cu were assessed on A. minutum growth, reactive oxygen species level, photosynthesis proxies, lipid metabolism, exudation of dissolved organic compounds, allelochemical potency and on the...
Tipo: Text
Palavras-chave: Alexandrium; Copper; Toxicity; Allelopathy; Physiology; Exudate.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59612/62629.pdf

Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle
Provedor de dados: 5
Autores: Delaporte, Maryse; Moal, Jeanne; Soudant, Philippe; Lambert, Christophe; Pouvreau, Stephane; Enriquez, Martha; Degremont, Lionel; Soletchnik, Patrick; Gagnaire, Beatrice; Ropert, Michel.
In the frame of MOREST project, a common biological material, resulting of a mixture of different families produced in experimental hatchery, was reared in two different environmental fields : Normandy and Charente. Concomitantly, a pool was conditioned at the Ifremer Argenton hatchery with three different algae levels : 4%, 8% and 12% of algal dry weight per oyster dry weight. During the experiments, five immune parameters were studied in parallel with survival rate and reproductive status (stages and intensity). Site location, seasonal variations and experimental diet level clearly influenced oyster immune parameters. Haemocyte counts were higher for oysters reared in Normandy than those reared in Charente and in hatchery. Granulocyte percentage was...
Tipo: Text
Palavras-chave: Defense mechanisms; Nutrition; Seasonal variations; Physiology; Crassostrea gigas; Pacific oysters.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-3500.pdf

Estimation of physical and physiological performances of blacklip pearl oyster larvae in view of DEB modeling and recruitment assessment
Provedor de dados: 5
Autores: Sangare, Nathanael; Lo-yat, Alain; Le Moullac, Gilles; Pecquerie, Laure; Thomas, Yoann; Beliaeff, Benoit; Andrefouet, Serge.
In French Polynesia black pearl farming represents one of the dominant business sectors. However, it still entirely relies on unpredictable Pinctada margaritifera spat collection success, which is itself conditioned by larval development completion. To assess the relationship between larval development and recruitment success, we studied under controlled conditions the effect of food concentration on development, growth, ingestion rate, survival and metabolic rate at the larval stage. Larvae were exposed to four different phytoplankton densities (2,5; 7,5; 15 and 30 cell.μL−1). Larvae survived equally all over the range of phytoplankton concentration with an average survival rate of 16% at the end of experiments. Food concentration significantly affected...
Tipo: Text
Palavras-chave: Bivalve larvae; Pinctada margaritifera; Physiology; Energetics; Dynamic energy budget theory; Pearl farming; Aquaculture.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00476/58795/61446.pdf

Impact of environmental variability on Pinctada margaritifera life-history traits: A full life cycle deb modeling approach
Provedor de dados: 5
Autores: Sangare, Nathanael; Lo-yat, Alain; Le Moullac, Gilles; Pecquerie, Laure; Thomas, Yoann; Lefebvre, Sebastien; Le Gendre, Romain; Beliaeff, Benoit; Andréfouët, Serge.
The black-lipped pearl oyster (Pinctada margaritifera) is extensively farmed in French Polynesia to produce black pearls. For a sustainable management of marine resources, studying interactions between organisms and environment, and the associated factors and processes that will impact their life cycle and thus modulate population dynamics is a major research priority. Here, we describe black-lipped pearl oyster energy acquisition and use, and its control by temperature and food concentration within the Dynamic Energy Budget (DEB) theory framework. The model parametrization was based on literature data and a specific laboratory experiment. Model validation was carried out thanks to historical in-situ datasets and a dedicated field survey. Three theoretical...
Tipo: Text
Palavras-chave: Bivalve; Physiology; Bioenergetics; Dynamic energy budget theory; Environmental change; Pearl farming.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00613/72469/71614.pdf

Évaluation des potentialités de l'IRM pour la recherche sur la Physiologie des Bivalves Premiers résultats anatomiques et perspectives
Provedor de dados: 5
Autores: Pouvreau, Stephane; Davenel, A; Quellec, S; Rambeau, M.
Nuclear Magnetic Resonance (NMR) is increasingly used in biology and the appearance of imaging and structural and/or metabolic spectroscopy (MRI/MSR) platforms (Rennes, Strasbourg, Marseille...) devoted to this small animal shows the recent keen interest in these research techniques. However, to this day and to our knowledge, no approach of this style has been developed for sea molluscs and even less so for the cup oyster, Crassostrea gigas. Because of its economic importance, this bivalve mollusc is the subject of much research in physiology, to the point of becoming, at IFREMER, a biological model for marine invertebrates. Nonetheless, most of the methodologies developed for studying it are destructive, which (1) prevents individual follow-up, (2)...
Tipo: Text
Palavras-chave: Nuclear Magnetic Resonance; Anatomy; Biometry; Physiology; Bivalvia.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/rapport-1560.pdf

Biological, physiological, immunological and nutritional assessment of farm-reared Litopenaeus stylirostris shrimp affected or unaffected by vibriosis
Provedor de dados: 5
Autores: Mugnier, Chantal; Justou, Carole; Lemonnier, Hugues; Patrois, Jacques; Ansquer, Dominique; Goarant, Cyrille; Le Coz, Jean-rene.
Shrimp aquaculture in New Caledonia is subject to seasonal mortalities during grow-out due to highly virulent Vibrio nigripulchritudo (Vn). To understand the mechanisms affecting shrimp resistance and leading to significant mortality, a shrimp ecophysiology and immunology survey was conducted on two farms, the first considered as a "control" farm (HC), the second affected by the disease (DF). Mortality observed during the survey at DF started 50 days after stocking and was typical of this disease. The main observations regarding shrimp were: (a) growth was not affected by the disease and was faster in the DF than in the HC pond; (b) disease did not affect one sex more than the other, or a specific part of the population in terms of weight; (c) the physical...
Tipo: Text
Palavras-chave: Vibriosis; Penaeid shrimp; Field survey; Physiology; Immunology; Nutritional status.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00176/28764/27567.pdf

Evolution des acides nucleiques au cours du developpement larvaire de la crevette rose Palaemon serratus (Pennant).
Provedor de dados: 5
Autores: Campillo, Albert; Regnault, M.; Luquet, P.
The evolution of nucleic acids in larvae of P. serratus reared in the laboratory from hatching to metamorphosis has been studied. From the 1st larval stage to the post-larval stage, DNA and RNA concn decrease: from 185 to 95 uMoles-bases/g PSD for DNA and from 133.5 to 78.75 uMoles-bases for RNA. The concn decrease is not regular; it is emphasized between stages 4 and 5 on the one hand, and between stage 7 and the post-larva on the other hand. The amount of DNA and RNA per larva increases proportionally to the wet weight from stage 1 to the post-larva. As the weight is multiplied by 7.6, total DNA and total RNA are multiplied by 3.80 and 4.25 respectively. The RNA/DNA ratio has a mean value of 0.77; it increases slightly from stage 1 (0.72) to the...
Tipo: Text
Palavras-chave: Calliphora; Crangon crangon; Palaemon serratus; Nucleic acids; Larval development; Invertebrate larvae; Biochemistry; Physiology.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2023.pdf

Activité respiratoire en continu de l'huître Crassostrea gigas : mise au point d'une nouvelle méthodologie
Provedor de dados: 5
Autores: Bougrier, Serge; Geairon, Philippe.
A continuous monitoring system to measure the respiration of Crassostrea gigas has been developped. The metabolic function estimated by oxygen consumption has been monitored during periods of 24 h, without food, at a temperature constant of 15°C. Preliminary results showed that the mean percentage of oyster activities was 50 % with a high variability from 0 to 100 %. The number of activity periods per day (24 h) is function of the oysters with variation between 0 and 7.
Tipo: Text
Palavras-chave: Physiology; Respiration; Crassostrea gigas; Oysters; Physiologie; Respiration; Crassostrea gigas; Huîtres.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-3046.pdf

Bilan énergétique chez les mollusques bivalves : terminologie et méthodologie - Compte rendu du groupe de travail réuni au laboratoire national "Ecosystème conchylicole" de l'IFREMER La Tremblade (13 et 14 septembre 1984)
Provedor de dados: 5
Autores: Heral, Maurice; Lucas, Albert; Deslous Paoli, Jean-marc; Goulletquer, Philippe; Masse, Henri; LABEIM (Laboratoire de Biologie et d'Ecologie des Invertébrés Marins).
En septembre 1984, MM. HERAL et DESLOUS-PAOLI organisèrent à La Tremblade, une "réunion méthodologie expérimentale mollusques". Cette rencontre faisait suite à un bref état qui s'était engagé au Congrès de Montpellier sur les "Bases biologiques de l'Aquaculture", où il était apparu que la terminologie et la méthodologie concernant le métabolisme des bivalves devaient être clarifiées. Grâce à une large information auprès des spécialistes français de la physiologie des bivalves, la réunion à La Tremblade a réuni un grand nombre de participants très motivés. Pendant 2 jours des discussions très animées ont permis de bien comprendre les échanges entre les bivalves et leur environnement et d'y jeter un regard neuf, ce qui impliquait une analyse critique du...
Tipo: Text
Palavras-chave: Terminologie; Méthodologie; Bilan d'énergie; Physiologie; Bivalve; Terminology; Methodology; Energy budget; Physiology; Bivalve molluscs.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00014/12562/9432.pdf

Mise en place d'un plan de sélection génétique pour l'ormeau européen Haliotis tuberculata
Provedor de dados: 5
Autores: Lachambre, Sébastien.
In the context of an increasing demand and a declining supply from fisheries, worldwide aquaculture production of abalone has greatly increased in the last decades. Selective breeding has been initiated to improve growth in major abalone species. In France, the abalone production was initiated 30 years ago and struggles to develop. This CIFRE PhD co-financed by France Haliotis, the only French hatchery in activity, was initiated to study early domestication process of farmed abalone population and to provide knowledge required to design a selective breeding program adapted to this company. Wild and farmed populations were compared, showing that, until 2013, farmed and wild abalone presented similar performances. However, lower physiological and behavioural...
Tipo: Text
Palavras-chave: Sélection génétique; Ormeaux; Croissance; Physiologie; Comportement; Selective Breeding; Abalone; Growth; Physiology; Behaviour.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00441/55231/56711.pdf

Environnement et jeunes stades de vie chez le poisson : la plasticité développementale comme réponse aux contraintes hypoxiques et thermiques
Provedor de dados: 5
Autores: Cadiz Barrera, Laura.
In the context of global change, decrease in oxygen availability (hypoxia) combined with rising water temperature are especially prevalent in coastal regions, towards which marine fish larvae may drift at the end of their development. It is well admitted that the physiological regulations implemented by organisms to cope with their environment during the early life stages of life can cause profound consequences in their subsequent life-history trajectory (developmental plasticity). Therefore, the main objective of this thesis was to investigate whether ecologically relevant conditions of oxygenation (40% and 100% air saturation) combined with thermic conditions (15 and 20 °C), occurring at the last stages of larval development of European sea bass...
Tipo: Text
Palavras-chave: Hypoxie; Réchauffement des océans; Physiologie; Bar Européen; Plasticité développementale; Hypoxia; Ocean warming; Physiology; European sea bass; Developmental plasticity.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00498/60973/64384.pdf

Rapport de mission aux Etats-Unis du 4 au 22 janvier 1988
Provedor de dados: 5
Autores: Fauvel, Christian.
During this visit, research work on the physiology and zootechny of reproduction of different US teams were compared to ours. It is clear that we have the same problems to solve and that  research programs are rather similar, but they must take into account the local conditions. This fact limits the possibilities of cooperation. Nevertheless a very good knowledge of each work has been noted.
Tipo: Text
Palavras-chave: Reproduction; Physiologie; Crustacés; Maturation; Zootechnie; Reproduction; Maturation; Physiology; Zootechny.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00374/48516/48789.pdf

Constraints and Priorities for Conducting Experimental Exposures of Marine Organisms to Microplastics
Provedor de dados: 5
Autores: Paul-pont, Ika; Tallec, Kevin; Gonzalez-fernandez, Carmen; Lambert, Christophe; Vincent, Dorothee; Mazurais, David; Zambonino-infante, Jose-luis; Brotons, Guillaume; Lagarde, Fabienne; Fabioux, Caroline; Soudant, Philippe; Huvet, Arnaud.
Marine plastic pollution is a major environmental issue. Given their ubiquitous nature and small dimensions, ingestion of microplastic (MP) and nanoplastic (NP) particles and their subsequent impact on marine life are a growing concern worldwide. Transfers along the trophic chain, including possible translocation, for which the hazards are less understood, are also a major preoccupation. Effects of MP ingestion have been studied on animals through laboratory exposure, showing impacts on feeding activity, reserve depletion and inflammatory responses, with consequences for fitness, notably reproduction. However, most experimental studies have used doses of manufactured virgin microspheres that may not be environmentally realistic. As for most...
Tipo: Text
Palavras-chave: Microplastics; Nanoplastics; Experimental exposure; Impacts; Marine organisms; Physiology.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00449/56088/57621.pdf

Response of Mytilus edulis to enhanced phytoplankton availability by controlled upwelling in an oligotrophic fjord
Provedor de dados: 5
Autores: Strohmeier, Tore; Strand, Oivind; Alunno-bruscia, Marianne; Duinker, Arne; Rosland, Rune; Aure, Jan; Erga, Svein R.; Naustvoll, Lars J.; Jansen, Henrice M.; Cranford, Peter J.
The controlled upwelling of nutrient-rich deep water in oligotrophic coastal regions has been proposed as a means of increasing phytoplankton and, subsequently, bivalve aquaculture production. This was tested as part of a large-scale upwelling experiment in an oligotrophic environment (Lysefjord, Norway). The mean chlorophyll a concentration in the upwelling area was consistently higher than at the control site (mean ± SD: 3.3 ± 1.9 and 1.5 ± 0.6 mg Chl a m-3, respectively) during the 4 mo of controlled upwelling. After 2 mo with upwelling, the dry flesh weight of 1 yr-old and 2 yr-old mussels was 95% and 24% higher, respectively, than that of the mussels at the control site. The 1 yr-old mussels at the upwelling site achieved up to 2.4-fold higher dry...
Tipo: Text
Palavras-chave: Bivalve aquaculture; Production carrying capacity; Physiology; Fjord ecosystems; Shell growth; Tissue growth.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00241/35200/33704.pdf

Shore-level size gradients and thermal refuge use in the predatory sea star Pisaster ochraceus: the role of environmental stressors
Provedor de dados: 5
Autores: Monaco, Cristian; Wethey, David S.; Gulledge, Shadow; Helmuth, Brian.
The body size of a mobile intertidal invertebrate can determine its access to different microhabitats, and thus alter its exposure to environmental stressors. We surveyed a rocky intertidal keystone predator, the sea star Pisaster ochraceus, and characterized size-dependent distribution, defined by individuals' shore level and refuge use. At 2 field sites (in California and Oregon, USA) we examined temporal and geographical variability in habitat selection. We evaluated the hypothesis that environmental drivers measured on-site and body temperatures measured using biomimetic sensors (i.e. 'robo-sea stars'), explained the observed distribution patterns, including shore-level size gradients, with larger animals lower on the shore. We tested the effect of...
Tipo: Text
Palavras-chave: Ecology; Physiology; Rocky intertidal; Environmental stress; Climate change; Temperature; Desiccation; Solar radiation; Body size; Behavior.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00605/71695/70137.pdf

Haematological and physiological characteristics of diploid and triploid sea bass, Dicentrarchus labrax L.
Provedor de dados: 5
Autores: Peruzzi, Stefano; Varsamos, Stamatis; Chatain, Beatrice; Fauvel, Christian; Menu, Bruno; Falguiere, Jean-claude; Severe, Armelle; Flik, Gert.
The purpose of this study was to determine whether diploid and triploid sea bass differed in terms of main haematological and physiological characteristics. Diploid and triploid fish were produced by sub-optimal pressure treatments and held in communal environments under standard rearing conditions. Total red blood cell count (RBCC), haemoglobin concentration (Hb), hematocrit (Hct), mean cell volume (MCV), mean cellular haemoglobin content (MCH), mean cell haemoglobin concentration (MCHC), plasma metabolites, osmotic pressure, gill Na+/K+-ATPase activity, electrolytes, cortisol, and 3,5,3'-triiodo-L-thyronine (T-3) were measured and compared. Triploidisation in sea bass led to an increase in erythrocyte size (32% in cytoplasm surface area, and 50% in...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Sea bass; Triploid; Diploid; Physiology; Haematology.
Ano: 2005
URL: https://archimer.ifremer.fr/doc/2005/publication-508.pdf

Evolution de la biomasse et de la physiologie du zooplancton sur la côte nord de Bretagne en relation avec l'échouage de l'Amoco Cadiz : résultats préliminaires pour la période du 16 mars au 20 mai 1978
Provedor de dados: 5
Autores: Samain, Jean-francois; Le Fevre, J.; Moal, J.; Daniel, J.y.; Boucher, Jean.
First results about distribution and changes of biomass (dry weight and total soluble proteins), physiology (amylase, trypsin) and faunistic composition of zooplankton are reported for the two months period following the spill of AMOCO CADIZ on the Britany Northern coast. A shortage of biomass in the aber area is attributed to hydrocarbons. The low level of the mean value of biomasse on the North coasts, and the pecularities of estuarine station of the Lannion bay and of Trieux area are reported and discussed.
Tipo: Text
Palavras-chave: Amoco Cadiz; Zooplancton; Biomasse; Physiologie; Marée noire; Amoco Cadiz; Zooplankton; Biomass; Physiology; Spill.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41728/40939.pdf

Bases génétiques des caractères physiologiques impliqués dans la croissance chez l'huître creuse Crassostrea gigas (Thunberg)
Provedor de dados: 5
Autores: Collet, Bertrand.
Growth is a very important trait in the oyster Crassoslrea gigas both from an economical and scientific point of view. Many questions remain unanswerable or are still discussed . From a hatchery-based population, the constancy in time of growth performances From larval to adult stage was studied. The influence of physiological parameters (energy acquisit ion and expenditure) and parentage on growth was estimated. ln the literature, the relationship between larval growth and post-Iarval growth is debated . Our study shows that the larval growth is positively correlated with the post-Iarval growth. This result validates the hatchery practices consisting in culling the small larvae. The growth performances are stable over the time and show no compensation....
Tipo: Text
Palavras-chave: Crassostrea gigas; Croissance; Physiologie; Analyse de parenté; Microsatellite DNA; Crassostrea gigas; Growth; Physiology; Parentage analysis; Microsatellite DNA.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00108/21939/19532.pdf

Use of diatom motility features as endpoints of metolachlor toxicity
Provedor de dados: 5
Autores: Coquille, Nathalie; Jan, Gwilherm; Moreira, Aurelie; Morin, Soizic.
Many recent ecotoxicological studies suggest a relationship between freshwater contamination and increasing abundances of motile diatoms (potentially able to move). The capacity to escape would present advantages to species in polluted environments. However, actual motility as a response to toxicants had not been described and required experimental validation. We designed a specific experiment to assess how a field-isolated diatom (Gomphonema gracile) distributes energy to in situ resistance (increased population growth or photosynthesis) and escape (behavioral changes), when exposed to increasing concentrations of the herbicide metolachlor. We report here the dose-time dependent responses of G. gracile populations. They coped with low contamination by...
Tipo: Text
Palavras-chave: Diatoms; Physiology; Behavior; Pesticide exposure; Motility; CASA.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00254/36521/35081.pdf

Dynamique des populations bactériennes au cours de deux productions expérimentales de phytoplancton marin naturel
Provedor de dados: 5
Autores: Bianchi, M.a.; Martin, Y.p.
Quantitative and qualitative variations of the hetero­trophic bacterial population, during two experimental induced phytoplanktonic blooms are described. When the phytoplanktonic population deceases, the bacte­rial population exhibits a significant increase. The spring microflore is quite different from the fall ones. Microbiological, physiological and biochemical fluctuations indicate qualitative fluctuations. Bacterial strains are identified as "bacterial profiles".
Tipo: Text
Palavras-chave: Plancton; Bactéries; Dynamique; Physiologie; Structure; Plankton; Bacteria; Dynamic; Physiology; Structure.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00305/41669/40878.pdf

Early weaning of marine fish larvae onto microdiets: Constraints and perspectives
Provedor de dados: 5
Autores: Person, L.
Weaning small sized marine fish larvae at first feeding directly onto compound pellets is still difficult, while good results can be obtained when used in combination with live prey or when a prefeeding period on live prey is provided up to a size of about 2-3 mg. Microdiets are generally well ingested as their acceptability and visual detection may be improved using feeding activators and increasing good perception contrast. In theory, food may be processed to have a correct nutritional balance, selection of high digestible components is very important as larval digestive system is not fully functional during the first 2 or 3 weeks of life.
Tipo: Text
Palavras-chave: Hatching; Fatty acids; Amino acids; Nutritional requirements; Feeding behaviour; Stomach; Digestive system; Enzymes; Digestion; Physiology; Diets; Pellet feeds; Feeding; Fish larvae.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1422.pdf

Physiological responses during acute stress recovery depend on stress coping style in European sea bass, Dicentrarchus labrax.
Provedor de dados: 5
Autores: Ferrari, Sebastien; Rey, Sonia; Høglund, Erik; Øverli, Øyvind; Chatain, Beatrice; Mackenzie, Simon; Bégout, Marie-laure.
Individual stress coping style (reactive, intermediate and proactive) was determined in 3 groups of 120 pit tagged European seabass using the hypoxia avoidance test. The same three groups (no change in social composition) were then reared according to the standards recommended for this species. Then, 127 days later, individuals initially characterized as reactive, intermediate or proactive were submitted to an acute confinement stress for 30 min. Blood samples were taken to measure plasma cortisol levels 30 min (Stress30) or 150 min (Stress150) after the end of the confinement stress. Individuals were then sacrificed to sample the telencephalon in order to measure the main monoamines and their catabolites (at Stress30 only). Individuals from Stress150 were...
Tipo: Text
Palavras-chave: Fish; Behavior; Physiology; Personality; Brain; Transcriptomic.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00601/71330/69760.pdf

La Reproduction naturelle et contrôlée des bivalves cultivés en France. -Rapport de Groupe de Travail- IFREMER/Nantes/France, 14 et 15 novembre 1995
Provedor de dados: 5
Autores: Devauchelle, Nicole; Barret, Jean; Salaun, Gilles.
This report compiles 17 short and illustrated syntheses concerning the natural strategies of reproduction and the artificial control of the reproductive process for the flat oyster, Ostrea edulis, the japanese oyster, Crassostrea gigas, the mussels, Mytilus edulis and My ti/us galloprovincialis, the scallop, Pecten maximus. An additional syntheses is presented, as a comparison within molluscs, which are the main research topics at IFREMER concerning the artificial control of the reproductive processes in Marine Fish. Three main subjects are documented :  1. the ecophysiology of the natural period of reproduction in the wild,  2. the methods developed in the hatcheries for the artificial control of the reproductive periods, the gametes collection and the...
Tipo: Text
Palavras-chave: Bivalves; Stratégie de reproduction; Contrôle artificiel; Gonades; Gamètes; Coquille St Jacques; Moules; Huîtres; Nourriture; Photopériode; Température; Biologie; Physiologie; Biochimie.; Bivalves; Reproductive strategy; Artificial induction of reproduction; Gonads; Gametes; Scallop; Mussels; Oysters; Food; Light; Temperature; Biology; Physiology; Biochemistry.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00043/15441/12811.pdf

Long-term food-exposure of zebrafish to PCB mixtures mimicking some environmental situations induces ovary pathology and impairs reproduction ability
Provedor de dados: 5
Autores: Daouk, Tarek; Larcher, Thibaut; Roupsard, Francois; Lyphout, Laura; Rigaud, Cyril; Ledevin, Mireille; Loizeau, Veronique; Cousin, Xavier.
Although the use of polychlorinated biphenyls (PCBs) has been banned for several decades, they are still present in the environment and are occasionally mechanically released from sediment or transferred through the trophic chain. Field analyses have established correlations between exposure to PCBs and alterations in fish physiology including reproductive function. Experimental exposures have been mainly performed using dioxin-like PCBs or other congeners at very high concentrations. However, these studies are often difficult to relate to real-life conditions. In the present study, we performed a life-cycle exposure using zebrafish model and mixtures representative of some environmental situations in terms of doses, composition and containing mainly non...
Tipo: Text
Palavras-chave: Zebrafish; PCBs; Chronic exposure; Physiology; Reproduction; Atresia.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00059/17038/14608.pdf

Biomass distribution and physiological capabilities of bacteria in the water column above a sea grass system.
Provedor de dados: 5
Autores: Velimirov, B; Herndl, G; Kavka, G.
The distribution pattern of bacteria in the water column above and within a Posidonia oceanica bed near Ischia (off the Gulf of Naples) was investigated and correlated with DOC and POM data for autumn and winter. Data from samples of 5 stations along a transect from shallow to deep showed rather low bacterial densities (10 super(4).ml super(-1)) for both seasons. The number of attached bacteria was higher in late winter as compared to autumn when the leaves are shed from the stands. Except for occasional peaks DOC ranged between 1.5 and 4.5 mg C/1 while POM concentrations ranged form 4 to 14 mg AFDW.1 super(-1). Hydrolytic capabilities of isolated bacterial colonies showed that more carbohydrate substrates could be fermented in winter as compared to...
Tipo: Text
Palavras-chave: Posidonia oceanica; Microorganisms; Physiology; Seasonal distribution; Algae; Bacteria; Particulate organic matter; Metabolism; Water column; Fermentation; Sea grass.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-954.pdf

Effect of the density of the culture and the depth on the seasonal variation of the biochemical composition of Crassostrea virginica in patuxent river (Chesapeake Bay)
Provedor de dados: 5
Autores: Prou, Jean; Heral, Maurice; Goulletquer, Philippe; Forget, Maïté; Bougrier, Serge; Razet, Daniel.
The project of cultivation of oyster has been designed to evaluate the growth rate, the mortality, the reproductive effort, production and biochemical composition of the oyster function of the density and the depth. This plan was intended: - to build model of growth rate, - to demonstrate the action of the different parameters on growth rate (temperature, food effect...), - to evaluate the density effect to see if the available food could be a limiting factor, - to estimate the effect of the depth joined to the impact of the high turbidity near the bot tom, - to detect the mortality related to the prevalence of diseases.   The project began in July 1989 by dredging 20 000 small oysters at the mouth of the Patuxent River near Cove Point. Three experimental...
Tipo: Text
Palavras-chave: Physiology; Seasonal variation; Biochemical composition; Density; Crassostrea virginica; Cheseapeake Bay.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00200/31104/29503.pdf

Do transparent exopolymeric particles (TEP) affect the toxicity of nanoplastics on Chaetoceros neogracile?
Provedor de dados: 5
Autores: González-fernández, Carmen; Toullec, Jordan; Lambert, Christophe; Le Goïc, Nelly; Seoane, Marta; Moriceau, Brivaela; Huvet, Arnaud; Berchel, Mathieu; Vincent, Dorothée; Courcot, Lucie; Soudant, Philippe; Paul-pont, Ika.
The potential presence of nanoplastics (NP) in aquatic environments represents a growing concern regarding their possible effects on aquatic organisms. The objective of this study was to assess the impact of polystyrene (PS) amino-modified particles (50  nm PSNH2) on the cellular and metabolic responses of the diatom Chaetoceros neogracile cultures at two essential phases of the growth cycle, i.e. exponential (division) and stationary (storage) phases. Both cultures were exposed for 4 days to low (0.05 μg mL−1) and high (5 μg mL−1) concentrations of PS-NH2. Exposure to NP impaired more drastically the major cellular and physiological parameters during exponential phase than during the stationary phase. Only an increase in ROS production was observed at...
Tipo: Text
Palavras-chave: Nanoplastics; Diatoms; Physiology; Transparent exopolymer particles.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00491/60235/63627.pdf

Variations metaboliques des communautes bacteriennes lors d'une pollution par petrole brut, avec ou sans traitement
Provedor de dados: 5
Autores: Cauchi, B.
Metabolic potentialities of bacterial communities in marine water after Crude Oil pollution (Arabian Light) and in marine water after pollution and treatment (enrichment: Inipol EAP 22) have been studied and compared. With data analysis: regressions, hierarchical ascending classification and multifactor correspondence analysis, the treatment gives rise to conservation and one increase of enzymatic pool (second day) of the bacterial sample as a combined metabolic homogeneity contrary to pollution impact. The direct assimilation of hydrocarbons looks more regular and slow without treatment.
Tipo: Text
Palavras-chave: Bacteria; Data processing; Pollution effects; Crude oil; Marine pollution; Physiology; Metabolism; Microbiology.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1023.pdf

Feeding and digestion with bivalves
Provedor de dados: 5
Autores: Deslous-paoli, Jean-marc.
On the contrary to the U. S. where they represent but 4.6% of the total marine production , mollusc, principally bivalves, can no longer be considered as a marginal production. In France, 100 000 ton of oysters, 98% of which is represented by Crassostrea gigas (Héral &amp; al., 1985) and 85 000 ton of mussels (Mytilus edulis, Mytilus edulis galloprovincialis) (Dardignac, 1985) are produced yeraly. Elsewhere, new rearings are being developed, such as pectinidae and Ruditapes philippinarum, on the Atlantic and Mediterranean coasts. The species presently cultured, some of which dependiing only on natural collections (Crassostrea gigas, Mytilus edulis, Mytilus galloprovincialis while others depend on hatchery production, either partially Crasssotrea gigas in...
Tipo: Text
Palavras-chave: Ruditapes decussatus; Ostrea edulis; Mytilus edulis; Crassostrea gigas; Bivalves; Physiology; Digestion; Feeding.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/acte-7476.pdf

Balneola vulgaris gen. nov., sp nov., a member of the phylum Bacteroidetes from the north-western Mediterranean Sea
Provedor de dados: 5
Autores: Urios, Laurent; Agogue, Hélène; Lesongeur, Francoise; Stackebrandt, Erko; Lebaron, Philippe.
A novel aerobic, Gram-negative bacterium, named 13IX/A01/164(T), was isolated from surface waters in the coastal north-western Mediterranean Sea. Cells were motile, straight rods, 2-5 mu m long and 0-2 mu m wide, and formed orange colonies on marine agar medium. The G+C content of the genomic DNA of strain 13IX/A01/164T was 42 mol%. Phylogenetic analysis of the 16S rRNA gene sequence placed the strain in the phylum Bacteroidetes within the family Crenotrichaceae. On the basis of 16S rRNA gene sequence comparison and physiological and biochemical characteristics, this isolate represents a novel species of a new genus, for which the name Balneola vulgaris gen. nov., sp. nov. is proposed. The type strain of Balneola vulgaris is 13IX/A01/164T (=DSM 17893T=CIP...
Tipo: Text
Palavras-chave: Mediterranean sea; Coastal waters; Microbiology; Physiology; Biochemistry; Gene sequence; Balneola vulgaris.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2126.pdf

Geometric morphometric analysis of cyclical body shape changes in color pattern variants of Cichla temensis Humboldt, 1821 (Perciformes: Cichlidae) demonstrates reproductive energy allocation
Provedor de dados: 83
Autores: Reiss,Paul; Grothues,Thomas M.
Previously recognized color and pattern variants of adult Cichla temensis in Amazon flood pulse river environments reflect the cycling of individuals through seasonal sexual maturity and spawning. Individuals also vary in shape from blocky to fusiform. To determine if shape differences are related to patterns of fat reserve deposition and utilization, and to quantify the relationship of shape with color and pattern variation and life history status, specimens in each of four previously defined grades of color and pattern variation were compared using geometric morphometric techniques. Progressive shape changes occurred between grades independent of sex and correlated to gonosomatic index (GSI). Thin plate spline deformation visualizations indicate that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fat reserves; Functional morphology; Gonadosomatic index; Hepatosomatic index; Physiology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100103

An external tag for fish: tagging effects in different fish size classes and its influence on growth performance and hematology of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae)
Provedor de dados: 83
Autores: Boaventura,Túlio P.; Gil,Viviane S. B.; Gil,Camila S. B.; Peres,Anderson M.; Luz,Ronald K.
ABSTRACT This study tested an external tag for juveniles of Lophiosilurus alexandri and measured the effects of tagging in different size classes of fishes. Experiment 1 evaluated the retention rate and influence of the tag on survival and growth of three hundred fishes divided Small, Medium and Large size classes. After 90 days of experiment the fishes had 100% survival and the tag had a higher retention rate for animals of the Large size class. Experiment 2 evaluated the tag’s influence on hematology parameters of forty-two fishes at 5, 10 and 30 days post-tagging. In this experiment both tagged and untagged animals experienced 9.4% mortality. The hematocrit was higher on the 30th day for tagged animals than for untagged animals. No difference was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catfish; Identification; Pacamã; Physiology; Repopulation; Retention.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100214

Étude Taxonomique et Écophysiologique des dinoflagellés toxiques du Golfe de Gabès: Alexandrium minutum, Prorocentrum lima, Coolia spp. &amp; Ostreopsis ovata.
Provedor de dados: 20
Autores: Abdennadher, M.
Cette thèse a pour objectif principal la caractérisation taxonomique, physiologique et écologique d’espèces de dinoflagellés associées à des alertes de toxicité dans le golfe de Gabès à savoir : Alexandrium minutum, Prorocentrum lima, Coolia monotis et Ostreopsis ovata. L’optimisation des conditions de culture des espèces de dinoflagellés et la mise en place d’une phytothèque composée d’une collection de cultures de microalgues toxiques étaient notre priorité dans cette investigation. Une analyse de la base des données REPHY a été effectuée dans le cadre de cette thèse. L’étude taxonomique moyennant la microscopie électronique en transmission et à balayage nous a permis de déceler les importantes caractéristiques morphologiques de distinction pour chaque...
Tipo: Theses and Dissertations
Palavras-chave: Physiology; Taxonomy; Ecology; Phytoplankton culture.
Ano: 2014
URL: http://hdl.handle.net/1834/5924

Efecto del Flujo y el Seston sobre la Fisiología Energética del Callo de Hacha Atrina Maura (Sowerby 1835) y del Mejillón de Laguna Mytella Strigata (Hanley 1843)
Provedor de dados: 20
Autores: Galíndez, D.K.
Se examinó el efecto del flujo y seston sobre el callo de hacha Atrina maura y el mejillón de laguna Mytella strigata, bajo diferentes rangos de flujo y de exposición al flujo. En el primer experimento se usaron tres flujos (3.1, 7.3 y 12.1 cm/s) y en un tanque de circuito abierto durante 25 días, con agua proveniente de un estanque de cultivo de camarón y alta concentración de seston. Los mayores incrementos de las dimensiones de la concha, masas de tejidos e índice de condición de A. maura se obtuvieron a 7.3 y 12.1 cm/s, mientras que en M. strigata fueron a 3.1 cm/s. Los máximos contenidos de lípidos y acilgliceroles de A. maura en los tejidos se obtuvieron a los mayores flujos, mientras que en M. strigata, los máximos contenidos de lípidos y...
Tipo: Theses and Dissertations
Palavras-chave: Physiology; Shellfish; Animal growth; Feeding experiments; Shellfish; Physiology; Http://aims.fao.org/aos/agrovoc/c_7033; Http://aims.fao.org/aos/agrovoc/c_49881.
Ano: 2010
URL: http://hdl.handle.net/1834/3658

The Anatomy of the Pigeonpea
Provedor de dados: 30
Autores: S.S.
Palavras-chave: Heterocyclic compounds; Root nodulation; Seed treatment; Fruits; Starch; Physiology; Layering; Land management; Methods; Developmental stages.
Ano: 1981
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3988

DIRECTORY OF SORGHUM AND MILLETS RESEARCH WORKERS
Provedor de dados: 30
Palavras-chave: Breeds (animals); Intercropping; Agronomy; Sorghum; Soil sciences; Millets; Land resources; Agroclimatology; Genetics; Physiology.
Ano: 1982
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3998

Effect of substrate, color and size on germination and vigor of Melanoxylon brauna seeds
Provedor de dados: 190
Autores: Flores, Andressa Vasconcelos; Borges, Eduardo Euclydes de Lima e; Gonçalves, José Francisco de Carvalho; Guimarães, Valéria Monteze; Ataíde, Glauciana da Mata; Barros, Daniela de Pádua; Pereira, Márcio Dias.
The objective of this work was to investigate the effect of substrate, color and size on the germination and vigor of Melanoxylon brauna seeds. It was performed two essays. In the first, the seeds were classified by color (light and dark) and size (small and large). In the second essay, it was investigated the influence of substrates on sand, between sand, above paper, between paper and in paper rolls, type germitest. In both essays, the seeds were maintained in controlled conditions (light and temperature) during 10 days. The percentage of germination and germination speed index (GSI) were calculated. Furthermore, it was determined the weight of 1,000 seeds and the germination of the species was characterized by observation until the seedling formation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physiology; Viability; Propagation; Morphology Silvicultura - sementes florestais Fisiologia; Viabilidade; Propagação; Morfologia.
Ano: 2014
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/558

Growth and germination of some thermophilic fungi isolated from eucalypt wood chips
Provedor de dados: 190
Autores: Auer, Celso Garcia.
The main fungal species present in self-heated chip piles of eucalypt wood in Brazil were Aspergillusfumigatus, Chrysosporium thermophilum, Dactylomyces thermophilus, Penicillium bacillisporum, Rhizomucorpusillus and Thermoascus aurantiacus. This study determined the micelial growth and spore germination of these species at several temperatures on PDA medium ranging from 20 °C to 70 °C. Optimum growth temperatures were observed at 30 °C for A. fumigatus and P. bacillisporum; 40 °C for R. pusillus and 50 °C for D. thermophilus, C. thermophilum and T. aurantiacus. Growth was not observed at 60 °C and 70 °C. Incubation of spores on wateragar medium at 20 °C, 30 °C, 40 °C and 50 °C showed that only A. fumigatus, P. bacillisporum and R. pusillus could germinate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microorganism; Physiology; Temperature; Thermophilism Fisiologia; Microorganismos; Termofilia; Temperatura.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/140

CHLOROPHYLL FLUORESCENCE IN Brachiaria decumbens AND Brachiaria ruziziensis SUBMITTED TO HERBICIDES
Provedor de dados: 87
Autores: SILVEIRA,R.R.; SANTOS,M.V.; FERREIRA,E.A.; SANTOS,J.B.; SILVA,L.D.
ABSTRACT Different doses of herbicides can promote a differentiated physiological response in grasses of the same genus. This study has been proposed in order to evaluate physiological responses of B. ruziziensis and B. decumbens submitted to glyphosate and fluazifop-p-butyl. Treatments were distributed in a 2 x 6 factorial design with five repetitions, being two grasses: B. decumbens cv. Basilisk and B. ruziziensis with six doses of herbicides: 0.00; 0.25; 0.50; 1.00; 1.5 and 2.00 times the commercial dose recommended by manufacturers. At 7, 15, 21, and 30 days after herbicide application (DAA) chlorophyll luminous energy uptake efficiency was evaluated. Plants subjected to glyphosate at 7 days after application (DAA) showed minimum fluorescence of 270...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physiology; Fluazifop-p-butyl; Glyphosate; Electron transport rate; Urochloa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100248

Growth and gas changes of melon seedlings submitted to water salinity
Provedor de dados: 91
Autores: Sousa,Valéria F. de O.; Costa,Caciana C.; Diniz,Genilson L.; Santos,João B. dos; Bomfim,Marinês P.; Lopes,Kilson P.
ABSTRACT The melon is an outstanding fruit crop in Brazil, mainly in the Northeast region due to favorable conditions for cultivation. Water salinity affects the growth and production of several species, but there is tolerance among cultivars of the same species. The objective of this study was to evaluate the growth and gas exchange in melon seedlings subjected to water salinity. Experiment was carried out in a greenhouse belonging to the Center of Sciences and Agri-Food Technology, Federal University of Campina Grande, Pombal, PB, Brazil, from September to October 2016. The experimental design was a randomized complete block design in a 6 x 5 factorial scheme, with four replicates, for six cultivars of melon (Natal, Solares, Goldex, Iracema, Mandacaru...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo L.; Cultivars; Physiology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200090

Pupillary stress index: A new thermal comfort index for crossbred goats
Provedor de dados: 91
Autores: Lopes Neto,José P.; Marques,Jordânio I.; Furtado,Dermeval A.; Lopes,Fernanda F. de M.; Borges,Valéria P.; Araújo,Tiago G. P.
ABSTRACT Goats are homeothermic animals considered as rustic from the bioclimatic point of view, but the reduction of their productive efficiency may occur in unfavorable thermal conditions. The present study was carried out to evaluate pupil dilation as an indicator of thermal stress in Boer crossbred goats maintained under controlled environmental conditions. Six male crossbred goats of the Boer breed were distributed in a completely randomized design submitted to temperatures of 26, 29 and 33 °C. The pupillary dilation and pupillary temperature, respiratory frequency, heart rate, surface and rectal temperatures were monitored. The significant increase in physiological responses occurred in response to the increase in air temperature. An increase of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physiology; Pupillometry; Thermal stress; Physiological responses.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200866

Levels of shading and application of glyphosate and carfentrazone-ethyl in the control of Macroptilium atropurpureum
Provedor de dados: 91
Autores: Costa,Gustavo A.; Santos,Leonardo D. T.; Ferreira,Guilherme A. de P.; Cruz,Leandro R. da; Machado,Vitor D.; Rocha,Leonardo M.
ABSTRACT Variations in environmental conditions, such as the availability of light, can affect the efficacy of herbicides because they alter the biological characteristics of plants including those that are related to the plant’s sensitivity to herbicides. Therefore, the objective of the present study was to assess the influence of environments with different light availabilities, and of the application of glyphosate and carfentrazone-ethyl (separately or in combination) on the morphophysiology and control of Macroptilium atropurpureum. An experimental design of randomized blocks with five replicates was used, with treatments arranged in a split-plot design. The plots were composed of three levels of shading (full sunlight, 50% shading, and 70% shading);...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physiology; Siratro; Photosynthetic rate; Leaf area.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200819

Quantum efficiency of photosystem II and production of orange under salt stress and nitrogen fertilization
Provedor de dados: 91
Autores: Sousa,Jônatas R. M. de; Gheyi,Hans R.; Brito,Marcos E. B.; Lacerda,Claudivan F. de; Silva,Francisco V. da; Soares,Frederico A. L.
ABSTRACT This study aimed to evaluate the salt tolerance of 'Mimo do Céu' orange grafted onto three rootstocks using physiological parameters such as maximum quantum efficiency of photosystem II (PSII) and the production of fruits. It also evaluated the effectiveness of increased nitrogen (N) fertilization in reducing the effects of salt stress. Two concomitant experiments were carried out under controlled conditions, using drainage lysimeters. The Experiment I evaluated the effects of the application of five levels of saline water on three combinations of scion-rootstocks grafted with 'Mimo de Ceu' orange, in a randomized block design with three replicates in a 5 x 3 factorial scheme. The Experiment II evaluated the application of two N levels (100 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus spp.; Physiology; Salt stress.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500434

Gas exchanges and photochemical efficiency of West Indian cherry cultivated with saline water and potassium fertilization
Provedor de dados: 91
Autores: Dias,Adaan S.; Lima,Geovani S. de; Sá,Francisco V. da S.; Gheyi,Hans R.; Soares,Lauriane A. dos A.; Fernandes,Pedro D.
ABSTRACT The problem of the lack of adequate water resources for agriculture has intensified in recent years, making it necessary to use waters with relatively high concentration of salts for the irrigation of crops all over the world. The objective of this study was to evaluate the influence of potassium (K) fertilization as a salt stress attenuator on gas exchanges and photochemical efficiency of West Indian cherry. The crop was cultivated under greenhouse conditions in the municipality of Campina Grande, PB, in lysimeters filled with 250 kg of sandy loam soil. Treatments were distributed in randomized blocks, in a 2 x 4 factorial scheme, with two levels of electrical conductivity of irrigation water - ECw (0.8 and 3.8 dS m-1) and four K doses (50, 75,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malpighia emarginata; Saline stress; Physiology; Fruit crops.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900628

Salt stress and exogenous application of hydrogen peroxide on photosynthetic parameters of soursop
Provedor de dados: 91
Autores: Silva,André A. R. da; Lima,Geovani S. de; Azevedo,Carlos A. V. de; Veloso,Luana L. de S. A.; Gheyi,Hans R.; Soares,Lauriane A. dos A.
ABSTRACT This study aimed to evaluate the gas exchanges and photosynthetic pigments of soursop seedlings cv. ‘Morada Nova’ irrigated with saline waters and subjected to exogenous application of hydrogen peroxide by seed soaking and foliar spraying. The study was carried out using plastic bags under greenhouse conditions at the Center of Technology and Natural Resources of the Federal University of Campina Grande, PB, Brazil, using a eutrophic Regolithic Neosol of sandy loam texture. Treatments were arranged in a randomized block design, in 5 x 5 factorial scheme, which consisted of five levels of electrical conductivity – ECw (0.7; 1.4; 2.1; 2.8 and 3.5 dS m-1) of irrigation water and five concentrations of hydrogen peroxide - H2O2 (0, 25, 50, 75 and 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annona muricata L.; Saline waters; Physiology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400257

More than one inseminated female in colonies of the independent-founding wasp Mischocyttarus cassununga von Ihering (Hymenoptera, Vespidae)
Provedor de dados: 92
Autores: Murakami,André S. N.; Shima,Sulene N.; Desuó,Ivan C.
In the primitively eusocial wasps, especially Polistini and Mischocyttarini tribes, the physiological condition of each individual is strongly associated with its dominance status in the colonial hierarchy. As a rule, in independent-founding wasps, female wasps are all morphologically alike, and their role is apparently quite flexible even as adults. However, some studies have shown that differences in body size can exist between reproductive and non-reproductive females. Thus, the present study aimed at detecting differences between reproductive (inseminated) and non-reproductive (uninseminated) individuals based on morphological and physiological parameters. We tape-recorded the daily behavioural repertory of six colonies of Mischocyttarus cassununga for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dominance; Social hierarchy; Morphometry; Physiology; Mischocyttarini.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000400017

Evaluation of gas exchanges and production of genotypes of maçã banana type cultivated in the semi-arid region of Bahia
Provedor de dados: 94
Autores: Ramos,Alessandre Gabriel Oliveira; Donato,Sérgio Luiz Rodrigues; Arantes,Alessandro de Magalhães; Coelho Filho,Maurício Antônio; Rodrigues,Maria Geralda Vilela.
Abstract The objective of this study was to evaluate gas exchange and production of Maçã bananas type, at different times of the year and the day in semi-arid environment. Seven genotypes genotypes were used: Maçã, Caipira, BRS Tropical, BRS Princesa, YB42-03, YB42-17 and YB42-47, arranged in a completely randomized experimental design with five replicates and four useful plants per plot. For the physiological characteristics, a factorial arrangement 7x7x2 was considered (seven genotypes, seven evaluation periods, two reading times, 8:00 a.m. and 2:00 p.m.). Photosynthetic rates, carboxylation efficiency, and instantaneous water use efficiency are higher at 8:00 a.m., due to meteorological conditions, while foliar temperature and transpiration are higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp; Climate; Physiology; Hybrids.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300702

GAS EXCHANGE AND CHLOROPHYLL FLUORESCENCE OF CITRUS ROOTSTOCK VARIETIES UNDER SALT STRESS
Provedor de dados: 94
Autores: BRITO,MARCOS ERIC BARBOSA; SÁ,FRANCISCO VANIES DA SILVA; SOARES FILHO,WLATER DOS SANTOS; SILVA,LUDERLÂNDIO DE ANDRADE; FERNANDES,PEDRO DANTAS.
ABSTRACT  High salt concentration in water are common in Brazilian semirad region, being important to research alternatives for use this waters on crop, like use of tolerant genotypes to salinity. Thus, in order to evaluate the saline stress perception of citrus rootstocks varieties crop from gas exchange and fluorescence analysis, an experiment was realized in greenhouse at the Center for Science and Technology Agrifood, CCTA, of Federal University of Campina Grande, UFCG, Pombal, PB, Brazil. It was studied in a randomized block design with factorial scheme (2x4), two salinity levels (0.3 and 4.0 dSm-1) and four varieties of citrus rootstocks [1 -common Sunki mandarin (TSKC), 2 - Florida Rough lemon (LRF), 3 -Santa Cruz Rangpur lime (LCRSTC) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus spp.; Salinity; Physiology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200204

Vine-cacti pitayas: the new crops of the world
Provedor de dados: 94
Autores: Mizrahi,Yosef.
Until 1994, only scarce research existed on these plants; however the worldwide interest in this novel fruit crop is evident, as numbers of pitaya-related publications have grown rapidly, especially during the past decade .There is a big confusion about both botanical and commercial names and there is a need to clear this point. Herein, we attempt to review existing knowledge on the taxonomy, breeding and other horticultural characteristics of this unique crop. This paper comments abou taxonomy,breeding,physiology and horticultura e chatera ristics,postsharvest and uses.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pitaya; Taxonomy; Physiology; Postsharvest.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000100014

PRE-GERMINATIVE TREATMENTS IN POMEGRANATE SEEDS (Punica granatum L.):EFFECT ON PHYSIOLOGICAL QUALITY
Provedor de dados: 94
Autores: SILVA,JOSEANO GRACILIANO DA; LOPES,KILSON PINHEIRO; CAVALCANTE,JERFFESON ARAÚJO; PEREIRA,NATALI ALMEIDA EVANGELISTA; BARBOSA,ROBERTA CHAIENE ALMEIDA.
ABSTRACT  This study aimed to evaluate the efficiency of different removal methods of sarcotesta and their effects on the physiological quality of the seeds. We applied the following treatments: T1 - friction in coarse sand on a sieve; T2 and T3 - immersion in sulfuric acid (98%) for 30 minutes and washing in water, with and without a vernalization for 48 hours in a refrigerator at 4 °C, respectively; T4 and T5 - natural fermentation for 72 hours, with seeds submitted and not submitted to drying in shade for seven days; and T6 - seeds with intact sarcotesta as control. The experiment was carried out in a completely randomized design. For the analysis of the viability and vigor, we used the germination test, germination on first count, germination speed...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Pomegranate Tree; Sarcotesta; Dormancy; Physiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000702001

Storage of 'Swingle' citrumelo seeds in different maturation stages subjected to fungicide treatment
Provedor de dados: 95
Autores: Silva,Tanismare Tatiana de Almeida; Guimarães,Renato Mendes; Pinho,Édila Vilela de Resende Von; Abreu,Luciana Aparecida de Souza.
The establishment of citrus orchards with rootstocks from seed with a low physiological quality has been a recurring problem. Low quality seeds directly affect both the final stand and the time required for seedling production. The irregular maturation of fruits, seed recalcitrance, and the high incidence of fungi, make long term storage difficult, even at low temperatures. This study evaluated the storage potential and the use of fungicide treatments on 'Swingle' citrumelo seeds extracted from fruits collected at two maturation stages, green or ripe. The seeds were subjected to a thermal treatment, treated with Derosal, Thiram or Tecto+Captan fungicides, packaged in impermeable polyethylene bags and stored in a cold chamber for nine months. Every three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 'Swingle' citrumelo; Physiology; Seed health; Conservation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222011000400019

Influence of season, environment and feeding habits on the enzymatic activity of peptidase and β-glucosidase in the gastrointestinal tract of two Siluriformes fishes (Teleostei)
Provedor de dados: 103
Autores: Duarte,Silvana; Paiva,Marco A. R.; Lara,Camila C.; Bemquerer,Marcelo P.; Araújo,Francisco Gerson.
The enzymatic activities involved in the digestion of proteins and carbohydrates were compared among three organs of the digestive track of two Siluriformes fish species, and between two areas: a reservoir, and an area downriver of it. Our aim was to test the hypothesis that the digestive organs of species with varied feeding habits have different enzymatic activities, and that the enzymatic activity differs among seasons and environmental conditions. The iliophagous/herbivorous species Hypostomus auroguttatus Kner, 1854 had higher trypsin-like, chymotrypsin-like peptidase and β-glucosidase activity in the intestine when compared with the omnivorous species Pimelodus maculatus Lacepède, 1803, whereas the latter had more hepatic trypsin-like activity than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzymatic activity; Fishes; Physiology; Reservoirs; Siluriformes; Peptidases; Β-glucosidase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000300006

Digestibility, growth, blood chemistry, and enzyme activity of juvenile Oreochromis niloticus fed isocaloric diets containing animal and plant byproducts
Provedor de dados: 96
Autores: Montoya-Mejía,Magnolia; García-Ulloa,Manuel; Hernández-Llamas,Alfredo; Nolasco-Soria,Hector; Rodríguez-González,Hervey.
ABSTRACT In this work, we studied the digestibility, growth, blood chemistry, and enzyme activity of Nile tilapia (Oreochromis niloticus) juveniles (0.95±0.18 g) using different animal (fish silage meal, whey meal, bovine blood meal, and red crab meal) and plant (extruded bean, extruded chickpea meal, coconut paste, Jatropha curcas meal, and chickpea meal) dietary byproducts. Nine isocaloric diets (321.92±9.10 kcal g−1) were evaluated for 60 days. The highest digestibility of crude protein values for animal and plant sources were obtained for the whey (93.6) and extruded bean meal (90.5) diets, respectively. The final body weight was higher for the red crab and extruded chickpea meal diets, meanwhile the fish silage and red crab byproducts obtained the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative byproducts; Digestive response; Formulated diets; Growth performance; Nile tilapia; Physiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200873

Ventilatory frequency and anesthetic efficacy in silver catfish, Rhamdia quelen: a comparative approach between different essential oils
Provedor de dados: 96
Autores: Becker,Alessandra Janaína; Fogliarini,Carine de Oliveira; Souza,Carine de Freitas; Becker,Alexssandro Geferson; Mourão,Rosa Helena Veras; Silva,Lenise Vargas Flôres da; Baldisserotto,Bernardo.
ABSTRACT This study investigated the efficacy of essential oils of Lippia alba (EOLA) citral chemotype and Lippia origanoides (EOLO) and their effects on ventilatory frequency (VF) of silver catfish, Rhamdia quelen. Fish were exposed to 50-300 μL L−1 of EOLA and 25-300 μL L−1 of EOLO to determine induction times to sedation, anesthesia, and recovery. Moreover, VF was determined in fish exposed to 5 or 10 μL L−1 of EOLA and of EOLO for 8 h. The increasing concentration of essential oils proportionally decreased sedation and anesthesia induction times. The highest EOLA concentration increased VF of fish from the control group at 1 h of exposure, but VF decreased at both EOLO concentrations after 2 h. The EOLA citral chemotype and EOLO were effective...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Fish; Physiology; Rhamdia quelen.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100105

Menthol and eugenol as natural anesthetics for early juveniles of curimba
Provedor de dados: 96
Autores: Medeiros Junior,Elias Fernandes de; Uehara,Silvio Akira; Rodrigues,Evelize Cristina; Palheta,Glauber David Almeida; Melo,Nuno Filipe Alves Correia de; Freire,Lícius de Sá; Takata,Rodrigo.
ABSTRACT The objective of this study was to evaluate menthol and eugenol as anesthetics for early juveniles of curimba, Prochilodus lineatus. Juveniles of 4.0±0.5 g and a total length of 8.8±0.1 cm were exposed to the anesthetics menthol (20, 30, 40, 50, 60, 70, and 80 mg L−1) and eugenol (20, 30, 40, 50, 60, and 70 mg L−1) up to deep anesthesia. The anesthetic effects were evaluated measuring the induction time to deep anesthesia (characterized by loss of equilibrium, absence of swimming, reduction of opercular movements, and responses only to intense tactile stimuli), recovery time, time to appetite return, and mortality rate after 96 h of procedure. The concentrations between 60 to 80 mg of menthol L−1 provided the lowest time of induction. Increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Physiology; Prochilodus lineatus; Stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100107

Physiological responses of growing pigs to high ambient temperature and/or inflammatory challenges
Provedor de dados: 96
Autores: Campos,Paulo Henrique Reis Furtado; Le Floc'h,Nathalie; Noblet,Jean; Renaudeau,David.
ABSTRACT Global warming is one of the major environmental threats facing the world in the 21st century. This fact will have a significant impact on pig production due to its direct effects on welfare, health, and performance of pigs. Besides, the effects of high temperatures will presumably become more important over the next decades due to the development of pig production in developing countries mainly located in tropical and subtropical areas, where animals are often exposed to ambient temperatures above their thermal comfort zone. Furthermore, pigs reared in tropical areas are often confronted to sanitary challenges including poor hygiene conditions, lack of respect for sanitary rules, and pathogens. This results in the stimulation of the immune system...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal biometereology; Heat stress; Metabolism; Physiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600537

Effects of White Roman gosling quality on their growth parameters, intestinal villus morphology, blood biochemistry, and nonspecific pathological lesions
Provedor de dados: 96
Autores: Lin,Min Jung; Chang,Shen Chang; Lee,Min Ting; Tien,Yong Tien; Liao,Jiunn Wang; Lee,Tzu Tai.
ABSTRACT The purpose of this study was to investigate the effects of gosling quality on their growth parameters, intestinal villus morphology, blood biochemistry, and nonspecific pathological lesions from 0 to 4 weeks old. Seventy-two goslings were randomly distributed into 12 pens, with each pen containing three males and three females in a completely randomized design of two control variables, including healthy and weak goslings. Healthy goslings all shared the same characteristics, such as good features with no abnormalities and full absorption of yolk sac. Albeit lighter body weight (&lt;85 g/bird) and incomplete absorption of the yolk sac were found in the weak geese, no obvious disease was exhibited in them. Post mortem examination revealed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal production; Physiology; Poultry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100515

Mobilisation of reserves during germination of Jatropha seeds
Provedor de dados: 124
Autores: Lopes,Lineker de Sousa; Gallão,Maria Izabel; Bertini,Cândida Hermínia Campos de Magalhães.
Phanerogam species reserve nutrients in their seeds in order to sustain propagation. Their chemical composition and the way the metabolites are used vary, according to genotype, the environment and the interaction between these factors. As the jatropha is considered a strategic oilseed crop in biofuel production, the aim of this work was to quantify the major reserve components (starch, protein, soluble sugar and lipid) of the jatropha seed and its disposition in the cells during different periods of germination, in order to understand the process of reserve mobilisation and to determine the potentially right time for the extraction of vegetable oil for that species. The seeds were soaked in water for 0; 12; 24; 36; 42; 45 and 48 hours, following a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas L.; Physiology; Oilseed crop.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200021

Physiological limits and the role of plant type and varietal adaptation
Provedor de dados: 106
Autores: Palmer, A.F.E.
Palavras-chave: Corn; Maize; Physiology; Plant type; Adaptation; ข้าวโพด; สรีรวิทยา; การปรับตัว.
Ano: 1972
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3914

Physiological studies of corn and sorghum production
Provedor de dados: 106
Autores: Pismai Srisukphrasert; Teerasak Manupeerapan; Atcharee Rakla; Nipa Kaewborisutsakul.
7 tables
Palavras-chave: Corn; Maize; Sorghum; Physiology; Growth; Maturity; Spacing; Population densities; Varieties; Downy mildew; Disease resistance; Yields; Dry weight; Quality; ข้าวโพด; ข้าวฟ่าง; ระยะระหว่างแถว; ความหนาแน่นของประชากร; โรคราน้ำค้าง.
Ano: 1981
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4064

Preliminary studies of physiology in corn production
Provedor de dados: 106
Autores: Pismai Srisukphrasert; Acharee Prasarn.
5 tables
Palavras-chave: Corn; Maize; Physiology; Growth; Varieties; Downy mildew; Disease resistance; Yields; ข้าวโพด; การผลิต; สรีรวิทยา; โรคราน้ำค้าง; ระยะปลูก; ความหนาแน่นของประชากร; การเจริญเติบโต; การพัฒนาของพืช.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3922

อนุกรมวิธานเชิงตัวเลขของข้าวก่ำนาสวนบางพันธุ์ปลูกในภาคตะวันออกเฉียงเหนือของประเทศไทย
Provedor de dados: 106
Autores: Thira Tamwongsa; Amornrat Meesawat; Piyarat Itharat; Chanarong Jongkajornwit; Ladda Kongernnog; Chawanat Thongkam; Noungrathai Pungsook.
Numerical Taxonomy of the some Lowland - Black Rice in the Northeast of Thailand. Twenty-one specimens, Group and identification. The specimens were planted twice for the morphological characters were found to be useful for identification within the specimens, namely the high of culm, the color of internode, the color of leaf sheath, the color of collar, the color of auricle, the color of ligule, the color of leaf blade, the type of secondary branching of panicles, the color of sterile lemma, the color of apiculus lemma and palea, the color of stigma, the color of grain, the shape of grain, the color of brown rice, and the shape of brown rice, And hull anatomical characters. Results showed that, The Unweighted Pair Group Method with Arithmetic Mean (UPGMA)...
Tipo: Collection
Palavras-chave: Taxonomy; Lowland rice; Morphology; Anatomy; Physiology; ข้าวก่ำนาสวน; อนุกรมวิธานเชิงตัวเลข; ลักษณะทางสัณฐานวิทยา; ลักษณะทางกายวิภาคศาสตร์; ภาคตะวันออกเฉียงเหนือ.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5379

HEMATOLOGYCAL AND BLOOD BIOCHEMISTRY PARAMETERS OF CAPTIVE BIG-HEADED AMAZON RIVER TURTLES, Peltocephalus dumerilianus (TESTUDINES: PODOCNEMIDIDAE)
Provedor de dados: 37
Autores: ANSELMO,Neiana Pereira; FRANÇA,Mônica Ferreira de Lima; SANTOS,Mareio Quara de Carvalho; PANTOJA-LIMA,Jackson; SILVA,Cleide Karoline Pereira da; ARIDE,Paulo Henrique Rocha; OLIVEIRA,Adriano Teixeira de.
ABSTRACT The determination of hematological values is used to obtain knowledge about the health conditions of animal species. The big-headed Amazon River turtles, (Peltocephalus dumerilianus) are considered one of the least known testudine species concerning their biology and health status. Herein, we determined the hematological and plasma biochemical parameters of17 (eight males and nine females) adult P. dumerilianus to provide reference interval values for clinically healthy individuals. We collected the blood samples by puncturing the femoral vein using long heparinized hypodermic syringes. Sexual dimorphism for individuals was determined by external observation of the shape of the plastron. The average values obtained for the ten hematological and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Blood; Hematology; Physiology; Reptiles.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000200207

Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) responses to gasoline short-term exposure: biochemical and cellular alterations
Provedor de dados: 39
Autores: Ramlov,Fernanda; Carvalho,Tiago Jose Griebeler; Costa,Giulia Burle; Rodrigues,Eva Regina de Oliveira; Bauer,Claudia Marlene; Schmidt,Eder Carlos; Kreusch,Marianne Gabi; Moresco,Rodolfo; Navarro,Bruno Bachiega; Cabral,Debora Queiroz; Bouzon,Zenilda Laurita; Horta,Paulo Antunes; Maraschin,Marcelo.
ABSTRACT Presence of toxic compounds in marine coastal waters has increased exponentially since Industrial Revolution. In this way, we aimed to evaluate biochemical and physiological changes occurring within Hypnea musciformis after short-term exposure to gasoline. Hypnea musciformis was cultivated without gasoline and then exposed to various concentrations of it (0.001 % - 1.0 %, v/v) for periods of 30 min, 1 h, 12 h and 24 h. A Pricncipal Compound Analysis of UV-vis spectral window (200-700 nm) was able to discriminate gasoline-exposed samples according to both exposure time and gasoline concentration. Changes in carotenoid profile composition were observed. Decreased carotenoid content was associated to gasoline exposure time, being lutein and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical stress; Cellular organization; Gasoline pollution; Hypnea musciformis; Physiology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100116

Effects of salinity on the physiology of the red macroalga, Acanthophora spicifera (Rhodophyta, Ceramiales)
Provedor de dados: 39
Autores: Pereira,Débora Tomazi; Simioni,Carmen; Filipin,Elisa Poltronieri; Bouvie,Fernanda; Ramlov,Fernanda; Maraschin,Marcelo; Bouzon,Zenilda Laurita; Schmidt,Éder Carlos.
ABSTRACT Salinity is an important abiotic factor since it is responsible for the local and/or regional distribution of algae. In coastal regions, salinity changes with prevailing winds, precipitation and tide, and particularly in extreme intertidal conditions. Acanthophora spicifera is a red seaweed that occurs in the supratidal region in which changes in abiotic conditions occur frequently. This study evaluated the effects of salinity on the metabolism and morphology of A. spicifera. Algae were acclimatized under culture conditions with sterilized seawater for seven days. Experiments used different salinities (15 to 50 psu) for seven days, followed by metabolic analyses. This study demonstrates that extreme salinities affect physiological parameters of A....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acanthophora spicifera; Microscopy; Morphology; Physiology; Salinity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400555

Processed soybean in diets for pacu (Piaractus mesopotamicus)
Provedor de dados: 2
Autores: Stech, Marcia Regina; Carneiro, Dalton José.
Changes in development and in physiological parameters of fingerlings of the pacu (Piaractus mesopotamicus) fed on diets with high levels of integral crude, extruded, toasted soybean and soybean meal were assessed. The products were evaluated in practical diets for pacu, initially weighing  70 ± 2.19 g, during 82 days. Nine treatments were studied in a 2 × 4 + 1 factorial scheme which corresponded to two fish meal protein replacement levels (50 and 100%) and four soybean products, plus control (100% of fish meal - FM). Development, organosomatic indexes and physiological parameters were evaluated. No differences were reported with regard to weight gain, food intake, food conversion, protein efficiency ratio and specific growth rate. A significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.02-8 antinutritional factors; Body composition; Physiology.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24296

Níveis críticos do índice de conforto térmico para ovinos da raça Santa Inês criados a pasto no agreste do Estado de Pernambuco - DOI: 10.4025/actascianimsci.v31i2.3766
Provedor de dados: 2
Autores: Neves, Maria Luciana Menezes Wanderley; Universidade Federal Rural de Pernambuco; Azevedo, Marcílio de; Universidade Federal Rural de Pernambuco; Costa, Lígia Alexandrina Barros da; Universidade Federal Rural de Pernambuco; Guim, Adriana; Universidade Federal Rural de Pernambuco; Leite, Amanda Menino; Universidade Federal Rural de Pernambuco; Chagas, Juana Cariri; Universidade Federal Rural de Pernambuco.
O objetivo deste trabalho foi estimar os valores críticos do Índice de Conforto Térmico (ICT) para ovinos deslanados da raça Santa Inês em condições de pastejo, com base nos parâmetros fisiológicos. O experimento foi conduzido de janeiro a abril na região agreste do Estado de Pernambuco. Os parâmetros temperatura retal (TR) e frequência respiratória (FR) foram avaliados três vezes por semana nos períodos da manhã e da tarde. O ambiente foi monitorado diariamente, por intermédio de uma estação meteorológica instalada ao lado do piquete experimental. As medidas para as análises de regressão foram obtidas de 15 ovinos da raça Santa Inês, sendo cinco de cada cor: branca, castanha e preta. Baseando-se na TR, os valores críticos do ICT estimados para os ovinos...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.05.00-4 cor do pelame; Fisiologia; Termorregulação Produção Animal coat color; Physiology; Thermoregulation.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3766

Osmoregulation in tropical zoanthid Protopalythoa variabilis (Cnidaria: Anthozoa) - doi: 10.4025/actascibiolsci.v35i1.10970
Provedor de dados: 3
Autores: Soares, Marcelo de Oliveira; Universidade Federal do Ceará; Souza, Leonardo Peres de; Universidade Federal do Ceará.
This study evaluated the physiological, morphological and ethological effects of salinity variations on the tropical zoanthid Protopalythoa variabilis. This zoanthid was submitted to different salinity levels to probe the hypothesis of osmoregulation. Specimens collected in beach rocks from Northeastern Brazil were taken alive to the laboratory in their original water. The osmoregulatory ability of P. variabilis can be determined by measuring the hemolymph osmolality under various salinity conditions and comparing with the osmolality of the medium. The zoanthid P. variabilis is a “weak regulator”, as it only osmoregulates within a narrow range of external salinity values, and its hemolymph osmolality drops, approximately in parallel with the isosmotic...
Tipo: Estudos morfológicos e fisiológicos
Palavras-chave: 2.07.00.00-8    Fisiologia anthozoan; Salinity; Physiology; Reefs 2.07.00.00-8    Fisiologia.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10970

Screening of an adapted culture medium composed by different carbon sources for heterotrophic cultivation of Chlorella vulgaris using a microplate assay
Provedor de dados: 3
Autores: Fonseca, Gustavo Graciano; Silva, Alisson Alves da.
  The ability of microalgae to grow heterotrophically lies in the ability to oxidize organic compounds present in the external environment. The aim of this work was to evaluate the growth of Chlorella vulgaris under heterotrophic culture conditions using Basal Bold and NPK media supplemented with different sole carbon sources (glucose, fructose, sucrose, glycerol or acetate). The kinetic parameters obtained were maximum specific growth rate (µmax), doubling time (DT), maximal absorbance, which was also converted to cell concentration values using a linear relation, and cell productivity (PX). Among all the treatments analyzed, the highest maximum specific growth rate found was 0.030 hour-1 (0.72 day-1) in the treatment using Basal Bold medium supplemented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.12.00.00-9; 2.12.01.00-5 microalga; Physiology; Kinetic parameters; Growth rate. Biotecnologia.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/39401

Dental occlusal surface area in relation to body mass, food habits and other biological features in fossil xenarthrans
Provedor de dados: 41
Autores: Vizcaíno,Sergio F.; Bargo,M. Susana; Cassini,Guillermo H.
The Xenarthra includes the most intriguing mammals from the Cenozoic of South America: the glyptodonts (Cingulata) and the ground sloths (Tardigrada). Their masticatory apparatuses are diverse and peculiar, with a strongly reduced, hypselodont dentition that lacks enamel and displays different degrees of lobation. The goal of this study is to investigate the relationship between dental occlusal surface area (OSA) and diet, and other physiological factors in fossil xenarthrans. Over one hundred and fifty specimens, including living herbivorous epitherians and both extinct and living xenarthrans, were measured and photographed, and their OSA estimated and plotted against body mass. For most fossil xenarthrans OSA is smaller than expected for extant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mammalia; Xenarthra; Dental Occlusal Surface Area; Body mass; Diet; Physiology.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142006000100002

Physiological and cellular responses in two populations of the mussel Perna perna collected at different sites from the coast of São Paulo, Brazil
Provedor de dados: 52
Autores: Abessa,Denis Moledo de Souza; Zaroni,Letícia Pires; Sousa,Eduinetty Ceci Pereira Moreira de; Gasparro,Marcia Regina; Pereira,Camilo Dias Seabra; Rachid,Bauer Rodarte de Figueredo; Depledge,Michael; King,Rebecca Susan.
The physiological conditions of mussels from Ubatuba and Santos and also of organisms transplanted from Ubatuba to Santos were studied by using different techniques. Assays for lysosomal stability were conducted on the haemolymph. Heart rate activity was monitored for 6h. The embryonic development of larvae obtained from the collected mussels was analysed. For all the compared groups of mussels, no significant differences were observed for the cardiac activity monitoring and the embryonic bioassays. The mean Neutral Red (NR) retention time was similar for the animals from Santos and Ubatuba, whereas the organisms transplanted to Santos showed a reduction in the retention time of the dye, indicating damage in the lysosomal membranes. These differences were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Perna perna; Neutral red retention assay; Capmon system; Embryonic assay; Biomarkers; Physiology.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200008

Modifications on leaf anatomy of Coffea arabica caused by shade of pigeonpea (Cajanus cajan)
Provedor de dados: 52
Autores: Morais,Heverly; Medri,Moacyr Eurípedes; Marur,Celso Jamil; Caramori,Paulo Henrique; Ribeiro,Ana Maria de Arruda; Gomes,José Carlos.
Modifications on leaf anatomy in Coffea arabica shaded with pigeonpea (Cajanus cajan), compared to cultivation under full sun, were assessed. The leaves fully exposed to sunlight presented thicker cuticles and cellular walls, narrower epidermis cells, palisade parenchyma with longer cells, thicker lacunar parenchyma, fewer intercellular spaces and a larger stomata number. Leaves under dense shade presented a narrower cuticle and cellular wall; a mesophyll with smaller volume, but with larger intercellular spaces; and epidermis with thicker cells and a smaller stomata amount, surrounded by subsidiary cells of smaller dimensions. Plants grown under full sunlight presented higher values of net photosynthesis. The results evidenced that the species C. arabica...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; Shading; Morphology; Physiology; Agroforestry.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600005

Enzymatic Activity in the Gastrointestinal Tract of Pimelodus maculatus (Teleostei, Siluriformes) in Two Neotropical Reservoirs with Different Trophic Conditions
Provedor de dados: 52
Autores: Duarte,Silvana; Bemquerer,Marcelo; Araújo,Francisco Gerson.
Enzymatic activities for digestion of proteins and carbohydrates were compared among three organs of the digestive system of Pimelodus maculatus in two reservoirs with different trophic conditions during the winter of 2006. The aim was to test the hypothesis that enzymatic activity for the digestion of proteins and carbohydrates differed among organs and that such activities differ between the trophic state of the environment. Enzymatic activities were determined through the assays of specificity for trypsin, chymotrypsin and β-glucosidase enzymes. The intestine had higher trypsin-like enzymatic activities compared to the stomach and liver. The highest β-glucosidase activity was found in the liver compared to the stomach and intestine in the oligotrophic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzymes; Catfish; Physiology; Freshwater fishes; Digestive tract.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000400605

Effects of light and nutrients on different germination phases of the Cosmopolitan moss Bryum argenteum Hedw. (Bryaceae)
Provedor de dados: 52
Autores: Silva,Adaíses Simone Maciel da; Pôrto,Kátia Cavalcanti; Simabukuro,Eliana Akie.
The influence of light and nutrients on the different germination phases of Bryum argenteum spores was studied. The following treatments were used: distilled water and nutrient solution under light (12 h) and continuous darkness. The spores germinated when exposed to light, independent of both medium used. Under darkness, the spores swelled and became chlorophyllous. In the presence of nutrient solution, the germination occurred earlier (after two days) when compared to the distilled water (after more than three days). Nutrients were needed to complete the last germination phase in the majority of spores and to provide the protonemal growth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bryophyte; Physiology; Germination; Protonema; Light; Nutrients.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400003

An update on the physiology of two- and three-toed sloths
Provedor de dados: 56
Autores: Gilmore,D.P.; Da-Costa,C.P.; Duarte,D.P.F.
Physiological and pharmacological research undertaken on sloths during the past 30 years is comprehensively reviewed. This includes the numerous studies carried out upon the respiratory and cardiovascular systems, anesthesia, blood chemistry, neuromuscular responses, the brain and spinal cord, vision, sleeping and waking, water balance and kidney function and reproduction. Similarities and differences between the physiology of sloths and that of other mammals are discussed in detail.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Xenarthra; Sloths; Bradypus; Choloepus; Physiology.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000200001

Are experienced and high-level race walking athletes able to match pre-programmed with executed pacing?
Provedor de dados: 56
Autores: Alves,D.L.; Cruz,R.; Lima-Silva,A.E.; Domingos,P.R.; Bertuzzi,R.; Osiecki,R.; De-Oliveira,F.R.; Lima,J.R.P.
The objective of this study was to verify the agreement between pre-programmed and executed pacing during race walking and whether level of the athletes experience and performance influenced this relationship. Twenty-nine national and international race walkers participated in this study (14 males, 24.0±7.1 years old, and 15 females, 23.3±7.3 years old). Pre-programmed pacing for 10- and 20-km official walking races was self-selected via demonstrative pacing charts prior to races, while executed pacing was analyzed by a specialist investigator via an individual plot of current velocity versus distance. There was no agreement between pre-programmed and executed pacing (P=0.674). There was no association between the ability to match the pre-programmed pace...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic evaluation; Performance; Sport; Elite athlete; Physiology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000600608

Glomerular filtration is reduced by high tidal volume ventilation in an in vivo healthy rat model
Provedor de dados: 56
Autores: Luque,A.; Shimizu,M.H.M.; Andrade,L.; Sanches,T.R.; Seguro,A.C.
Mechanical ventilation has been associated with organ failure in patients with acute respiratory distress syndrome. The present study examines the effects of tidal volume (V T) on renal function using two V T values (8 and 27 mL/kg) in anesthetized, paralyzed and mechanically ventilated male Wistar rats. Animals were randomized into two groups of 6 rats each: V T8 (V T, 8 mL/kg; 61.50 ± 0.92 breaths/min; positive end-expiratory pressure, 3.0 cmH2O; peak airway pressure (PAW), 11.8 ± 2.0 cmH2O), and V T27 (V T, 27 mL/kg; 33.60 ± 1.56 breaths/min; positive end-expiratory pressure, none, and PAW, 22.7 ± 4.0 cmH2O). Throughout the experiment, mean PAW remained comparable between the two groups (6.33 ± 0.21 vs 6.50 ± 0.22 cmH2O). For rats in the V T27 group,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Artificial respiration; Kidney; Physiology; Glomerular filtration rate; Wistar rats.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001100017

Characteristics of a β-1,4-D endoglucanase from Trichoderma virens wholly applied in a palm-fruit husk-based diet for poultry layers
Provedor de dados: 58
Autores: Odeniyi,Olubusola A.; Onilude,Anthony A.; Ayodele,Maria A.
The characteristics of an endoglucanase produced by a Trichoderma virens strain T9 newly isolated from a palm-fruit husk dump site, its physiological characteristics and enzyme production were studied. Whole cells of the depolymerizing-enzyme producing T. virens were applied to palm-fruit husk and bird performance characteristics when employed as poultry diet additive were considered. Endoglucanase activity in submerged fermentation was 1.6 nkat. Optimum activity was recorded at pH 6.0 and 55ºC. The enzyme retained 50% residual glucanase activity at 70ºC for 10 minutes. 1.0% Tween-80 and SDS yielded endoglucanase activity 2.15 times higher than the control. Activity wasboosted by 20mM Ca2+ (115.0%); 10mM K+ (106.5%); and was totally inhibited by 1mM Hg2+....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichoderma virens; Endoglucanase; Physiology; Poultry layer feed.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400031

Ecophysiological factors underpinning productivity of Hevea brasiliensis
Provedor de dados: 61
Autores: Rodrigo,V.H.L.
High land productivity is a must for any commercial cultivation including Hevea brasiliensis (rubber). Also, the high demand for natural rubber has placed great pressure on expanding rubber cultivation to new and non-traditional areas. Understanding the ecophysiological principles behind the measures of productivity improvements is vital for wide application of these measures and to assess their sustainability. This review discusses the ecophysiological principles and tools used, along with the measures taken, to address productivity needs in terms of: genotype selection, determination of optimum planting density, and establishment of intercropping systems. Breeding for high yields and selection of suitable genotypes for different growing conditions are a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubber; Genotype selection; Intercropping; Planting density; Physiology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400002

Cracking in sweet cherries: A comprehensive review from a physiological, molecular, and genomic perspective
Provedor de dados: 117
Autores: Balbontín,Cristián; Ayala,Héctor; M. Bastías,Richard; Tapia,Gerardo; Ellena,Miguel; Torres,Carolina; Yuri,José Antonio; Quero-García,José; Ríos,Juan Carlos; Silva,Herman.
Rain-induced cracking in fruits of sweet cherry (Prunus avium L.) is a problem in most producing areas of the world and causes significant economic losses. Different orchard management practices have been employed to reduce the severity of this problem, although a complete solution is not yet available. Fruit cracking is a complex phenomenon and there are many factors that seem to be involved in its development. During the last decade, genomic and biochemical approaches have provided new insights on the different mechanisms that could be involved in the differential susceptibility shown by commercial cultivars. For instance, sweet cherry genome and transcriptome sequencing information have provided new opportunities to study the expression and structure of...
Tipo: Journal article
Palavras-chave: Physiology; Functional genomics; RNA seq.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100010

Effects of shading on the growth, development and yield of winged bean (Psophocarpus tetragonolobus)
Provedor de dados: 65
Autores: Raai,Murthazar Naim; Zain,Nurul Amalina Mohd; Osman,Normaniza; Rejab,Nur Ardiyana; Sahruzaini,Nurul Amylia; Cheng,Acga.
ABSTRACT: An experiment was conducted to investigate the effects of different shading regimes [i.e., 60% (heavy), 30% (moderate), and 0% (control)] on 25 traits associated with the morphological features, photosynthetic gas exchange and agronomic characteristics of winged bean (Psophocarpus tetragonolobus), an underutilized protein-rich legume from the tropics. Collectively, 80% of the studied variables displayed significant differences (P&lt;0.05) between at least two shade treatments. Shading generally showed most pronounced effect on the physiological traits of the legume, whereby the stomatal conductance, photosynthetic and transpiration rate differed significantly among plants for all treatments. The non-shaded plants were observed to have superior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Physiology; Shading; Winged bean; Yield.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200202

MORPHOLOGICAL RESPONSE OF THE RUMINAL AND OMASAL MUCOSAE TO THE VARIATION IN DIET ENERGY
Provedor de dados: 64
Autores: Lima,Ronaldo Francisco; Resende Júnior,João Chrysostomo; Costa,Suely Fátima; Daniel,João Luiz Pratti; Teófilo,Tiago Silva; Cardoso,Milton Ghedini.
ABSTRACT The absorption capacity of the rumen responds positively to direct and indirect stimulation by VFA; there is also evidence that the wall of the omasum also responds to these stimuli. To further investigate these reports, we compared the tissue morphologies of rumen and omasum biopsy samples. Four cows surgically fitted with ruminal cannulas were sequentially fed two diets. These diets included corn silage (S) and a combination of corn silage and commercial concentrate (CS). The animals were fed S for the first 18 days of the experiment, followed by CS for the next 18 days. They were then fasted for 72 h (F), and then had at least 18 days of re-feeding. Biopsy samples were taken from the blade of the omasum and the ventral sac of the rumen at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidosis; Morphology; Physiology; Transition diet.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000600574

EFFECTIVENESS OF POSTHARVEST SOLUTIONS FOR THE CONSERVATION OF CUT Oncidium varicosum (ORCHIDACEAE) INFLORESCENCES
Provedor de dados: 64
Autores: Mattiuz,Claudia Fabrino Machado; Mattiuz,Ben-Hur; Rodrigues,Teresinha de Jesus Deléo; Marques,Kelly Magalhães; Martins,Ramilo Nogueira.
The orchid Oncidium varicosum is a tropical plant with significant commercial value due to the beauty of its yellow inflorescences. Several authors have observed a reduction in the water content of cut flowers, consequently, wilting and senescence of petals are the main reasons for the termination of the decorative life of cut flowers. In this research, we studied the effects of several chemical compounds on the postharvest life of cut inflorescences of Oncidium varicosum 'Samurai'. These chemicals are as follows: sucrose (5%) plus 8-hidroxiquinoline citrate (8-HQC) (100 mg L-1) plus silver nitrate (AgNO3) (50 mg L-1); sucrose (5%) plus citric acid (75 mg L-1); quaternary ammonia at 30% (50 mg L-1); and sucrose (5%) plus quaternary ammonia at 30% (50 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physiology; Orchids; Flowers; Carbohydrates; Carotenoids; Relative water content.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000400315

Absorption and metabolism of volatile fatty acids by rumen and omasum
Provedor de dados: 64
Autores: Daniel,João Luiz Pratti; Resende Júnior,João Chrysostomo de.
Volatile fatty acids (VFA) absorption and metabolic capacity of rumen and omasum were compared, in vitro. Fragments of rumen wall and omasum laminae were taken from eight adult crossbred bovines. An isolated fragment of the mucosa was fitted in a tissue diffusion chamber. Valeric acid and CrEDTA were added to ruminal fluid and placed on the mucosal side and buffer solution was placed on the serosal side. Fractional absorption rates were measured by exponential VFA:Cr ratio decay over time. Metabolism rate was determined as the difference between VFA absorbed and VFA which appeared on the serosal side over time. Mitotic index was higher in omasum (0.52%) than in rumen epithelium (0.28%). VFA fractional absorption rate was higher in omasum (4.6%/h.cm²) than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Physiology; Bovine; Ussing chamber; Forestomach.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000100012