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Effect of ascorbic acid on food preference and consumption in captive capybaras (Hydrochoerus hydrochaeris) BABT
Alvarez,Martín Roberto; Kravetz,Fernando Osvaldo.
The aim of this work was to study the short and long term influences of ascorbic acid on Hydrochoerus hydrochaeris, if supplemented in their food. No differences regarding food intake were observed in the absence of vitamin C. On a daily basis, animals accustomed to food containing ascorbic acid prefered to continue eating the same food. Food preference in capybaras did not seem to depend on ascorbic acid availability; however, when accustomed to vitamin C, capybaras might recognize and select ascorbic acid in subsequent food. Mechanisms allowing capybaras to "evaluate" the nutritional quality of their food are discussed, as well as the adaptive value of this behavior in free ranging populations.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitamin C; Hydrochoeridae; Ecophysiology; Foraging; Nutrition; Feeding.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300011
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Tomato growth analysis across three cropping systems Horticultura Brasileira
Antônio,Adilson C; Silva,Derly JH; Araújo,Wagner L; Cecon,Paulo R.
ABSTRACT The objective of this work was to analyze the growth of the Upiã tomato cultivar in the Vertical, Crossed Fence and Viçosa cultivation systems, in order to obtain explanations for the productive gains achieved in the Viçosa system. The experiment was conducted in Viçosa, Minas Gerais State, Brazil, from August 21st to December 5th, 2012, in the scheme of subdivided plots, being the plots represented by the cultivation systems: Vertical, using tape, 1.0×0.5 m spacing; Crossed Fence, staked with bamboo, 1.0x0.5 m spacing; and Viçosa, using tape, 2.0x0.2 m spacing. The subplots were composed by the sampling times of the plants: 15, 30, 45, 60 and 75 days after transplanting. The experimental design was in randomized blocks, with four replications....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum lycopersicum; Ecophysiology; Physiological indices..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000300358
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Réponses écophysiologiques des espèces toxiques de Pseudo-nitzschia aux variations environnementales liées au changement climatique ArchiMer
Ayache, Nour.
The diatom Pseudo-nitzschia includes certain toxic species capable of producing domoic acid (DA), an amnesic neurotoxin. The proliferation of these toxic species presents many risks ranging from serious ecological and economic damage to threats to public health. Problems related to these proliferations are increasing worldwide and the need for scientist to better understand the environmental factors influencing the appearance of these blooms is more necessary than ever. In this context, several species and strains of Pseudo-nitzschia have been studied to better understand and predict their physiological responses to future climate change. In particular, the experiments carried out allowed to explore the impact of salinity variations and ocean acidification...
Tipo: Text Palavras-chave: Acide domoïque; Changement climatique; Écophysiologie; Pseudo-nitzschia; Amnesic shellfish poisoning; Climate change; Domoic acid; Ecophysiology; Pseudo-nitzschia.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00478/58969/61573.pdf
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L'adaptation ecophysiologique et sanitaire de l'ecrevisse turque Astacus leptodactylus a des milieux saumatres: Contribution a l'astaciculture ArchiMer
Barbe, D; Lautier, J; Vernet, G; Vey, A.
This influence of salt media on different aspects of biological cycle and on most common pathogenic agents of Turkish freshwater crayfish Astacus leptodactylus is investigated survival and growing of juveniles O super(+) and intermediary individuals 1 super(+) are also studied. Total osmotic metabolism and reproduction, have been recorded. It appears that youngest individuals are particularly sensitive to low salinities (7 ppt.). Intermediary ones are more resistant nevertheless salinity does not improve neither survival nor growing. Copulation, laying and pleopod egg fixation are particularly affected by salt waters. The only promising application of salinity parameter on astaciculture could be whether prophylactic or curative treatment with concentrated...
Tipo: Text Palavras-chave: Astacus leptodactylus; Malacostraca; Infectious diseases; Sexual reproduction; Growth; Mortality; Survival; Osmotic adaptations; Crayfish culture; Pathology; Metabolism; Salinity; Ecophysiology; Astaciculture; Régulation osmotique; Reproduction; Survie; Croissance; Pathologie; Ecophysiologie; Salinité; Astacus leptodactylus; Ecrevisse.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1185.pdf
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Feeding responses of Crassostrea gigas (Thunberg) to inclusion of different proportions of toxic dinoflagellates in their diet ArchiMer
Bardouil, Michele; Bohec, Madeleine; Bougrier, Serge; Lassus, Patrick; Truquet, Philippe.
An experimental flow-through system allowing determination of the feeding behaviour of individual molluscs was used to study oysters exposed to mixed diets composed of varying proportions of the diatom Thalassiosira weissflogii and two strains (toxic and nontoxic) of the dinoflagellate Alexandrium larnarense. Our results show that, when compared to a T. weissflogii unialgal diet, even a diatomltoxic dinoflagellate ratio as low in biomass as 90/10 reduced clearance rates and biodeposit production by oysters. Consumption was slightly but significantly decreased for a 50/50 diatomltoxic dinoflagellate mixture. For the toxic dinoflagellate unialgal diet, ingestion, absorption and consumption were completely inhibited. Thus, the inclusion of low amounts of...
Tipo: Text Palavras-chave: Crassostrea gigas; Thalassiosira weissflogii; Alexandrium tamarense; Ecophysiologie; Toxine paralysante des coquillages; Crassostrea gigas; Thalassiosira weissflogii; Alexandrium tamarense; Ecophysiology; Paralytic shellfish poison.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00017/12788/9729.pdf
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Ecophysiological deterministic model for Crassostrea gigas in an estuarine environment ArchiMer
Barille, Laurent; Heral, Maurice; Barilleboyer, Al.
An ecophysiological deterministic model of growth, reproduction and interactions between the bivalve and its estuarine environ ment was established for the Japanese oyster Crassostrea gigas. The environmental variables used in the model are: total particulate matter, particulate organic matter, particulate inorganic matter, chlorophyll, phaeopigments, proteins, lipids and carbohydrates. Rates of clearance, filtration, ingestion, absorption and respiration along with efficiencies of retention, selection and absorption are modelled with endogenous (dry weight of the animal, energy allocation between growth and reproduction) and exogenous variables (temperature, food quality and quantity). The model simulate the temporal evolution of two compartments: somatic...
Tipo: Text Palavras-chave: Crassoslrea gigas; Croissance; Écophysiologie; Modélisation; Turbidité; Crassostrea gigas; Ecophysiology; Growth; Modelling; Turbidity.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00038/14892/12219.pdf
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Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter ArchiMer
Barille, Laurent; Prou, Jean.
Feeding and growth of the Japanese oyster Crassostrea gigas is simulated by a deterministic model. However, physiological processes, estimated by statistical relationships, have not been tested under extreme environmental conditions such as high level of suspended particulate matter. Ecophysiological experiments were therefore conducted in situ in the Bay of Marennes-Oléron during a spring and neap tide cycle in May 1991, to get a better representation of 2 important components of the energy budget of the Japanese oyster: clearance rate and selection efficiency. The relationships previously established by Raillard et al. (1993) are re-evaluated by integrating the action of high seston load, typical of tidal effect within estuaries, on the physiological...
Tipo: Text Palavras-chave: Tidal cycles; Oysters culture; Growth; Feeding; Energy budget; Ecophysiology.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-3827.PDF
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Structures adaptatives a la filtration des aliments chez le crabe des sables, Scopimera gordonae ArchiMer
Bauchau, A.
In the sand crab, Scopimera gordonae the buccal appendages are adapted to an efficient mobilization and washing of the sand in order to collect the nutritive elements. These observations confirm the role of Scopimera gordonae in the recycling of the organic material associated with the sand particles.
Tipo: Text Palavras-chave: Malacostraca; Adaptations; Functional morphology; Mouth parts; Ecophysiology.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1389.pdf
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DEDUCTION : A research project for shrimp farming sustainability in New-Caledonia ArchiMer
Beliaeff, Benoit; Chim, Liet; Della Patrona, Luc; Goyard, Emmanuel; Herlin, Jose; Labreuche, Yannick; Walling, Emilie; Ansquer, Dominique; Brun, Pierre; Castex, Mathieu; Coatanea, Denis; Courties, Claude; De Lorgeril, Julien; Dufour, Robert; Frappier, Julie; Goarant, Cyrille; Huber, Matthias; Lemaire, Pierrette; Lemonnier, Hugues; Loubersac, Lionel; Le Roux, Frederique; Lucas, Ronan; Patrois, Jacques; Peignon, Jean-marie; Pham, Dominique; Ramage, Yannick; Soulard, Benoit; Vic, Marlene; Vourey, Elodie; Wabete, Nelly.
New Caledonian shrimp farming feasibility studies started in the mid-seventies. Today ca. 2000 tons of Litopenaeus stylirostris, introduced in 1978, are semi-intensively produced each year. Since fifteen years, production has been impacted by two seasonal vibriosis, the “Summer” syndrome caused by Vibrio nigripulchritudo in relation to pond bottom and water column quality, and the “Winter Syndrome” caused by Vibrio penaeicida in relation to drastic temperature drops . With the ambition of elucidating processes possibly leading to mortality outbreaks in ponds, Ifremer has been conducting a research program since 2003 under the DESANS project (2003-2006) and the present DEDUCTION project, equally funded by the South and North Provinces and by the Government...
Tipo: Text Palavras-chave: Shrimp farming; Technical and scientific support; Vibriosis; Water quality; Pathology; Ecophysiology; Genetics; Zoosanitary monitoring and procedures; Multifactorial and multidisciplinary approach.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00143/25438/23591.pdf
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Plantes et Systèmes de cultures horticoles. Equipe "écophysiologie de la qualité des fruits charnus" National Institute of Agronomic Research
Borel, Charlotte.
Tipo: Other Palavras-chave: Ecophysiology; Fruit quality; Prunus persica; Peach; Écophysiologie; Qualité du fruit; Fruit charnu; Pêche; Prunus persica; Modélisation.
Ano: 2004 URL: http://hdl.handle.net/2174/318
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Aspectos ecofisiológicos da pimenta-do-reino sob diversos tutores vivos. Repositório Alice
BOTELHO, M. do N.; ROCHA NETO, O. G. da; CONCEIÇÃO, H. E. O. da..
1992
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Pimenta-do-reino; Tutor vivo; Ecofisiologia; Black pepper; Ecophysiology.
Ano: 1992 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394303
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Optimisation des conditions hydrobiologiques pour la conservation de l'huître creuse Crassostrea gigas en système re-circulé ArchiMer
Buzin, Florence.
The maintenance of bivalve commercialisation du ring periods when sales are prohibited represents a major economic issue for shellfish-farming. To ensure their survival and to preserve the oyster Crassostrea gigas quality, their storage in land-based systems has been studied i) out of water in a cold room at 3°C with controlled humidity, enabling the bivalve sensory quality to be retained for 15 days, and ii) in recirculating systems in immersed conditions for 30 days. For the latter, the oysters were stored at 167 kg.m3 density in a tank equipped with an air-lift system, with water treated with UV and thermoregulated. A minimum of food was supplied to avoid mass tissue loss. A temperature of 16°C was defined as optimal to limit mortality and to avoid...
Tipo: Text Palavras-chave: Crassostrea gigas; Huître Pacifique; Système re-circulé; Ecophysiologie; Sauvegarde; Modélisation; Crassostrea gigas; Pacific oyster; Recirculating system; Ecophysiology; Safeguard; Modelling.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00092/20350/17995.pdf
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Dormancy of 'Imperial Gala' apple and 'Hosui' pear tree buds in a region of low chill occurrence Agronomy
Carvalho, Ruy Inácio Neiva de; Biasi, Luiz Antonio; Zanette, Flávio; Rendoke, José Carlos; Santos, Jean Magnus; Pereira, Gabriely Pinto.
The objective of this work was to evaluate the dormancy dynamic of Imperial Gala apple tree buds and Hosui pear tree buds in a region of low chill occurrence. Experiments were conducted between April and August in 2007 and 2008. Branches were collected every two weeks from an orchard at Porto Amazonas (Paraná State, Brazil). On the last sampling day, an additional set of branches was collected and refrigerated between 4°C and 7°C for 1,440 hours. Dormancy was evaluated using a biological test of single node cuttings isolated in growth chambers (GC) at 25°C with 16 hours of light exposure. The number of chill hours (CH) and chill units (CU) for the region were recorded. The two species were evaluated in separate experiments. We used 11 completely randomized...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.03.00-8 Malus domestica; Pyrus communis; Ecophysiology; Budburst; Endodormancy Fitotecnia.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17966
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Performance of Minneola tangelo trees grafted over six rootstocks in Colombia Tropical Lowland (1997-2010) Acta Agron. (Palmira)
Chaparro-Zambrano,Hans Nicolas; Hernández,David Ricardo; Mateus,Diana Mayerly; Orduz-Rodríguez,Javier Orlando.
Abstract 'Cleopatra' tangerine (Citrus reshni hort. ex Tanaka) is a commonly used rootstock in the piedmont of Meta department, Colombia for establishing of commercial citrus orchards. Have allowed a late production entrance rootstock and produced big plants when grafted with tangelo 'Minneola' (C. reticulata Blanco x C. paradise Macf), decreasing the productive efficiency in plants and hard crop practices. The evaluated performance were as follows: tree size, productive efficiency and fruit quality of tangelo 'Minneola' grafted in six rootstocks. It found that the cumulated production of 11 years was better with Citrumelo 'Swingle' (Citrus paradisi Macf. × Poncirus trifoliata (L.) Raf) with 1388.3 kg tree-1, followed by 'Cleopatra' (Citrus reshni hort. ex...
Tipo: Journal article Palavras-chave: Citrus; Ecophysiology; Genotype; Piedmont of Meta-Colombia.
Ano: 2017 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300397
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Diferentes sistemas de condução podendo alterar o comportamento ecofisiológico em BRS Cora cultivada no Vale do Submédio São Francisco. Repositório Alice
CHAVES, A. R. de M.; LEAO, P. C. de S.; AIDAR, S. de T.; SANTOS, L. M.; FERREIRA, P. P. B..
Tendo em vista a demanda pelos produtores de uva de suco para redução no custo de mão-de obra na produção, há necessidade de pesquisas com diferentes sistemas de condução, uma vez que cada um pode permitir certas atividades na área, tais como a mecanização parcial ou total, o que tornaria mais fácil as operações manuais, como poda, aplicação de defensivos e colheita. Os sistemas de condução utilizados proporcionam uma maior ou menor exposição da superfície foliar à radiação, podendo favorecer maior ou menor perda de água, a qual em algumas situações pode fazer com que as plantas apresentem sintomas de déficit hídrico (MOUTINHO-PEREIRA 2000). Essa condição pode promover redução na assimilação líquida de CO2, uma vez que pode ocorrer o fechamento dos...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: BRS Cora; Comportamento ecofisiológico; Sistema de condução; Videira; Vale do São Francisco; Uva; Variedade; Fisiologia; Sistema de Cultivo; Grapes; Ecophysiology.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115160
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How Do “Renewable Products” Impact Biodiversity and Ecosystem Services – The Example of Natural Rubber in China JARTS
Cotter, Marc; Martin, Konrad; Sauerborn, Joachim.
This paper aims to present the implications brought by the expansion of “renewable products” plantation systems in the tropics with cultivation of rubber (Hevea brasiliensis) as a main focus. Throughout South East Asia, natural forest is being replaced by rubber or oil palm (Elaeis guineensis) plantations, with severe consequences for the local flora and fauna. Main aspects of this review are: i) The provision of an overview over renewable resources in general and rubber in particular, with eco-physiological and agronomical information concerning rubber cultivation. ii) The effect of rubber plantations on biodiversity and species composition under different rubber farming approaches. In addition we debate the possible influences of such large scale land...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant production; Biodiversity research biodiversity; Renewable products; Rubber; Ecosystem services; Carbon sequestration; Ecophysiology.
Ano: 2009 URL: http://www.jarts.info/index.php/jarts/article/view/37
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Physiological responses of two ecologically important Kenyan mangrove crabs exposed to altered salinity regimes OceanDocs
De Wachter, B.; Gillikin, D.P.; Tack, J..
The potential long-term effects of altered salinity regimes on the bioenergetics of two ecologically important Kenyan mangrove crabs, Neosarmatium meinerti de Man, 1887 and Neosarmatium smithi H. Milne Edwards, 1853 were investigated in light of recent findings suggesting that groundwater redirection may alter salinity regimes in Kenyan mangroves. Although changes in groundwater may cause only small increases in salinities, these changes would be chronic and may impact crab populations already living above their optimal salinity. To assess potential impacts, fundamental physiological processes and hemolymph components were measured on animals acclimated to 16‰, 32‰, 48‰ and 65‰ for 4 weeks in a field laboratory. For comparative purposes, crabs were also...
Tipo: Journal Contribution Palavras-chave: Ecophysiology; Salinity Tolerance; Energy Budget; Osmoregulation; Sesarmidae; Crab fisheries.
Ano: 2004 URL: http://hdl.handle.net/1834/693
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Sticky Nightshade Infestation and Dispersion on an Integrated Soybean-Eucalyptus System at Subtropical Brazil Planta Daninha
DEISS,L.; MORAES,A.; PELISSARI,A.; PORFÍRIO-DA-SILVA,V.; DOMINSCHEK,R..
ABSTRACT: Trees in integrated crop-livestock systems can reduce infestation and dispersion of weeds because of a negative interference promoted by competition for light, water and nutrients. The objective of this study was to evaluate the infestation and dispersion of sticky nightshade (Solanum sisymbriifolium) in soybean in different positions between eucalyptus (Eucalyptus dunnii) double rows [20 m x (4 m x 3 m)] in an integrated crop-livestock system at Subtropical Brazil. The experiment was conducted in a randomized block design, with nine replications, and five equidistant positions between double rows (n=45) as treatments. Sticky nightshade was evaluated for infestation through biomass, plant density (reproductive and vegetative plants), and for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Integrated crop-livestock systems; Weed; Alley cropping; Ecophysiology; Agroforestry.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100207
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Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. Repositório Alice
DIAS FILHO, M. B..
This research focused on a comparative study of four important perenial weedy species from pastures and crop areas in eastern Brazilian Amazonia: Ipomoea asarifolia (Desr.) Roem. & Schultz (Convolvulaceae), Stachytarpheta cayennensis (Rich) Vahl. (Verbenaceae), Solanum crinitum Lam. (Solanaceae) and Vismia guianensis (Aubl.) Choisy (Guttiferae). Two major lines of experiments were conducted. The firts investigated some aspects of the seed ecology of the species: longevity in the soil, germination responses to light, nitrate and osmotic stress and the effect of planting depth on seedling emergence. The second line of experiments evaluated the effect of limited soil moisture or of contrasting light environments on physiological and morphological...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Erva daninha; Ecofisiologia; Brasil; Amazônia; Ipanema asarifolia; Stachytarpheta coyenannensis; Solanum crinitum; Vismia guianensis; Weed; Ecophysiology.
Ano: 1994 URL: http://www.alice.cnptia.embrapa.br/handle/doc/402604
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Detecção de condições de estresse em plantas e potencial para "screening" em milho através da fluorescência da clorofila. Repositório Alice
DURAES, F. O. M.; OLIVEIRA, A. C.; MAGALHAES, P. C.; MARTINEZ, C.A..
2000
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milho; Estresse; Ecofisiologia; Screening; Zea mays; Maize; Stress; Ecophysiology.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/484141
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