Consulta: subjectFacets:"Fish culture"
Registros recuperados: 122
Data/hora: 06/06/2024 05:49:32

Cytogenetic markers as diagnoses in the identification of the hybrid between Piauçu (Leporinus macrocephalus) and Piapara (Leporinus elongatus)
Provedor de dados: 74
Autores: Porto-Foresti,Fábio; Hashimoto,Diogo Teruo; Alves,Anderson Luis; Almeida,Rodrigo Braz Castilho; Senhorini,José Augusto; Bortolozzi,Jehud; Foresti,Fausto.
The genetic monitoring of interspecific hybrids involves the application of methodologies able to provide an easy and indubitable genetic characterization of both parental and hybrid individuals. In the present work, cytogenetic techniques were used to identify a hybrid lineage of "Piaupara" in order to caracterize them in relation to the parental species, Leporinus macrocephalus (piauçu) and L. elongatus (piapara). The cytogenetic analysis revealed that L. macrocephalus presented 2n = 54 chromosomes and a nucleolar organizer regions (NOR) at the telomere of the long arm of the submetacentric chromosome pair 2. Analysis of constitutive heterochromatin (C-banding) revealed a conspicuous block at the pericentromeric region on the long arm of a submetacentric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interspecific hybrid; Fish culture; Fish cytogenetics.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200005

Recomendações práticas para avaliação da qualidade da água na produção de tilápia em tanques-redes.
Provedor de dados: 14
Autores: QUEIROZ, J. F. de; FRASCA-SCORVO, C. M. D.; SCORVO FILHO, J. D.; TURCO, P. H. N.; LOSEKANN, M. E.; ISHIKAWA, M. M.; ALVES, J. M. C.
Resumo: esta Circular Técnica tem como objetivo fornecer informações sobre os principais aspectos do manejo produtivo para a criação de tilápia em tanques-redes em reservatórios rurais por meio da descrição das boas práticas de manejo (BPM). As BPM consistem em um conjunto de ações concretas, objetivas e específicas que tem por finalidade aumentar e assegurar a competitividade e a sustentabilidade dos sistemas de produção. A adoção de BPM é considerada uma das estratégias mais eficientes para reduzir eventuais impactos ambientais negativos causados pelos sistemas de produção de peixes, camarões e outros organismos aquáticos.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Qualidade da Água; Piscicultura; Tilápia; Tanque; Reservatório de Água; Fish culture; Water quality; Water quality standards; Tilapia (common name); Best management practices.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1131162

Uso de biomarcadores em peixe e boas práticas de manejo sanitário para a piscicultura.
Provedor de dados: 14
Autores: ISHIKAWA, M. M.; QUEIROZ, J. F. de; NASCIMENTO, J. L. do; PÁDUA, S. B. de; MARTINS, M. L.
Resumo: O aumento na produtividade da aquicultura brasileira está fortemente relacionado com a capacidade e efetividade de monitoramentos da sanidade dos organismos aquáticos e do ambiente. Procedimentos e ferramentas precisam ser incluídos na rotina da piscicultura para que os resultados econômicos, sociais e ambientais sejam positivos. Os biomarcadores em peixe para monitoramento da saúde e da qualidade da água podem ser integrados às Boas Práticas de Manejo Sanitário contribuindo para a promoção do bem-estar e saúde dos peixes e, consequentemente, para a qualidade do pescado. O objetivo deste documento é apresentar uma revisão sobre o uso de biomarcadores em peixe, esclarecer conceitos e propor boas práticas de manejo sanitário com a inclusão desta...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Biomarcador; Monitoramento sanitário; Piscicultura; Peixe de Água Doce; Sanidade Animal; Manejo de Água; Poluição da Água; Fish culture; Biomarkers; Freshwater fish; Best management practices; Water quality; Environmental management.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1127526

O uso do sulfato de cobre em ecossistemas aquáticos: fatores que afetam sua toxicidade em peixes de água doce.
Provedor de dados: 14
Autores: SAMPAIO, F. G.; BOIJINK, C. de L.; RANTIN, F. T.
O aumento mundial da contaminação de sistemas de água doce com inúmeros compostos químicos industriais e naturais é hoje um dos principais problemas ambientais.Mineração, emissão de esgoto doméstico, aplicação de fertilizantes e pesticidas degradam severamente os ecossistemas aquáticos com metais pesados. A aquicultura, caracterizada nas últimas décadas como potencial atividade agropecuária não está isenta desta negativa contribuição, uma vez que utiliza, em sua cadeia produtiva, compostos que interferem diretamente na cadeia trófica dos sistemas aquícolas. Dentre os principais produtos utilizados na piscicultura, para contornar as dificuldades no processo produtivo, pode-se citar o sulfato de cobre (CuSO4) que, quando utilizado indevidamente, gera efeitos...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Ecossistema aquático; Aquicultura.; Sulfato de cobre; Poluição da água; Peixe de água doce; Toxidez.; Copper sulfate; Water pollution; Toxicity; Freshwater fish; Fish culture.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/963179

PARÂMETROS ambientais e qualidade da água na piscicultura.
Provedor de dados: 14
bitstream/item/38452/1/ParametrosAmbientais-QualidadeAgua.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Piscicultua; Pará; Brasil.; Qualidade da Água.; Amazonia; Fish culture; Water quality.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/377896

Piscicultura de água doce: multiplicando conhecimentos.
Provedor de dados: 14
Cap. 1: Espécies de peixe para piscicultura. Cap. 2: Anatomia e fisiologia de peixes de água doce. Cap. 3: Sistema de produção de peixes. Cap. 4: Implantação de piscicultura em viveiros escavados e tanques-rede. Cap. 5: Monitoramento e manejo da qualidade da água em pisciculturas. Cap. 6: Nutrição e alimentação de peixes. Cap. 7: Princípios básicos de sanidade de peixes. Cap. 8: Genética aplicada à piscicultura. Cap. 9: Reprodução, larvicultura e alevinagem de peixes. Cap. 10: Engorda de peixes. Cap. 11: Despesca e abate de peixes. Cap. 12: Composição, alterações pós-morte e métodos de conservação do pescado.
Tipo: Livros
Palavras-chave: Feeding; Peixe de água doce; Piscicultura; Aquicultura; Fish culture.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1082280

Uso de material alternativo para construção de aquários e filtros para criação de peixes.
Provedor de dados: 14
Autores: FUJIMOTO, R. Y.; SANTOS, R. F. B.; FIGUEIREDO JUNIOR, A. M.
A piscicultura ornamental é uma atividade que pode ser implementada em módulos de criação, aumentando os investimentos paulatinamente. Ela pode ser realizada em áreas pequenas, ou em locais onde outra criação zootécnica não seja viável, principalmente quando se opta pelo sistema intensivo de cultivo em aquários.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Piscicultura ornamental; Piscicultura; Fish culture.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1009288

Procedimentos básicos para monitoramento da parasitofauna de peixes.
Provedor de dados: 14
Autores: ISHIKAWA, M. M.; SILVA, M. S. G. M. e; PÁDUA, S. B. de; OLIVEIRA, J. A.; DIAS, D. V. L.; SOUZA, B. H.
Resumo: Este trabalho tem o objetivo de descrever os princípios básicos para o monitoramento da parasitofauna de peixes, especialmente das brânquias e muco e consiste no primeiro passo para viabilizar a padronização de ferramentas para auxiliar o produtor a realizar o monitoramento sanitário em sua produção. Esta é uma metodologia simples e acessível, adaptada em laboratório da Embrapa Meio Ambiente para monitorar o estado de saúde dos peixes mantidos em experimentos laboratoriais, e que também pode ser utilizada no campo pelos técnicos e piscicultores.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Manejo sanitário; Parasito animal.; Peixe de água doce; Piscicultura; Análise de laboratório.; Animal parasites and pests; Fish culture.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1048329

Metodologia de biomonitoramento aplicada a reservatórios com tanques-rede de piscicultura.
Provedor de dados: 14
Autores: SILVA, M. S. G. M. e; ROSA, A. J. de M.; RUOCCO, A. M. C.; DIAS, E. S.; KOBAYASHI, J. T.
Resumo: Este documento apresenta as metodologias empregadas nos reservatórios de Ilha Solteira e Chavantes, para avaliação da qualidade da água e do sedimento em áreas aquícolas com tanques-rede. Tal pesquisa é parte do Projeto BRS Aqua, Plano de Ação "Protocolo de Biomonitoramento em reservatórios com atividade de aquicultura baseado em insetos aquáticos", cujo objetivo final é a proposição de um protocolo de biomonitoramento para as áreas estudadas e está relacionado ao Objetivo de Desenvolvimento Sustentável da ONU (ODS 6), meta 6.3: "Até 2030, melhorar a qualidade da água, reduzindo a poluição, eliminando despejo e minimizando a liberação de produtos químicos e materiais perigosos, reduzindo à metade a proporção de águas residuais não tratadas e...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Biomonitoramento; Tanque-rede; Qualidade da Água; Piscicultura; Reservatório de Água; Tanque; Water quality; Water quality analysis; Fish culture; Water reservoirs; Aquaculture tanks; Environmental monitoring.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1131496

Sistema web para gestão de banco de dados para biomonitoramento na piscicultura em viveiros escavados.
Provedor de dados: 14
Autores: CRECCI, C. V.; SILVA, M. S. G. M. e; LOSEKANN, M. E.; ISHIKAWA, M. M.
O sistema web descrito nesta publicação é um sistema web para gestão de um banco de dados, acessível e amigável para o público leigo, principalmente produtores de tilápia em viveiros escavados, incluindo informações sobre organismos bentônicos, parasitos de peixes e variáveis físicas e químicas de qualidade de água, bem como de suas respectivas coletas nas propriedades da Associação Paulista de Piscicultores.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bioindicadores; Monitoramento ambiental; Piscicultura; Base de Dados; Environmental monitoring; Environmental indicators; Fish culture.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1096808

Boas práticas de manejo para manter concentrações adequadas de oxigênio dissolvido em viveiros de piscicultura.
Provedor de dados: 14
Autores: QUEIROZ, J. F. de; BOEIRA, R. C.
Este comunicado técnico apresenta um conjunto de Boas Práticas de Manejo (BPM) para manter uma concentração adequada de OD em viveiros de piscicultura, uma vez que a troca de água dos viveiros não é um método efetivo e ambientalmente sustentável, conforme demostrado por meio de alguns exemplos práticos.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Oxigênio dissolvido; Piscicultura; Viveiro; Qualidade da água; Fish culture; Dissolved oxygen; Water quality; Good aquaculture practices.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1062610

Aquicultura: manejo e aproveitamento de efluentes.
Provedor de dados: 14
Autores: SILVA, M. S. G. M. e; LOSEKANN, M. E.; HISANO, H.
Resumo: O trabalho aborda inicialmente o panorama atual da aquicultura mundial, enfatizando o crescimento da produção da ordem de 3,2% no período de 1961-2009, e da brasileira, na qual houve um incremento de 40% nas atividades aquícolas continentais durante os anos 2008-2010. No entanto, esta evolução numérica nem sempre foi acompanhada de práticas de manejo sustentáveis dos efluentes gerados, o que compromete a qualidade da água. Com o propósito de orientar na gestão sustentável da água utilizada nas atividades aquícolas, bem como dos resíduos gerados, são apresentados métodos de tratamento da água usada na produção, notadamente os naturais, como os biofiltros e aplicação de efluentes no solo (fertirrigação). A aquaponia ? integração da aquicultura com a...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Efluentes; Hidroponia.; Aquicultura; Impacto ambiental; Desenvolvimento sustentável; Piscicultura; Qualidade da água; Tratamento da água.; Aquaculture; Fish culture; Effluents; Environmental impact; Water quality; Aquaponics.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/972692

Criação de tambaqui.
Provedor de dados: 14
Autores: TEIXEIRA, R. N. G.
bitstream/item/39864/1/RB36-OK.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Criação de peixe; Colossoma macropomun; Budgets.; Orçamento; Piscicultura; Tambaqui; Tanque.; Fish ponds.; Fish culture.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375236

Plataformas de coleta de dados para monitoramento ambiental de pisciculturas em tanques-rede.
Provedor de dados: 14
Autores: GIROTTO, M. V. F.; SILVA, C. M. da; SAMPAIO, F. G.; STECH, J. L.; MENDES, G. O.; DALSASSO, R. F.; BODELÃO, A. G; MATOS, F. T. de; MESSIAS, J. A.
Resumo: A publicação tem como objetivo apresentar as principais orientações para fundeio, manutenção e operação das plataformas de coleta de dados de qualidade da água e do sistema integrado de monitoramento ambiental (Sima), bem como os procedimentos rotineiros das sondas e das linhas de sensores de temperatura, tendo como base uma metodologia de baixo custo, eficiente e com confiabilidade na obtenção dos dados.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Piscicultura; Qualidade da Água; Equipamento; Coleta de Dados; Fish culture; Measuring devices; Water quality analysis; Environmental monitoring.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133412

Cultivo de tambaqui sob gaiolas flutuantes.
Provedor de dados: 14
Autores: TEIXEIRA, R. N. G.
bitstream/item/64479/1/Oriental-RecBas1.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Pará; Brasil; Fish capes.; Gaiola; Peixe de Água Doce; Piscicultura; Tanque.; Tambaqui; Amazonia; Freshwater fish.; Fish culture.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376518

Efeitos da aplicação de grandes quantidades de calcário agrícola em viveiros de piscicultura.
Provedor de dados: 14
Autores: QUEIROZ, J. F. de; BOEIRA, R. C.; NICOLELLA, G.
Resumo: Durante os últimos anos tem-se disseminado o uso de aplicações de grandes quantidades de calcário agrícola (CaCO3), entre 1.000 a 2.000 kg/ha, em viveiros de aquicultura na Ásia e em outros países, como no Brasil. A hipótese que justificaria esta prática seria que a adição de altas doses de calcário provocaria a precipitação do fitoplâncton, a sedimentação das partículas de argila em suspensão e a melhoria da qualidade da água dos viveiros poucos dias após a aplicação, porém não há estudos que comprovem sua eficiência. Portanto, este estudo foi desenvolvido com o objetivo de avaliar os efeitos da adição de alta dose de calcário agrícola (2.025 kg/ha) em parâmetros de qualidade de água de viveiros de piscicultura. Utilizaram-se seis viveiros...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Calagem calcário.; Piscicultura; Tanque; Viveiro; Qualidade da água.; Fish culture; Liming; Fish ponds.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1065473

Boas práticas de manejo para piscicultura em tanques-rede.
Provedor de dados: 14
Autores: QUEIROZ, J. F. de; ROTTA, M. A.
Resumo: O objetivo desta Circular Técnica é indicar um conjunto de boas práticas de manejo para a produção de peixes em tanques-rede de modo a atender as regulamentações impostas pela Lei 12.651, de 25 de maio de 2012, conhecida como Novo Código Florestal, que dispõe sobre a proteção da vegetação nativa, a adoção de boas práticas agrícolas, como por exemplo, na prevenção dos processos erosivos do solo nas Áreas de Preservação Permanente, de proteção ambiental e da preservação dos recursos hídricos.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Boas práticas de manejo; Tanques-rede; Piscicultura; Proteção ambiental; Qualidade da água; Tanque; Produtividade; Fish culture; Best management practices; Environmental protection; Water quality.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1060545

Piscicultura no Lago de Sobradinho.
Provedor de dados: 14
Autores: CAMPECHE, D. F. B.; MELO, J. A.
O Lago do Sobradinho é localizado no norte Estado da Bahia, e cercado pelos municípios: Casa Nova, Sobradinho, Sento Sé Pilão Arcado. A aptidão do lago do Sobradinho para a piscicultura e a grande demanda de mercado para pescado, direcionaram os projetos da Companhia de Desenvolvimento do Vale do São Francisco e Paranaíba ? CODEVASF- e da Bahia Pesca para a construção de unidades demonstrativas (UDs) de produção de tilápia em tanques-redes, no início da década de 2000. Esse projeto, pioneiro na piscicultura local, contou também com o apoio do Sebrae-BA, da então Secretaria da Pesca e Aquicultura/extinto Ministério da Pesca e Aquicultura e alguns anos depois da Embrapa Semiárido. O propósito foi despertar para a aquicultura, incentivar a atividade e o...
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Lago de Sobradinho; Casa Nova; Sento Sé; Bahia; Associação de pescadores; Piscicultura; Pesca; Método de Pesca; Sistema de Produção; Tilápia; Pescador; Artisanal fishing; Fish; Fish culture; Fish development; Fish farms; Agropisciculture.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1098042

Instruction administrative des dossiers de demande de creation ou de rgularisation des piscicultures en eau douce
Provedor de dados: 5
Autores: Heuze, Y; Huitric, G.
This paper gives a picture of French legislation on the creation or the regularization of freshwater fish breeding through the study of a file by government service.
Tipo: Text
Palavras-chave: France; Legislation; Fish culture; Freshwater aquaculture.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1333.pdf

Bacteries ichtyopathogenes en mariculture
Provedor de dados: 5
Autores: Vigneulle, Martine.
Bacterial infections occurred during the development of marine fish farming of species such as turbot, sea-bass, sea-bream or salmon and trout. The main-specific bacteria involved in these diseases observed belong to 3 groups: the Vibrionaceae for Vibrio anguillarum (type 408) and Aeromonas salmonicida , the causative agents of respectively vibriosis and furinculosis; the Corynebacteriaceae for Renibacterium salmoninarum , responsible for bacterial kidney disease (BKD), the Enterobacteriaceae for Yersinia ruckeri , the causative agent of enteric redmouth disease. The clinical signs typical of those diseases always depend on the rearing and environmental conditions. The losses resulting from these bacterial diseases and the persistence of the bacteria in...
Tipo: Text
Palavras-chave: Yersinia ruckeri; Renibacterium salmoninarum; Aeromonas salmonicida; Vibrio anguillarum; Bacteria; Bacterial diseases; Fish culture; Pathogenic bacteria.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-996.pdf

Aquaculture in Hawaii: Past, present, and future
Provedor de dados: 5
Autores: Wyban, J; Wyban, C.
Hawaii's aquaculture industry has a long and colorful history. When Cook arrived in Hawaii in 1778, over 350 fishponds were in operation. Future prospects for Hawaii's industry are bright. Expanded R&amp;D activities have the greatest growth potential with technology transfer through international consulting and training likely. Commercial activities will focus on intensive culture of shrimp, finfish and seaweeds.
Tipo: Text
Palavras-chave: Intensive culture; Fish culture; Shrimp culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1497.pdf

Marine finfish pathology: Specific problems and research in the French West Indies
Provedor de dados: 5
Autores: Gallet Desaint Aurin, D; Raymond, J; Vianas, Viviane.
The finfish species reared in marine intensive conditions in the French Caribbean Islands are imported (European seabass, American red drum and Oreochromis hybrids) or local (Carangids and Lutjanids) species. The European seabass (Dicentrarchus labrax ) is susceptible, during its first year of life, to a contagious disease characterized by whirling and hyperexcitability, associated with severe lesions of the brain, viral particles being pointed out in the damaged nervous cells.
Tipo: Text
Palavras-chave: Growth; Hatcheries; Nutrient deficiency; Nutritional requirements; Pathology; Parasitic diseases; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1478.pdf

The culture of Hoplosternum littorale : State of the art and perspectives
Provedor de dados: 5
Autores: Luquet, P; Boujard, Thierry; Planquette, P; Moreau, Y; Hostache, G.
Hoplosternum littorale is a siluriform fish of very high commercial value in some countries of South America. Some biological characteristics as easy spawning in confinement and good tolerance of low oxygen level make it easy to cultivate.
Tipo: Text
Palavras-chave: Fish ponds; Incubation; Brood stocks; Circadian rhythms; Sexual maturity; Sex ratio; Rearing; Respiration; Survival; Diets; Larvae; Fecundity; Hatching; Oxygen; Feeding behaviour; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1491.pdf

Salmoniculture marine : la collecte, une étape clé
Provedor de dados: 5
Autores: Knockaert, Camille.
For several reasons, the harvest stage is most important in aquaculture. Not properly managed, it may diminish efforts invested throughout the whole culture cycle. This operation consists in harvesting and in killing the fish for marketing purposes and must be achieved with care to optimizing the final quality of the product in terms of flavor, sanitary aspects and preparing it well for processing. Analysing the numerous complaints expressed by endusers concerning the quality of cultured salmon demonstates that the harvest stage is the main cause of these failures. Among the failures reported, we can quote the problems of "gaping" (disconnection of the myotomes in the fillets), of brown spots (spotlights of blood), of soft texture, discoloration and early...
Tipo: Text
Palavras-chave: Slaughtering; Salmons; Quality; Marketing; Fish culture; Fish processing.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6559.pdf

Effect of chronic exposure to ammonia on alterations of proteins and immunoglobulins in sea bass (Dicentrarchus labrax) serum
Provedor de dados: 5
Autores: Coeurdacier, Jean-luc; Dutto, Gilbert.
The relationship between serum protein, immunoglobulin concentrations and protein molecular weight profile (PMWP) alterations of sea bass (131.3 +/- 4.3 g) reared in sea water with sublethal concentrations of ammonia was studied over two periods totalling 116 days. During the exposure period (62 days) the first group (group 1) lived in sea water with 0.204 mg.L-1 unionized ammonia nitrogen equivalent to 12 % of the lethal concentration for 50 % of a population exposed for 96 h to ammonia (96-h LC50), whilst the second group (group 2) lived in sea water with 0.340 mg.L-1 UIA-N equivalent to 20 % of the 96-h LC50 of ammonia. Then, the two groups were left for a recovery period (54 days) in the same water as the control group (group 0). The determination of...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Fish culture; Proteins; Immunoglobulin; Sublethal toxicity; Ammonia; Dicentrarchus labrax; Poisson d'élevage; Protéine; Immunoglobuline; Toxicité sublétale; Ammoniaque.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/publication-858.pdf

Pisciculture et environnement en Espagne
Provedor de dados: 5
Autores: Vasquez, Marta.
The author presents a brief picture of Spanish fish breeding and its water legislation (laws and sanctions) including environmental impact study.
Tipo: Text
Palavras-chave: Spain; Environmental impact; Water quality; Legislation; Fish culture.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1328.pdf

Genetics of European seabass (Dicentrarchus labrax L.)
Provedor de dados: 5
Autores: Chatain, Beatrice; Chavanne, Herve.
The production of sea bass, a major species in Mediterranean fish farming, still relies in many cases on the production of fingerlings issued from wild breeders. Still, genetic improvement is a major key to sustainable development for all optimized forms of animal production. Three types of genetic improvement can be acheived in fish: i) the production of monosex populations. For seabass, monosex female populations would be the objective as females grow 20-30% faster than males. However, sex determination in this species is complex, impacted by both genetic and environmental factors. Hence, production of monosex populations is not yet a routine operation, although in some cases almost 100% female batches have been obtained; ii) chromosome set...
Tipo: Text
Palavras-chave: Sea fishes; Population genetics; Mediterranean zone; Fish culture; Dicentrarchus labrax; Breeding.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6562.pdf

Freshwater aquaculture in the United States: Complying with environmental protection law and policy
Provedor de dados: 5
Autores: Noble, M.
The author deal with the relations between the freshwater fish culture and the many regulations of the environmental protection in USA. The author develops the federal and state administrative frameworks (federal government administration of aquaculture, the state government administration of aquaculture), the freshwater aquaculture and water rights, the freshwater aquaculture and wetlands regulation, the freshwater aquaculture and water quality regulation, the freshwater aquaculture and wildlife laws, the private rights: common law nuisance.
Tipo: Text
Palavras-chave: USA; Nature conservation; Fish culture; Legal aspects; Environmental monitoring; Wetlands; Surveillance and enforcement; Water quality control; Environmental protection; Freshwater aquaculture; Water rights; Legislation.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1323.pdf

Effects de le temperature et du regime alimentaire sur certains parametres de l'immunite cellulaire du loup de mer en elevage
Provedor de dados: 5
Autores: Deschaux, P; Peres, G.
The data showed that antibody response and NK cells activity of a teleostean fish Dicentrarchus labrax (Loup de mer) were maximal when animals were bred at a temperature equal to 18 degree C. A proteinoprive diet enhanced T cytotoxic response and diminished NK cell activity. A fast of 15 days had no effect on these two cellular responses.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Antibodies; Starvation; Toxicity; Cells; Immunity; Diets; Nutrition; Temperature effects; Fish culture.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1248.pdf

Induced spawning of red drum, Sciaenops ocellatus: use of multivariate and univariate analysis methods in the search for side effects of LH-RHa treatments and ovarian development state upon spawn quality
Provedor de dados: 5
Autores: Gardes, Lionel; Villanove, Philippe; Buchet, Vincent; Fauvel, Christian.
The present work examines the usefulness of the combination of multivariate analyses and further one-way analysis of variance in the search for links between causes and effects in heterologous stimulation of spawning in fish. Stimulations with both 20 and 50 mu g . kg(-1) doses of [D Trp(6)] luteinizing hormone-releasing hormone analogue (LH-RHa) were effective in inducing and synchronizing spawning of red drum, Sciaenops ocellatus. Oocyte development monitoring using ovarian biopsy allowed treatment injections at different stages of maturation. The influence at stimulation time of female oocyte development state upon further development was shown. An interesting potential of second stimulation, leading to high quality spawns, was established and factors...
Tipo: Text
Palavras-chave: Pisciculture; Induction de la ponte; LH-RH analogues; Analyse multivariée; Qualité des oeufs; Développement ovocytaire; Ombrine; Sciaenops ocellatus; Fish culture; Induced breeding; LH-RH analogues; Multivariate analysis; Egg quality; Oocyte development; Red drum; Sciaenops ocellatus.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00187/29875/28361.pdf

Reglementation administrative et pisciculture
Provedor de dados: 5
Autores: Helin, J.
The author discusses the legislation related to fish farm, regarding three aspects: precariousness of the working permit on the maritime public property, the water legislation and the laws on inheritance. This aspects have a bad influence on fish farmers activities.
Tipo: Text
Palavras-chave: France; Sociological aspects; Fish culture; Legislation.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1336.pdf

Enrichment of live foods.
Provedor de dados: 5
Autores: Watanabe, T.
Live foods such rotifers and Artemia are still indispensable for mass propagation of larval fish. At present, more than 20 fish and crustacean species are mass produced in Japanese governmental fish farming centres and private hatcheries. Fry are either released into the coastal areas or used for commercial cultivation. This culture technology is rapidly developing with new species being introduced each year and larval rearing is increasingly identified as the number one constraint. Artemia is used most extensively, particularly for the mass production of Kuruma prawn, Penaeus japonicus .
Tipo: Text
Palavras-chave: Penaeus japonicus; Malacostraca; Rotifera; Diets; Larvae; Brine shrimp culture; Nutrition; Marine crustaceans; Shrimp culture; Hatcheries; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1444.pdf

Bacteries associees aux production de Brachionus plicatilis
Provedor de dados: 5
Autores: Nicolas, Jean-louis; Joubert, M.
Bacteria associated with semi-continuous culture of Brachionus plicatilis , which is used as the first food of marine fish larvae, were counted on Zobell 2216 E medium and identified. The numbers of bacteria were very high in both Brachionus (about 10 super(11) bact. per ml of digestive content) and in water (from 1.6.10 super(6) to 4.7.10 super(7) bact. per ml). The cultures were studied at driving a time when mortalities occurred frequently. The introduction of a Pseudomonas) phenon at a proportion of about 50% to the dominant microflora persisted in time and was little influenced by diet. It has been the cause of the repression of the Vibrio, Aeromonas group which was found in an unusually small proportion. It induced a lack of microflora diversity and...
Tipo: Text
Palavras-chave: Brachionus plicatilis; Rotifera; Pseudomonas; Aeromonas; Vibrio; Nutrition; Pathology; Fish culture; Fish larvae; Food organisms; Bacteria; Continuous culture; Ecological associations; Zooplankton culture.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-994.pdf

Hormone-induced spawning of cultured tropical finfishes.
Provedor de dados: 5
Autores: Marte, C.
Commercially important tropical freshwater and marine finfishes are commonly spawned with pituitary homogenate, human chorionic gonadotropin (HCG) and semi-purified fish gonadotropins. These preparations are often administered in two doses, a lower priming dose followed a few hours later by a higher resolving dose. Interval between the first and second injections may vary from 3-24 hours depending on the species. Variable doses are used even for the same species and may be due to variable potencies of the gonadotropin preparations.
Tipo: Text
Palavras-chave: Teleostei; Pisces; Tropical fish; Induced breeding; Sex hormones; Animal reproductive organs; Marine fish; Freshwater fish; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1436.pdf

L'activite de deplacement et le reperage de la nourriture chez le bar juvenile captif
Provedor de dados: 5
Autores: Anthouard, M; Paris, J.
Movement activity and localization of food were studied dynamically with the objective of establishing the capacities of behavioral adaptation of the young Dicentrarchus labrax faced with a novel situation. The role played by previous rearing conditions was demonstrated, the level of stimulation being a sensitive intervening factor (currents associated with the food). The data show the favourable effects of such treatment, and are in agreement with work carried out on higher vertebrates, which have brought to light the importance of early stimulation in behavioral ontogeny which respect to emotionality as well as capacities of adaptation in subjects reaching adulthood.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Juveniles; Stimuli; Locating; Locomotion; Fish culture; Nutrition; Ethology.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1253.pdf

A simple way of avoiding feed wastage in European seabass, Dicentrarchus labrax, under self-feeding conditions
Provedor de dados: 5
Autores: Coves, Denis; Gasset, Eric; Lemarie, Gilles; Dutto, Gilbert.
Self-feeding systems allow fish to freely express feeding activity. A simple rod at the water surface can act as a trigger and provide fish with a way of obtaining pellets from a feeder. Such a rod presented to experienced European seabass, Dicentrarchus labrax, may lead to feed wastage, probably as a result of unintentional fish contacts with the trigger. Trigger protection screens have been designed to prevent fish contacting the trigger by chance, and the efficacy of such screens was tested. Nocturnal and diurnal feed delivery and feed wasted were compared under conditions where the rod was unprotected or protected by semi-cylindrical or cylindrical screens. Tests were conducted using an unrestricted self-feeding regime (reward: 0.2 g pellet per kg of...
Tipo: Text
Palavras-chave: Feeding behaviour; Feed wastage; Self feeding; Fish culture; Comportement alimentaire; Gaspillage d'aliment; Auto alimentation; Élevage de poissons.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/publication-867.pdf

Dietary TAG source and level affect performance and lipase expression in larval sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Morais, Sophia; Cahu, Chantal; Zambonino-infante, Jose-luis; Robin, Jean; Ronnestad, I; Dinis, M; Conceicao, L.
The influence of dietary TAG source (fish oil, triolein, and coconut oil) and level (7.5 and 15% of the diet) on growth, lipase activity, and mRNA level was studied in sea bass larvae, from mouth opening until day 24 and from day 37 to 52. Fish oil and triolein induced better growth in both experiments, this being significant at a higher dietary level. Coconut oil significantly decreased growth at the higher level, possibly as the result of an excessive supply of medium-chain TAG. Growth was not related to lipase specific activity, suggesting a production in excess to dietary needs. Body lipid content was positively related to dietary lipid level and was affected by lipid quality. In addition, larval FA composition generally reflected that of the diet. The...
Tipo: Text
Palavras-chave: Lipase activity; Dietary; Growth; Larvae; Sea bass; Fish culture.
Ano: 2004
URL: https://archimer.ifremer.fr/doc/2004/publication-785.pdf

Review of grow-out techniques under tropical conditions: Experience of Thailand on seabass (Lates calcarifer ) and grouper (Epinephelus malabaricus)
Provedor de dados: 5
Autores: Tookwinas, S.
Seabass and grouper have been reared in cages in coastal waters in Thailand for 10 years. The fingerlings are nursed for a month in nylon nursing cages. Then, the juvenile fish are reared in culture cages which can be stationary or floating. The cage is usually 5 x 5 x 2 metres. The stocking density is around 500 to 2000 fish per cage. The survival rate is approximately 80%. The selling price at the culture site is 80 baht and 250 baht per kg for sea bass and grouper respectively. The culture method and economics of culture are explained.
Tipo: Text
Palavras-chave: Marketing; Diseases; Dissolved oxygen; Stocking density; Physicochemical properties; Water quality; Feeding; Feed; Survival; Juveniles; Nursery ponds; Floating cages; Rearing; Fish culture; Fingerlings; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1423.pdf

Marine fish culture of "new species" farmed in Europe
Provedor de dados: 5
Autores: Suquet, Marc; Divanach, Pascal; Hussenot, Jerome; Coves, Denis; Fauvel, Christian.
In Europe, fish aquaculture in a marine environment developed following two successive waves: Atlantic salmon and then sea-bass and sea-bream. Rearing "new marine fish species" is sustained for many complementary reasons. This paper aims at presenting the aquaculture status of these "new species," research carried out and then problems and perspectives suggested by farming development in these species.
Tipo: Text
Palavras-chave: Species; Sea fishes; Fish culture; Europa; Diversification.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6558.pdf

La pisciculture marine : un secteur industriel en émergence
Provedor de dados: 5
Autores: Paquotte, Philippe; Harache, Yves.
In a general context of low progression, European aquaculture has been characterized by the development of intensive fish farming. The most notable fact is the recent increase in intensive salmonid farming, with a turnover of almost two million ECU. More recently, the intensive farming of sea bass and sea bream has increased very rapidly in the Mediterranean Basin, although on a more reduced extent. Although research has started as soon as the seventies with a strong public incentive both for salmon, sea bass and sea bream, the development of these different types of aquaculture has not been done at the same pace. Some elements of sectorial dynamics are analysed such as research planning and financing, organization of the production and public policy. For...
Tipo: Text
Palavras-chave: Europe; Environmental protection; Economic development; Production structure markets; Saltwater fishes; Sea bream; Sea bass; Atlantic salmon; Marine environment; Fish culture; SEM; Europe; Protection de l'environnement; Développement économique; Marché; Structure de production; Poisson de mer; Dorade; Bar; Saumon atlantique; Milieu marin; Pisciculture.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/1996/publication-4104.pdf

Etude cytologique ultrastructurale des anomalies hepatiques du loup, de la daurade, et de l'anguille, induites par une alimentation artificielle
Provedor de dados: 5
Autores: Bac, N; Biagianti, S; Brusle, J.
In the three species Dicentrarchus labrax, Sparus auratus , and Anguilla anguilla an artificial feeding (dry pellets) disturbs liver cells as revealed at ultrastructural level. In hepatocytes, anomalies consist of lipids storage (liposomes) considered as deviation in fatty acids metabolism. Moreover are observed cellular alterations (mitochondrial vacuolization, nuclear pycnosis) related to degenerative process. It is of great interest to understand wether liver modifications are just a reaction to an unbalanced feeding or a true trophic pathology.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Natural populations; Fish culture; Lipids; Fatty acids; Cytology; Ultrastructure; Cells; Diseases; Pellet feeds; Metabolism; Liver; Artificial feeding; Nutrition disorders.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1250.pdf

Virus diseases in temperate and tropical farming fish: State of current knowledge.
Provedor de dados: 5
Autores: Hill, B.
It is over 30 years since the development of fish tissue cultures led to the first confirmation of a viral infection in fish. Since that time, tissue cultures and, more usually, monolayer cell cultures, have been developed from a large number of fish species and have enabled the isolation from a large number of fish species and have enabled the isolation and study of 30 or so viral infections of fish, predominantly those of freshwater, catadromous and anadromous species, and particularly temperate species in the northern hemisphere. However, evidence for numerous other viral infections in fish has also been obtained without successful virus isolation through the visualisation of virus particles by electron microscopy or through experimental transmission of...
Tipo: Text
Palavras-chave: Tropical environment; Fish diseases; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1502.pdf

Marine larval fish rearing
Provedor de dados: 5
Autores: Arnold, C.
Various methods of producing juvenile finfish will be discussed. This includes the intensive production in controlled environments as well as extensive pond production. Factors important to survival such as temperature, salinity, pH, water quality, bacteria and parasites, density, food types and food density as well as information on food and food production will be given.
Tipo: Text
Palavras-chave: Fish culture; Aquaculture development; Aquaculture techniques; Rearing.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1445.pdf

Grow-out mariculture techniques in tropical waters: A case study of problems and solutions in Hong Kong.
Provedor de dados: 5
Autores: Wu, R; Lee, J.
Raft culture is practised and trash fish is being used as feed in Hong Kong. Culture space is limited and most of the culture sites are over-crowded. Food conversion ratio is poor (about 10-15), grow-out mortality is high (30-50%) and fish kills caused by oxygen depletions, algal blooms and red tides occur frequently. Disease and water pollution are also problems.
Tipo: Text
Palavras-chave: Sparidae; Pisces; Indicator species; Diseases; Water pollution; Cage culture; Artificial feeding; Food fish; Oxygen depletion; Mortality; Growth; Stocking density; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1427.pdf

The sexuality of cultured hermaphroditic fish species: Analysis of morphological and endocrinological features in a protogynous hermaphrodite, Epinephelus microdon , as a basis for further research to control reproduction in the grouper
Provedor de dados: 5
Autores: Debas, L; Fostier, A; Fuchs, Jacques; Weppe, M; Nedelec, Georges; Benett, A; Cauty, C; Jalabert, B.
The Polynesian grouper, Epinephelus microdon , was chosen as an experimental model in order to investigate about factors controlling sexuality in groupers.
Tipo: Text
Palavras-chave: French Polynesia; Epinephelus microdon; Sex ratio; Sexual maturity; Sex hormones; Sex determination; Sex; Fish culture; Endocrinology; Reproduction; Sex reversal; Animal morphology.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1439.pdf

Pisciculture et environnement au Danemark
Provedor de dados: 5
Autores: Tesson, E.
The author presents a brief picture of Danish freshwater fish breeding and its water legislation (laws and sanctions), including environmental impacts and quality of aquatic products.
Tipo: Text
Palavras-chave: Denmark; Environmental impact; Water quality; Legislation; Fish culture.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1327.pdf

Domestication of new species and sustainable development in fish culture
Provedor de dados: 5
Autores: Fontaine, Pascal; Legendre, Marc; Vandeputte, Marc; Fostier, Alexis.
How may fish domestication participate in sustainable development of aquaculture? The development of fish farming currently compensates for the stagnation of fishery catches while the market demand continues to increase. The development of fish farming relies on an active diversification of farmed fish species. A diversification based on the farming of native species could reduce the environmental impact of fish culture and could better fit to needs of local markets. Such development could also favour a more integrated local economy. In this context, the building of a generic approach for multi-species domestication is required to optimise the use of the technical and financial means available for fish culture diversification.
Tipo: Text
Palavras-chave: Sustainable development; Fish culture; Domestication; Diversification.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6557.pdf

Maturation and spawning of tropical and subtropical marine finfish by environmental manipulations
Provedor de dados: 5
Autores: Roberts Jr, D.
Circannual, diel, and lunal periodic mechanisms in naturally reproducing stocks of tropical and subtropical fishes are reviewed. Manipulations of biological clocks, used to control reproduction in captive broodstocks, are detailed. Experiments to induce controlled maturation and spawning in fishes either test efficacy of changing environmental conditions (regimes), or constant environmental conditions (controlled). Data have been generated in experimental/scientific studies, as well as applied research. Effects of controlled environmental regimes on serum steroids, gametogenesis, spawning, fry performance and egg quality are summarized for selected members of Centropomidae, Serranidae, and Sciaenidae.
Tipo: Text
Palavras-chave: Sciaenidae; Serranidae; Centropomidae; Fish culture; Controlled conditions; Sexual maturity; Photoperiods; Fish eggs; Gametogenesis; Steroids; Animal reproductive organs; Brood stocks; Marine fish; Spawning; Sexual reproduction.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1437.pdf

Evaluation de l'effet de l'environnement et de l'alimentation sur l'apparition d'anomalies de développement chez l'alevin de bar (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Menu, Bruno; Robin, Jh; Gouillou-coustans, Marie-francoise.
Larvae from a natural spawn of sea bass were distributed into 3 larval rearing lines in 2 distant sites, after simulated or true transportation. The specific rearing methods in the specific rearing environment of each laboratory were used :starvation under darkness for 160 degrees days and first feeding on Artemia (PP) in the Mediterranean laboratory of Palavas;first feeding on rotifers at 75 degrees days in the laboratory of Brest (Brittany) in 250 liters (BB) tanks or 35 liters tanks (Bb) of a separate rearing line. In the 250 liters tanks in Brest, 2 additional treatments before first feeding on Artemia were tested :starvation up to 160 degrees days under darkness with no bubbling (BP);starvation up to 160 degrees days under continuous illumination with...
Tipo: Text
Palavras-chave: Pisciculture; Élevage larvaire; Malformations; Effets de l'environnement; Alimentation; Fish culture; Larval rearing; Abnormalities; Environmental effects; Diet.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00272/38284/36472.pdf

Concevoir des structures pour l'élevage des poissons en mer
Provedor de dados: 5
Autores: Priour, Daniel.
The quick evolution of fish farming in Europe, and its development towards the open sea needs suitable farming tools. These tools must withstand the difficult sea states, but they must be easy to use, well adapted to the fish farming and not too much expensive. This book helps the design of such tools. It defines the solicitations of the sea on all the structures, and presents rules and methods to control these solicitations. Here, a structure is composed of a rearing support, a mooring system and equipments. This book describes these components, class them and gives lists of providers. The rearing support can be a cage, a group of cages or a boat. The support can float or to be submersible. The mooring system can be made up ropes, chains, anchors,...
Tipo: Text
Palavras-chave: Aquaculture equipment; Mooring systems; Anchoring; Aquaculture techniques; Structures; Sea water; Life support systems; Aquatic environment; Cage culture; Marine technology; Rearing; Fish culture.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/1995/rapport-1667.pdf

Pisciculture et gestion des bassins versants: problemes actuels et reflexions prospectives
Provedor de dados: 5
Autores: Leynaud, G.
This paper analyses the impact of fish breeding on watersheds (water quality) through a better knowledge by studies leading to a better legislation and influence on government services.
Tipo: Text
Palavras-chave: France; Ecosystems; Watersheds; Fish culture.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1334.pdf

Effects of temperature on growth and metabolism in a Mediterranean population of European sea bass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Person, Jeannine; Mahe, Kelig; Le Bayon, Nicolas; Le Delliou, Herve.
Growth and metabolism of juvenile European sea bass of a Western Mediterranean population were assessed at six constant temperatures (13, 16, 19, 22, 25 or 29 degreesC) in an 84-day trial. Duplicated groups of 84 fish (initial weight 80 I g) were held under O-2-concentrations close to saturation (87 mg l(-1)) and were fed to satiation. Mass gain increased as temperature increased from 13 to 25 degreesC. At 25 and 29 degreesC, growth was similar up to day 72, but a 6% decrease was observed by day 84 at 29 degreesC. Days 0-84 specific growth rates (SGR) were 0.45%,1.29% and 1.21% day(-1) at 13, 25 and 29 degreesC, respectively. The estimated temperature (7) for maximum SGR was 26 degreesC (SGR = 1.715 - 0.322T + 0.022T(2) - 4.233e(-4)T(3)). Feed intake (FI)...
Tipo: Text
Palavras-chave: Oxygen consumption; Fish culture; Thermal requirement; Metabolic rate; Feeding.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-626.pdf

Marine cage fish farming
Provedor de dados: 5
Autores: Espeut, P.; Harache, Yves; Lemarie, Gilles; Ricard, Jean-marc.
Marine capture fisheries in Jamaica is primarily artisanal in nature ansd is conducted maiinly by fishermen operating from canoes. Approximately 95% of these fishermen operate on the coastal shelf and its associated banks. The commercial species harvested comprise bottom-dwelling, coral reef species and free swimming species of finfish. Other fishery resources of commercial value include marine shrimp, conch and lobsters. Catch statistics are not available for all species, but the Department of Fisheries reports a slight decline in fishery production with production decreasing from 16 milion lbs in 1990, despite the fact that fishing efforts have doubled. Over this period the number of registered fishermen has grown from 12 000 to 16 000, al of whom are...
Tipo: Text
Palavras-chave: Aquaculture equipment; Cage culture; Rearing; Marine technology; Fish culture; Jamaica.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/rapport-1918.pdf

The effect of water pH on the incubation and larviculture of curimbatá Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)
Provedor de dados: 83
Autores: Reynalte-Tataje,David Augusto; Baldisserotto,Bernardo; Zaniboni-Filho,Evoy.
Different pH levels of water in the incubation and larviculture of 'curimbatá' (Prochilodus lineatus) were tested to evaluate the effect of this variable on the survival and development of eggs and larvae. During incubation, pH of 5.0, 6.0, 7.0, 8.0, and 8.5 was tested. To observe the effects of pH on larvae with different hatchery histories, the following experimental design was utilised (pH incubation - pH larviculture): L 6-6; L 6-7; L 7-6; L 7-7; L 7-8; L 8-7; L 8-8; L 8.5-7, and L 8.5-8.5. At pH 5.0 and four hours after incubation, an almost total mortality of incubated eggs was seen. Eggs incubated at pH 6.0 to 8.5 had similar fertilization and survival rates at the end of incubation, although eggs and larvae incubated at pH 6.0 had a smaller...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish culture; Fish larval physiology; Fish eggs physiology; Hatchery; Water quality.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100179

Présentation du conjoint d'introduction de mesure de maintien et d'augmentation des ressources halieutiques
Provedor de dados: 20
Autores: Coly, K.
En procédant au lancement du programme d'immersion des récifs artificiels le 24 juin 2002 lorsque le projet conjoint d'introduction de mesures de maintien et d'augmentation des ressources halieutiques dans la zone côtière du Sénégal entrait dans sa phase active, le ministre des pêches d'alors avait conscience que bien avant ce projet. La fédération sénégalaise de pêche sportive était résolument engagée à côté d'autres institutions.
Tipo: Report
Palavras-chave: Saline water; Salinity effects; Fee fishing; Fish; Fish culture; Artificial reefs; Habitat improvement; Fish; Fish culture; Saline water; Artificial reefs; Habitat improvement; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_16376; Http://aims.fao.org/aos/agrovoc/c_25395; Http://aims.fao.org/aos/agrovoc/c_3455.
Ano: 2004
URL: http://hdl.handle.net/1834/1714

Importancia de los lípidos en la reproducción y ontogenia del pez blanco de Pátzcuaro (Chirostoma estor estor)
Provedor de dados: 20
Autores: Aparicio, B.
Para producir larvas de peces con buenos rendimientos, se deben conocer los requerimientos nutricionales de la especie, particularmente en los primeros estadios larvarios. Además, se sabe que la nutrición de los reproductores influye directamente en la calidad de las larvas debido, principalmente, a la cantidad y calidad de lípidos que son transferidos desde la gónada hacia los huevos. El objetivo de este trabajo fue analizar la composición de lípidos en huevos, embriones y larvas de pez blanco de Pátzcuaro (Chirostoma estor estor) con el fin de establecer las bases de los requerimientos nutricionales de lípidos durante el desarrollo larvario del pez blanco. También se determinaron los ácidos grasos en tejidos de reproductores (cerebro, gónada, hígado,...
Tipo: Theses and Dissertations
Palavras-chave: 1079; Lipids; Reproduction; Fish culture; Fish eggs; Embryos; Fish culture; Lipids; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4362; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/3465

Creación de un banco de progenitores de Róbalo Centropomus undecimalis, Bloch. Evaluación de alimentos artificiales
Provedor de dados: 20
Autores: Reyes, R.; Ramos, D.; Fraga, I.; Galindo, J.; Ortega, N.
Feeding is one of the most critical aspects in fish broodstock establishment. The goal of this work is to evaluate the behavior of Centropomus undecimalis juvenile with two-compounded diet. Snook with initial average weight of 371.5 ± 77.8 g were kept during 10 month in 6 fibber glass tanks of 5 m3 capacity with 15 individual each. Two semimoist diet including fishmeal and fresh food were tested. The diet supplied were composed of minced meat fish machuelo (Ophistonema oglinum) and patao (Gerres spp) and small shrimp (so-called trilla) in the first five month and shrimp head and squid the rest of the time. At the beginning of this experience, growing was very slow with 15.33 g/month and food conversion of 6.5 mean while average weight of 26.6 g/month and...
Tipo: Proceedings Paper
Palavras-chave: Fish culture; Brood stocks; Feeding experiments; Balanced diets; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 2004
URL: http://hdl.handle.net/1834/1947

Cultivable fish seeds in Nigeria coastal waters: A research survey( second phase: 1986 -1989.
Provedor de dados: 20
Autores: Ezenwa, B.I.; Alegbeleye, W.O.; Anyanwu, P.E.
The first phase of the project (1978 –19850 on fish seed abundance in Nigerian coastal waters was completed and published in 1985 proceedings of Fisheries Society of Nigeria (FISON).  The second phase (1986 –1989) explored further, breeding grounds, nursery and schooling areas and traditional fishing gears used by local fishermen in the collection of seeds.  An assessment is made of the destructive effects of industrial pollutants, oil installations, erosion, modern coastal developments, and tides in the distribution and abundance of seeds within the estuaries, creeks lagoons coastal rivers and their tributaries.  Analysis of data collected showed a drastic reduction of an estimated 100 million fish seeds, Ezenwa et al (1985) to 51.7 million at the end of...
Tipo: Report
Palavras-chave: Fish culture; Seed production; Fish culture; Seed production; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_6937.
Ano: 1990
URL: http://hdl.handle.net/1834/2412

Le thon rouge (Thunnus thynnus thynnus L. 1758) des eaux tunisiennes  Etats des lieux, pêche et activités d’engraissement
Provedor de dados: 20
Autores: Hattour, A.
L’engraissement du thon rouge a connu un regain d’intérêt depuis le boom économique japonais i.e. vers le milieu des années 70. A cette époque les projections ont mis en évidence que la production mondiale ne suffirait plus à satisfaire le marché japonais. C’est ce constat qui a amené les grandes firmes japonaises à réfléchir sur l’engraissement du thon rouge. Cette technologie fût exportée en Espagne où l’activité a démarré effectivement au début des années 1990 pour atteindre son apogée vers les années 1996-1997. Plusieurs pays méditerranéens ont suivi le pas de l’Espagne à l’image de la Croatie, Malte, Chypre, Italie, etc., En Tunisie, pendant les six dernières années (2003-2008) l’activité d’engraissement du thon rouge (BFT) a atteint voire dépassé...
Tipo: Journal Contribution
Palavras-chave: Purse seines; Cages; Fish culture; Tuna; Environmental impact.
Ano: 2011
URL: http://hdl.handle.net/1834/4735

Plan Directeur de développement forestier: pêche et aquaculture continentales
Provedor de dados: 20
Autores: Diadhiou, A.; Diouf, P. S.; Le Reste, L.; Bousso, T.; Kebe, M.; Gaye, A. B.
1. DIAGNOSTIC SUR L’ETAT D’EXPLOITATION, LA REGLEMENTATION ET L’AQUACULTURE. 2. RECOMMANDATIONS. 2.1. Etat d’exploitation des ressources 2.1 .l. Fleuve Sénégal 2.1.2. Sine Saloum 2.1.3. Haute Gambie 2.1.4. Casamance 2.15. Anambé 2.2. Equipement des pêcheurs 2.3. Infrastructures 2.4. Structures d’encadrement 2.5 Statistiques 2.6. Réglementation 2.7. Aquaculture 2.7.1. Pisciculture 2.7.2. Crevetticulture 2.7.3. Ostréiculture 2.8. Recherche 3. PROJETS
Tipo: Other
Palavras-chave: Aquaculture; Maritime legislation; Legislation; Fishery statistics; Artisanal fishing; Fish culture; Fishery regulations; Oyster culture; Shrimp culture; Aquaculture; Fish culture; Legislation; Oyster culture; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4253; Http://aims.fao.org/aos/agrovoc/c_5483.
Ano: 1992
URL: http://hdl.handle.net/1834/4086

Sharing experinces on mariculture development with stakeholders
Provedor de dados: 20
Autores: Jiddawi, N.S.; Mmochi, A.J.
Communication on the development of mariculture activities in Zanzibar, and how the Institute of Marine Sciences in collaboration with other stakeholders are working hard in the program to improve the livelyhood of local people.
Tipo: Journal Contribution
Palavras-chave: Marine aquaculture; Aquaculture; Marine fisheries; Fish culture; Mariculture.
Ano: 2004
URL: http://hdl.handle.net/1834/203

Fish culture potential and biodiversity conservation in the Cameroon coastal zone
Provedor de dados: 20
Autores: Gabche, C.E.; Folack, J.; Chiambeng, G.V.
Ministry of Scientific and Technical Research, Agricultural Research Institute for Development Research Station for Fisheries and Marine Sciences
Tipo: Proceedings Paper
Palavras-chave: Biodiversity; Coastal zone; Fish culture.
Ano: 2000
URL: http://hdl.handle.net/1834/729

Manual de métodos parasitológicos e histopatológicos en piscicultura
Provedor de dados: 20
Autores: Keim, Albert.
Recientes problemas provocados por epiemias de infecciones de Ichthyophthirius multifiliie en la cría de bagre negro (Rhandia sapo) cultivado por el Departamento de Acuicultura del INAPE de Uruguay, y el conocimiento de que todos los piscicultores tienen problemas con los parásitos, constituyeron la base y antecedente para el inicio de un programa de investigaciones parasitológicas. Este programa incluyó. 1) Disección de bagres capturados en Laguna de Sauce y colecta de parásitos. 2) Disección de bagres cultivados en el Laboratorio y en los estanques de INAPE, y colecta de parásitos. 3) Identificación de los parásitos recolectados. 4) Elaboración de un manual que recopila los métodos más comunmente utilizados en parasitología e histopatología en la...
Tipo: Report
Palavras-chave: Fish diseases; Parasitic diseases; Fish culture; Parasitology; Histopathology; Manuals; Ichthyophthirius.
Ano: 1982
URL: http://hdl.handle.net/1834/4913

Morphological development of the mouth and improvement in feeding ability in the early larval stages of red porgy, Pagrus pagrus (L.)
Provedor de dados: 20
Autores: Aristizabal, E.O.
The appearance, ossification and growth of cartilaginous structures of the mouth in early larval stages of laboratory reared red porgy Pagrus pagrus, were examined. At the time of mouth opening, red porgy larvae are equipped with the fundamental components of the oral cavity to allow the sucking motion for acquiring food. During the initial feeding stage, from day 5 after hatching (AH) to day 7 AH, the hyoid and lower branchial archs were completed, and the head length and other structural elements, like the ceratohyal-epihyal cartilage, increased rapidly. These events intensified sucking mechanisms by increasing the amount of ingested rotifers. After day 13 AH, the presence of the bony premaxilla and angular, the ossification of the Meckels cartilage and...
Tipo: Journal Contribution
Palavras-chave: Marine aquaculture; Fish culture; Fish larvae; Osteology; Fish culture; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 2005
URL: http://hdl.handle.net/1834/1560

Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae).
Provedor de dados: 20
Autores: Aristizabal, E.O.
Knowledge of the life history of fish larvae is of practical importance to understand variations in the survival rate not only for cultivated fish but also for fishery biology studies. With the aim of recognizing critical changes during the first days of life of red porgy larvae, the oxygen consumption, growth, and food utilization were studied. After hatching, the larvae were transferred to two 400 L fiberglass tanks with microalgae (Nannochloropsis oculata)and enriched rotifers (Brachionus plicatilis)as initial food. During the incubation and larval rearing, water temperature was kept at 18.0 ± 0.5ºC and salinity ranged from 33.0 to 34.0 psu. Results indicate a decrease in larval growth between day 3 and 4 after hatching, when larvae opened their mouths,...
Tipo: Journal Contribution
Palavras-chave: Fish culture; Marine fish; Fish larvae; Metabolism; Oxygen consumption; Fish culture; Metabolism; Fish larvae; Oxygen consumption; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4769; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5478.
Ano: 2006
URL: http://hdl.handle.net/1834/1557

Piscicultura para productores
Provedor de dados: 20
Autores: Carnevia, D.; Speranza, G.
Manual de piscicultura útil para toda persona física o jurídica, interesadas en desarrollar esta actividad en el país, contribuyendo de esta manera con la reactivación productiva no tradicional, mediante el cultivo de animales acuáticos en aguas interiores o en zonas costeras aptas para ello. Se presenta además una actualización del marco normativo vigente para el desarrolllo de la piscicultura en el Uruguay.
Tipo: Journal Contribution
Palavras-chave: Fish culture; Pond culture; Fish ponds; Agropisciculture; Aquaculture facilities; Freshwater aquaculture; Marine aquaculture; Fish culture; Fish ponds; Agropisciculture; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2929; Http://aims.fao.org/aos/agrovoc/c_212.
Ano: 2003
URL: http://hdl.handle.net/1834/1581

Cultivo de tilapia (Oreochromis niloticus) a pequeña escala ¿alternativa alimentaria para familias rurales y periurbanas de México?
Provedor de dados: 20
Autores: Vega-Villasante, F.; Cortés-Lara, M.del C.; Zúñiga-Medina, L.M.; Jaime-Ceballos, B.; Galindo-López, J.; Basto-Rosales, M.E.R.; Nolasco-Soria, H.
There is a global trend towards intensification of aquaculture-based systems, however a large portion of world production from aquaculture is still in small-scale "rural type" and extensive systems. The term “rural aquaculture” has been used to distinguish, from other production systems, the culture of aquatic organisms by families through extensive or semiintensive systems, for home consumption or partial marketing. Studies conducted in various regions of Mexico suggested that rural aquaculture of tilapia could be an alternative activity, able to dampen the demand and reduce pressure on natural resources. This paper analyzes the culture of tilapia considering the minimum management, with low fish density and low water exchange with the intention to...
Tipo: Journal Contribution
Palavras-chave: Small scale aquaculture; Fish culture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 2010
URL: http://hdl.handle.net/1834/3520

Water quality in recirculating aquaculture systems (ras) for arctic charr (salvelinus alpinus L.) culture.
Provedor de dados: 20
Autores: Isla Molleda, M.
Recirculating aquaculture systems (RAS) for fish culture have been used for more than three decades. The interest in RAS is due to their have advantages such as greatly reduced land and water requirements in places where the water resources are limited; but the RAS have also disadvantages like the deterioration of the water quality if the water treatment processes within the system are not controlled properly. The water quality problems in RAS were associated with low DO and high fish waste metabolite levels in the culture water. The objective of this study was to compare water quality in a RAS with water quality in a Limited Reuse System (LRS) for Arctic charr culture taking into account the oxygen demands of the fish; the metabolites production by the...
Tipo: Preprint
Palavras-chave: Water quality; Fish culture; Water quality; Fish culture; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 2008
URL: http://hdl.handle.net/1834/3102

Requerimientos nutricionales en juveniles de Anguila (Anguilla rostrata): Evaluación de relaciones proteína/energía en la dieta
Provedor de dados: 20
Autores: Fraga, I.; Galindo, J.; Jaime Ceballos, B.
Protein and the energy of the food are important for the growth and nutritional composition of the eel meat. These factors of the food can also affect ammonia excretion that has a marked interest in aquaculture and in the environmental impact. A completely randomized experimental design was developed during 60 days at laboratory scale, to evaluate the effect of different protein/energy ratios (P/E) on growth, oxygen consumption ratios and ammonia production of eel juvenile (Anguilla rostrata) with 0.63 ± 0.02 g of initial weight. An interaction of first grade was evidenced between protein levels and energy of the diets. The eels require growing diets containing protein levels between 45 and 55% and P/E ratios from 27.4 to 29.6 g of protein/Mj. The...
Tipo: Proceedings Paper
Palavras-chave: Diets; Food consumption; Fish culture; Food consumption; Fish culture; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 2003
URL: http://hdl.handle.net/1834/1954

Biología reproductiva del lenguado Paralichthys orbignyanus: Maduración y potencial reproductivo en ejemplares cultivados y salvajes
Provedor de dados: 20
Autores: Radonic, M.
Intensive culture of teleost fish introduces changes over the environmental conditions found in their spawning grounds, leading to reproductive dysfunctions. The manipulation of these parameters (photoperiod, temperature) represents a common technique to alter the reproductive rhythms and enhance the spawnings in terms of quality and quantity. Nevertheless, for each species some modifications or adjustments have to be done according to their reproductive strategies. The advantages of manipulating those parameters are primarily to schedule the spawning for a desired period of time and to obtain good quality and quantity eggs. Many factors such as tank dimension, light intensity, nutritional status and husbandry of broodfish and minimum stress level have...
Tipo: Theses and Dissertations
Palavras-chave: Fish culture; Marine aquaculture; Reproduction; Fecundity; Wild spawning; Brood stocks; Fish culture; Aquaculture; Paralichthys orbignyanus.
Ano: 2011
URL: http://hdl.handle.net/1834/4505

Maduración y desove del pargo amarillo Lutjanus argentiventris (Peters, 1869) en condiciones controladas de temperatura y fotoperíodo
Provedor de dados: 20
Autores: Martínez, R.A.
El cultivo de peces marinos ha atraído considerable atención en la última década, experimentando un gran auge en años recientes. Esto se debe principalmente al desarrollo y optimización de la tecnología de cultivo en jaulas, como también al mejoramiento de las técnicas de producción de juveniles, lo que ha incrementado el número de especies para las cuales existen cultivos de orientación comercial. En las circunstancias actuales, para que el cultivo de peces sea rentable es necesario controlar todas las fases del ciclo vital de la especie. En el presente trabajo se abordó esta problemática a través de estudios enfocados a la maduración gonadal y desove a través de tratamientos de temperatura y fotoperíodo denominados no invasivos. En el primer experimento...
Tipo: Theses and Dissertations
Palavras-chave: 959; Temperature; Lipids; Photoperiods; Marine fish; Fish culture; Fish culture; Temperature; Lipids; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_7657; Http://aims.fao.org/aos/agrovoc/c_4362.
Ano: 2003
URL: http://hdl.handle.net/1834/3445

Desove en cautiverio y calidad de los huevos y larvas del besugo, Pagrus pagrus (L.)
Provedor de dados: 20
Autores: Aristizabal, E.O.
Spontaneous spawning of red porgy was achieved in captivity by using photoperiod and temperature control systems along the year. During a four-month reproduction period females released in average about 0.2 times their own body weight in oocytes with an energy content of 5.71 J mg-1 wet weight. A total of 28.8 x 106 eggs and approximately 200 g of viable eggs (wet weight) per female kg were obtained. The eggs and larvae quality in terms of hatching and larval survival rates experienced a significant variation during the spawning season ranging between 0%-92% and 0.3%-33.2% respectively. Comments in reference to the probable causes of these variations and the need of carrying on with this line of research are presented.
Tipo: Journal Contribution
Palavras-chave: Fish culture; Marine aquaculture; Spawning seasons; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 2006
URL: http://hdl.handle.net/1834/1569

Etude technico-économique comparative de la pêche à la palangre améliorée utilisant le vire-ligne et de la pêche à la palangre traditionnelle
Provedor de dados: 20
Autores: Bakhayokho, M.; Kébé, M.
Dans le cadre des études de faisabilité visant à l'introduction de la palangre améliorée et du vire -ligne dans la pêche artisanale sénégalaise. Des essais ont été menés au CRODT les résultats ont montrés que la techniques était adaptable au Sénégal et la palangre est largement utilisée au Sénégal
Tipo: Book
Palavras-chave: Fee fishing; Females; Fish culture; Fishery biologists; Fishery boundaries; Fish diseases; Fish culture; Females; Fish diseases; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_15969; Http://aims.fao.org/aos/agrovoc/c_2920.
Ano: 1992
URL: http://hdl.handle.net/1834/2520

Bioenergética del besugo Pagrus pagrus.
Provedor de dados: 20
Autores: Aristizabal, E.O.
The utilization of the energy of food by red porgy (Pagrus pagrus Linnaeus, 1758) from the Argentine Sea (SW Atlantic) was studied. From the energetic point of view, it is proposed that the strategy of patitioning, utilization and storage of the energy of food, is an indicator of the organism response to the environmental conditions. The main objective was to know the proportion of the energy of food derived to the different components of the bioenergetics budget. In order to estimate the monthly energy investment in reproductive growth, chemical analysis of gonads from fishes caught by the fishery fleet and from laboratory studies were performed. Two indexes were used to calculate the energy investment in female ovaries: the proportion of net daily energy...
Tipo: Theses and Dissertations
Palavras-chave: Fish culture; Bioenergetics; Eggs; Fish larvae; Food consumption; Energy budget; Metabolism; Oxygen consumption; Fish culture; Eggs; Food consumption; Metabolism; Fish larvae; Oxygen consumption; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_4769; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5478.
Ano: 2003
URL: http://hdl.handle.net/1834/1466

Crecimiento del lenguado Paralichthys orbignyanus (Valenciennes, 1839) en condiciones de cultivo
Provedor de dados: 20
Autores: Fraysse, C.; Petraroia, A.
Mariculture in Argentina has expanded over the last years. Flounders of the Paralichtydae family are a very important fishery resource due to their abundance, meat quality, and high market price. The first mass production of juveniles of Paralichthys orbignyanus in captivity was successfully performed in 2002 at the Estación Experimental de Maricultura (EEM), Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata. Moreover, it has got potential as a species for cultivation, due to its behaviour in captivity, good growth, survival and feed conversion rates. In this study, the parameters that affect this flounder cultivation under controlled conditions and in closed recirculating seawater system, are presented. Temperature, pH, and...
Tipo: Theses and Dissertations
Palavras-chave: Fish culture; Controlled conditions; Recirculating systems; Juveniles; Marine aquaculture.
Ano: 2013
URL: http://hdl.handle.net/1834/5445

Comment formuler et fabriquer des aliments artificiels pour la pisciculture.
Provedor de dados: 20
Autores: Blé, M.C.; Kervarec, F.; Alla, Y.L.
En aquaculture, l'alimentation représente plus de 50% du coût total de la production. L'apport d'aliment constitue ainsi un maillon essentiel de l'activité aquacole. Une bonne alimentation permet d'optimiser la croissance des poissons et de minimiser les rejets qui des sources de pollution du milieu d'élevage. En élevage intensif, l'aliment quasi-exclusivement apporté sous forme d'aliments composés dans lesquels doit être incorporé l'ensemble des nutriments indispensables à la bonne croissance des poissons. Ce document présente les principales étapes de la formulation et de la fabrication d'un aliment artificiel pour les poissons d'élevage.
Tipo: Journal Contribution
Palavras-chave: Feed composition; Fish culture.
Ano: 2008
URL: http://hdl.handle.net/1834/5747

L'interaction hôte-parasite en aquaculture : cas du charax, diplodus puntazzo (pisces, sparidae)  infesté par myxidium leei (myxozoa)
Provedor de dados: 20
Autores: Tarer, V.; Marques, A.; Raymond, J. Ch.
Un échantillonnage de poissons parasités (Diplodus puntazzo) en provenance d’une firme aquacole située au Sud-est de la Corse (Ouest méditerranéen) montre une infestation due à un Myxidium leei. Le parasite envahit l’épithélium intestinal causant amaigrissement du poisson et une forte mortalité. Les spécimens de plus de 16 cm de longueur totale étaient significativement moins infestés. Toutefois, l’infestation ne montre pas de différence significative entre mâles et femelles quelle que soit la taille des spécimens. Quelques paramètres hématologiques ont été utilisés pour montrer le rôle du parasite dans cette maladie de poissons et statuer sur l’interaction hôte-parasite.
Tipo: Journal Contribution
Palavras-chave: Fish diseases; Interactions; Parasitic diseases; Hosts; Aquaculture; Parasitism; Fish culture.
Ano: 2000
URL: http://hdl.handle.net/1834/4291

The immune response of tilapia Oreochromis mossambicus and its susceptibility to Streptococcus iniae under stress in low and high temperatures
Provedor de dados: 20
Autores: Ndong, D.; Chen, Yu Yuan; Lin, Yu Hung; Baskaralingam, V.; Chen, Jiann Chu.
Mozambique tilapia Oreochromis mossambicus acclimated to 27 °C were then held at 19, 23, 27 (control), 31 and 35 °C, and were examined for non-specific cellular and humoral responses after 12–96 h. Total leucocyte count decreased significantly when fish were transferred to 19 and 23 °C after 48 and 96 h, and when transferred to 35 °C over 12–96 h, respectively. Respiratory burst decreased significantly when fish were transferred to 19, 31 and 35 °C over 24–96 h, whereas phagocytic activity and phagocytic index decreased significantly when fish were transferred to low temperatures (19 and 23 °C) and high temperatures (31 and 35 °C) over 12–96 h. Lysozyme activity decreased significantly when fish were transferred to 19 °C after 12–96 h, but increased...
Tipo: Journal Contribution
Palavras-chave: Immunology; Fish culture; Fish diseases; Temperature effects; Aquaculture; Biological stress; Immunology; Fish culture; Aquaculture; Fish diseases; Http://aims.fao.org/aos/agrovoc/c_3808; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_2920.
Ano: 2006
URL: http://hdl.handle.net/1834/2614

Effets de l’incorporation de la farine de tomate dans l’alimentation du Tilapia du nil (oreochromis niloticus, l., 1758) en élevage  dans les eaux géothermales du sud Tunisien
Provedor de dados: 20
Autores: Azaza, M.S.; Mensi, F.; Imouri Toko, I.; Dhraief, M.N.; Abdelmouleh, A.; Brini, B.; Kraiem, M.M.
Afin de réduire le coût des aliments aquacoles, nous avons procédé à la substitution d’une matière première végétale importée: le tourteau de soja (TS) par un sous produit local : la farine de tomate (FT). L’expérience est menée sur des juvéniles de Tilapia (Oreochromis niloticus) monosexe mâle ayant un poids moyen initial de 20,54 ± 0,08 g. (poids moyen ± ES), et elle consiste à tester 4 régimes alimentaires isoprotéiques (27 % de protéines) et isoénergétiques (17 KJ/g) contenant différents taux de farine de tomate: 0 % (aliment témoin), 10 %, 20 % et 30 % noté respectivement A0, A10, A20 et A30. Ces aliments sont testés, durant 75 jours.  A la fin de l’expérience les poids moyens finaux ont atteint des valeurs comprises entre 98,62 g et 129,77 g selon...
Tipo: Journal Contribution
Palavras-chave: Diets; Digestibility; Feed efficiency; Feeding experiments; Fish culture; Growth; Marine aquaculture; Nutrition; Oreochromis niloticus; Http://aims.fao.org/aos/agrovoc/c_34687.
Ano: 2006
URL: http://hdl.handle.net/1834/4238

Essai d’acclimatation du tilapia du nil "Oreochromis niloticus"  dans la retenue du barrage Lebna (Cap bon, Tunisie)
Provedor de dados: 20
Autores: Derouiche, E.; Azaza, M.S.; Kraiem, M.M.
Ce travail consiste à tester l’acclimatation d’une espèce thermophile, le tilapia du Nil Oreochromis niloticus dans la retenue du barrage Lebna (Cap Bon), moyennant un système extensif de grossissement. Les résultats montrent que le tilapia introduit directement en pleine retenue a pu se maintenir et supporter les mauvaises conditions hivernales en adoptant une stratégie d’hibernation. Par ailleurs, avec le retour des conditions favorables (T&gt;20°C), ce Cichlidé a montré une bonne condition, une meilleure croissance qu’en élevage dans les bassins et cette fraction de population a pu proliférer.
Tipo: Journal Contribution
Palavras-chave: Acclimatization; Brackishwater fish; Environmental conditions; Fish culture; Growth; Hibernation; Population dynamics; Rearing; Water reservoirs; Testing; Tilapia.
Ano: 2009
URL: http://hdl.handle.net/1834/4494

Crecimiento y rendimiento en carne del Lenguado Paralichthys orbignyanus (Valenciennes, 1839) cultivado en Argentina
Provedor de dados: 20
Autores: Müller, M.I.; Radonic, M.; López, A.V.; Bambill, G.A.
The results of the final on-growing (500 g to 1 kg)of flounder Paralichthys orbignyanus under closed recirculated water systems and controlled conditions are presented. 22.5 percent of fish reached 1 kg alter 2.1 months of starting the on-growing trial. Sex ratio was 20.6 percent females and 79.4 percent males. Average length for females and males was 38.53 ± 4.58 cm TL and 32.52 ± 5.25 cm TL, respectively. Average body weight for females and males was 710.58 ± 262.95 g and 427.59 ± 203.01 g, respectively. Statistically significant differences were found for average length for sex (p0.01)and for average body weight for sex (0.01 0.05). Flesh yield was 43.1percent fillets without skin and 57percent fillets with skin. Flesh of cultivated flounder had a...
Tipo: Proceedings Paper
Palavras-chave: Fish culture; Marine fish; Growth rate; Feeding; Fish culture; Feeding; Growth rate; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_16130.
Ano: 2006
URL: http://hdl.handle.net/1834/1570

Cepario de microalgas marinas y producción inicial e intermedia de Nannochloropsis oculata (Eustigmatophyceae) en condiciones controladas de laboratorio
Provedor de dados: 20
Autores: López, A.V.; Bocanfusso, J.J.
Collection of microalgae strains and initial and intermediate production of Nannochloropsis oculata (Eustigmatophyceae) under controlled laboratory conditions. Microalgae, as primary producers of the marine trophic pyramid, make up the first link of the food chain in the aquatic environment. In aquaculture, they are the basis of the whole production of marine fish larvae food such as rotifera, copepods and artemias. Within the “Experimental Mariculture and Biology” Program, at the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), the culture technology of red porgy (Pagrus pagrus) and flounder (Paralichthys orbignyanus) that requires production of microalgae to obtain larvae and juveniles of both species is being developed. The first step...
Tipo: Journal Contribution
Palavras-chave: Algal culture; Controlled conditions; Fish culture.
Ano: 2013
URL: http://hdl.handle.net/1834/5507

Polyculture trial of mullets (Mugil spp) tilapia sp.,hemichromis sp. and elops sp.
Provedor de dados: 20
Autores: Anyanwu, P.E.; Awa, J.N.
Polyculture trial of selected cultivable fin fishes was conducted at the Institute’s experimental fish farm Ikoyi, Lagos from April 1983 to January 1984.  The species, Mugil spp; Tilapia spp; Hemichromis fasciatus and Elops lacerta gave a total annual production range of 1219 kg to 1441 kg per hectare (extrapolated).  Tilapia species had the highest growth potential constituting 80% of the total harvest.  Supplementary diet used was food left over (waste) from selected big hotels in Lagos.  Elops lacerta (predator) recorded the highest average body weight of 415.88g while the lowest weight 62.14g, was recorded for Mugil spp.  Tilapia spp and Hemichromis fasciatus had average body weights of 72.5g and 6.7 0g respectively.
Tipo: Report
Palavras-chave: Fish culture; Polyculture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 1988
URL: http://hdl.handle.net/1834/2390

Growth of Argentine silverside (Odontesthes bonariensis) stocked at low densities in two oligohaline shallow lakes (Buenos Aires province, Argentina)
Provedor de dados: 20
Autores: Espinach Ros, A.; Dománico, A.
Argentine silversides (Odontesthes bonariensis) stocked as fry (45 days old) at low densities in two oligohaline Pampasic shallow lakes (Buenos Aires province, Argentina) grew to legal harvest size (250 mm, total length) in one year, and averaged 403 mm in length and 500 g in weight after 25 months.
Tipo: Journal Contribution
Palavras-chave: Fish culture; Growth; Growth; Shallow water; Oligotrophic lakes; Fish culture; Growth; Growth; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2006
URL: http://hdl.handle.net/1834/2513

Primeras observaciones sobre el crecimiento de Bagre negro (Rhamdia sapo)
Provedor de dados: 20
Autores: Varela, Zoel; Fischer, Knud; Chediak, Gustavo.
Se describen las primeras experiencias llevadas a cabo con el fin de determinar tasas de crecimiento del bagre negro (Rhamdia sapo) en condiciones de cultivo. En una primera experiencia se sembraron alevines (10 - 50 g) a densidades entre 25.000 y 60.000 ejemplares por hectárea, densidades normalmente empleadas para las últimas fases de alevinaje. Se estableció la relación entre el tamaño inicial y la tasa específica de crecimiento (TEC) así como también se determinó el crecimiento diario absoluto para los distintos tamaños. En una segunda experiencia se sembraron peces (112 g) a densidades de 6.000, 8.000 y 10.000 ejemplares por hectárea para realizar pruebas de producción. Esta experiencia se llevó a cabo en las estaciones de otoño e invierno. El...
Tipo: Report
Palavras-chave: Growth rate; Fish culture; Freshwater aquaculture; Feed conversion rate.
Ano: 1982
URL: http://hdl.handle.net/1834/4914

The effect of broodfish rearing period and seasons on spawn weight and hatching rate of clarias gariepinus (Burchell) and heterobranchus longifilis (Val).
Provedor de dados: 20
Autores: Nwadukwe, F.O.; Ayinla, O.A.
Weekly spawn and hatching rates of Clarias gariepinus and Heterbranchus longifilis were determined in earthen ponds during the rainy and dry seasons. There was a significant increase in spawn weight from the 2nd to the 7th  week after stocking C. gariepinus brood fish (p&lt;0.05).  In H. longifilis; the increase in spawn weight was significant from the 4th to the 9th weeks (P&lt;0.05). A positive correlation was found between spawn weight and female broodfish weight from the 4th to the 9th weeks for both species. The best hatching rates were obtained during the 7th week for C. gariepinus, and in the 8th week for H. longifilis.  Rainy season trials gave better results in both species than in the dry season, while only C. gariepinus produced hatchable...
Tipo: Report
Palavras-chave: Fish culture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 1993
URL: http://hdl.handle.net/1834/2205

Broodstock management and induced spawning of flounder Paralichthys orbignyanus (Valenciennes, 1839)under a closed recirculated system
Provedor de dados: 20
Autores: Bambill, G.A.; Oka, M.; Radonic, M.; López, A.V.; Müller, M.I.; Boccanfuso, J.; Bianca, F.
The present study was conducted to determine the parameters regulating spawning performance of P. orbignyanus wild broodstock. The adaptation to captivity was successfully achieved with minimal stress levels. In three consecutive spawning seasons, the annual photothermal manipulation was not effective for the maturation and natural spawning of females although males were running. Females were HCG injected, releasing non fertilized eggs. Artificial fertilization was carried out after stripping the fish with a total production of 18,000 fertilized eggs in 2001 (egg diameter=800±10 µm), 55,300 in 2002 (egg diameter= 850±12 µm)and 1,635,000 fertilized eggs in 2003 (egg diameter 818.4 ±30.08 µm, oil drop 98.1 ±2.96 µm). For the study of the ovulationtime,...
Tipo: Journal Contribution
Palavras-chave: Fish culture; Marine fish; Brood stocks; Eggs; Induced breeding; Fish culture; Eggs; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502.
Ano: 2006
URL: http://hdl.handle.net/1834/1814

Efectos de temperatura y salinidad sobre el crecimiento de juveniles de besugo Pagrus pagrus (Linné,1758)(Actinopterygii; Perciformes) en sistemas de recirculación cerrada
Provedor de dados: 20
Autores: Suárez, J.
The growth and survival of juvenile red porgy, Pagrus pagrus, reared in captivity (mean body weigth 81.0 not equal to 37.24g), exposed to two different temperatures (18 degree and 22 degree C)and three salinities (21, 27 and 33 psu)during a 30 day period, were studied. Final survival rate was 100. in all treatments. The highest growth rate was reached at 18 degree C/33 psu with a value of 1.07 /day. There was an inverse trend in the growth rate between the two temperatures. Food consumption increased with the increase of salinity and temperature. The highest food consumption rate was 1.17. (18 degree C/33 psu). The relationships between protein efficiency ration (PER)and salinity were positive at 18 degree C and negative at 22 degree C. The highest values...
Tipo: Theses and Dissertations
Palavras-chave: Environmental effects; Fish culture; Food consumption; Growth; Juveniles; Recirculating systems; Survival; Marine aquaculture; Fish culture; Food consumption; Growth; Juveniles; Survival; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_25393; Http://aims.fao.org/aos/agrovoc/c_7538.
Ano: 2004
URL: http://hdl.handle.net/1834/2601

Au front, bulletin d'information du projet Evaluation et Gestion des Ressources halieutiques de la République du Sénégal
Provedor de dados: 20
Bulletin d'information du projet Evaluation et Gestion des Ressources Halieutiques au Sénégal
Tipo: Other
Palavras-chave: Fish culture; Fish consumption; Fish; Fish conversion factors; Fish catch statistics; Fishery management; Fishery biology; Fish; Fish culture; Fishery management; Fishery biology.
Ano: 2004
URL: http://hdl.handle.net/1834/1483

Aspectos biológicos y conductuales del estadio infectante de Caligus rogercresseyi Boxhall &amp; Bravo 2000 (Copepoda: Caligidae), en peces nativos y de cultivo de Chile
Provedor de dados: 20
Autores: Farias Aqueveque, D.R.
El impacto nocivo producido por Caligus rogercresseyi en los centros de cultivo de salmónidos en el sur de Chile ha ido en aumento, por lo que es necesario tener un mejor conocimiento de la especie para poder combatirla haciendo énfasis en la etapa infectante de ésta, el estadío copepodito. Este estudio aporta conocimientos biológicos y conductuales de éste estadío frente al estímulo de tres especies de hospederos; Salmo salar, especie de cultivo, y Eleginops maclovinus e Hypsoblennius sordidus, ambas especies nativas. Se realizaron tres experimentos, dos de ellos basados en los estímulos atractantes emanados del pez hospedero, controlados mediante la formación del filamento frontal de adhesión y respuestas conductuales frente a este estímulo mediante un...
Tipo: Theses and Dissertations
Palavras-chave: Fish culture; Ectoparasites; Fish diseases.
Ano: 2005
URL: http://hdl.handle.net/1834/4900

Performance of Clarias gariepinus in a polyculture with Oreochromis niloticus.
Provedor de dados: 20
Autores: Oladosu, G.A.; Ayinla, O.A.; Onuoha, G.C.; Needom, J.G.
A study of the performance of Clarias gariepinus (African Mudfish) in a polyculture with Oreochromis niloticus (Tilapia), integrated with broiler chicken production was carried at the African Regional Aquaculture Centre, Nigeria.  Three experimrntal treatments were utilized.  Treatment I was a polyculture of C. gariepinus and O. niloticus integrated with broiler chicken production, with application of supplemental feed to fish.  Treatment II was a repeat of treatment 1, except that no supplemental feed was applied to fish, while treatment III was a polyculture of the two fish species per se with application of supplemental feed to fish.  Results showed that the final individual weight, individual weight gain and recovery rate were best for C. gariepinus,...
Tipo: Report
Palavras-chave: Fish culture; Polyculture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918.
Ano: 1990
URL: http://hdl.handle.net/1834/2439

Atelier de Kayar
Provedor de dados: 20
Autores: Dioh, B.; Ndiaye, O.; Sané, K.; Diouf, P.S.
ATELIER DE FORMATION SUR L'APPLICATION DES LOIS ET REGLEMENTS AU CONTEXTE DE LA PECHERIE MARITIME DE KAYAR Introduction Dans le programme de conservation des écosystèmes marins et côtiers de I'Akique de I'Ouest du World Wide Fund for Nature (WWF), Kayar a été retenu comme site où des activités de terrain doivent être menées. Dans le but de former et de sensibiliser les acteurs chargés de I'application des lois et règlements relatifs à la pêche et ceux à qui cette réglementation s'applique, une séance de vulgarisation des lois et règlements régissant la pêche au Sénégal a été organisée le 26 juillet 2002 à Kayar. Aprés la cérémonie d'ouverture, Messieurs Ousmane NDIAYE, Chef de la division pêche artisanale à la Direction de l'océanographie et des pêches...
Tipo: Proceedings Paper
Palavras-chave: Fish consumption; Fish counters; Fish culture; Law of the sea; Licences; Fish culture; Licences; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4313.
Ano: 2002
URL: http://hdl.handle.net/1834/1709

Desarrollo de un banco de reproductores de Róbalo (Centropomus undecimalis, Bloch 1792): I. Manejo del alimento
Provedor de dados: 20
Autores: Fraga, I.; Reyes, R.; Ortega, N.; Regueira, E.; Font, R.; Bravo, A.
In order to establish the management methods in snook Centropomus undecimalis (Bloch, 1792) broodstock (initial average weight 960 g), during 18 month three phases were developed. Fishes were marked, measured, weighed and distributed in 5 m3 fiber glass tanks (stock density 1.3 kg/m3). In the first phase (3 month), different feeding schedules were applied: 1. feeding in alternate days; 2. feeding every day excluding weekends; 3. feeding twice a day. Before maturation phase and during three month, enriched semi humid food was supplied. Finally, during 12 month, artificial feed was supplied. The appetite dynamics in fishes was influenced by the feeding schedule applied. When food was offered in alternate days, higher consumption was observed. Females showed...
Tipo: Proceedings Paper
Palavras-chave: Fish culture; Feeding; Brood stocks; Fish culture; Feeding; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2838.
Ano: 2006
URL: http://hdl.handle.net/1834/2077

Preliminary results on the nutritional evaluation of omega-3-HUFA-enriched &lt;i&gt;Artemia&lt;/i&gt; nauplii for larvae of the sea bass, &lt;i&gt;Dicentrarchus labrax&lt;/i&gt;
Provedor de dados: 27
Autores: Van Ballaer, E.; Amat, F.; Hontoria, F.; Léger, P.; Sorgeloos, P.
Freshly hatched San Pablo Bay and Great Salt Lake &lt;i&gt;Artemia&lt;/i&gt; nauplii (omega-3-HUFA-poor) and enriched meta-nauplii (omega-3-HUFA-enriched)were compared to reference &lt;i&gt;Artemia&lt;/i&gt; nauplii (omega-3-HUFA-rich) as a food source for the larvae of the sea bass, &lt;i&gt;Dicentrarchus labrax&lt;/i&gt;. Significant differences in survival and biomass production between the treatments could be attributed to the omega-3-HUFA content of the food. A delayed mortality in fish larvae fed the Great Salt Lake &lt;i&gt;Artemia&lt;/i&gt; is suspected to be caused by a high level of alpha-BHC in this &lt;i&gt;Artemia&lt;/i&gt; source. Growth was not significantly different between the treatments, most probably due to the large variation in growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial feeding; Fish culture; Fish larvae; Nutritive value; Artemia salina; Dicentrarchus labrax [Bass].
Ano: 1985
URL: http://www.vliz.be/imisdocs/publications/261899.pdf

Development of a lipid-enrichment technique for &lt;i&gt;Artemia&lt;/i&gt; juveniles produced in an intensive system for use in marine larviculture
Provedor de dados: 27
Autores: Dhont, J.; Lavens, P.; Sorgeloos, P.
Although there exists an obvious inclination to replace live larval food by formulated feeds, &lt;i&gt;Artemia nauplii&lt;/i&gt; are still essential in the larviculture of marine fish species. So far, on-grown &lt;i&gt;Artemia&lt;/i&gt; are rarely used in larviculture although they offer several advantages over &lt;i&gt;Artemia nauplii&lt;/i&gt;: e.g. they contain a higher individual protein and energy content thus improving the fish larvae's energy budget; an equal amount of live food is reached with far less individuals thus a considerable saving of &lt;i&gt;Artemia&lt;/i&gt; cysts; their composition of (n-3) highly unsaturated fatty acids (HUFA) may easily be improved by applying enrichment techniques. This study deals with the development of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish culture; Fish larvae; Food organisms; Intensive culture; Lipids; Nutritive value; Artemia.
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2854

Variation in egg and larval quality in various fish and crustacean species
Provedor de dados: 27
Autores: Lavens, P.; Sorgeloos, P.
It is generally accepted, that a major constraint in the further development of marine fish and crustacean aquaculture, is the variable quality of eggs and larvae used for the hatchery-production of fry. Nonetheless, valid criteria to evaluate optimal egg quality have not been identified yet. Instead, particular indicators, are used, e.g. the fertilization and hatching rate, overall culture success during the first rearing period, etc., but these are not totally objective because hatchery-specific conditions may interfere. The biochemical composition of the egg may be one of the possible determinants of egg quality, which can be evaluated on a more objectie basis. In this respect, studied have been initiated to analyze in freshly-released eggs, the levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Biochemical composition; Crustacean culture; Eggs; Fatty acids; Fish culture; Hatcheries; Quality control; Vitamin C.
Ano: 1991
URL: http://www.vliz.be/imisdocs/publications/262328.pdf

Production, utilization and manipulation of &lt;i&gt;Artemia&lt;/i&gt; as food source for shrimp and fish larvae
Provedor de dados: 27
Autores: Lavens, P.; Léger, P.; Sorgeloos, P.
Larval culture of fish and shrimp can be seriously improved thanks to the results of recent research and development in the field of &lt;i&gt;Artemia&lt;/i&gt; production and utilization. The present article summarizes the most recent techniques for optimation in production and use of different stages of &lt;i&gt;Artemia&lt;/i&gt; in aquaculture:- cyst selection in function of hatching quality, purity, biometric characteristics, etc. - nauplii production: techniques for hatching, disinfection and decapsulation;- nutritional value of nauplii: quantitative aspects with regard to essential components and contaminants;- bioencapsulation of nauplii with different enrichment components: methodology and results in fish and shrimp culturing;- utilization of (pre-)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Brine shrimp culture; Developmental stages; Fish culture; Food organisms; Nutritive value; Shrimp culture; Artemia.
Ano: 1986
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3245

Effect of dietary essential fatty acids on egg quality and larviculture success of the greasy grouper (&lt;i&gt;Epinephelus tauvina&lt;/i&gt; F.): preliminary results
Provedor de dados: 27
Autores: Dhert, P.; Lim, L.C.; Lavens, P.; Chao, T.M.; Chou, R.; Sorgeloos, P.
In spite of its aquaculture potential, the larval rearing of greasy grouper (&lt;i&gt;Epinephelus tauvina&lt;/i&gt;) remains problematic and is not yet commercially feasible. The low and unpredictable larval survival is due to difficulties encountered in spawning the broodstock, the small size of the larvae at first feeding, and the high sensitivity of the larvae until day 45. The nutritional requirements for the broodstock as well as for the young larvae are still enigmatical. In this presentation the impact of supplementing the highly unsaturated fatty acids (HUFA), eicosapentaenoic (EPA), and docosahexaenoic acid (DHA) to the broodstock and larval diets is illustrated.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diets; Fatty acids; Fish culture; Fish eggs; Fish larvae; Nutritional requirements; Survival.
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2852

Possible applications of modern fish larviculture technology to ornamental fish production
Provedor de dados: 27
Autores: Dhert, P.; Lim, L.C.; Candreva, P.; Van Duffel, H.; Sorgeloos, P.
There has been rapid development in the marine foodfish larviculture technology in Europe since the early eighties, especially in the flat fish, turbot and halibut, and the bass and bream species. The most significant improvements in the eighties were the introduction of light control, artificial reproduction techniques, appropriate water treatment and the use of rotifers and &lt;i&gt;Artemia&lt;/i&gt; nauplii of specific sizes and in the late eighties and early nineties the quality enhancement of live food organisms using specific enrichment techniques. Present research is focused on the implementation of several microbial techniques to improve the hygiene of live prey and fish. Many of the modern larviculture techniques being used in marine foodfish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish culture; Ornamental fish.
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2933

Protein digestion in juvenile turbot (&lt;i&gt;Scophthalmus maximus&lt;/i&gt;) and effects of dietary administration of &lt;i&gt;Vibrio proteolyticus&lt;/i&gt;
Provedor de dados: 27
Autores: De Schrijver, R.; Ollevier, F.P.
The trial was made to study the protein digestion in juvenile turbot during passage of digesta from stomach to rectum. Moreover, diet supplementation with the potential probiotic bacteria, &lt;i&gt;Vibrio proteolyticus&lt;/i&gt;, was evaluated with regard to protein digestion. For a 3-week period, fish (25-30 g) were fed by oral intubation and received either a liquid mixture consisting of 40% nonpurified control diet and 60% water or this mixture supplemented with 10 &lt;sup&gt;10&lt;/sup&gt; viable &lt;i&gt;V. proteolyticus&lt;/i&gt; ml &lt;sup&gt;-1&lt;/sup&gt;. Daily dry matter was 1.5% body weight. As digesta progressed from the stomach to the foregut, hindgut and rectum, the increase in apparent nitrogen digestibility was accompanied by higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Diets; Digestibility; Digestion; Feeding experiments; Fish culture; Food conversion; Nitrogen; Probiotics; Probiotics; Proteins; Scophthalmus maximus; Stomach; Scophthalmus maximus; Vibrio proteolyticus.
Ano: 2000
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=9593

Search for beneficial bacterial strains for turbot (&lt;i&gt;Scophthalmus maximus&lt;/i&gt; L.) larviculture
Provedor de dados: 27
Autores: Huys, L.; Dhert, P.; Robles, R.; Ollevier, F.P.; Sorgeloos, P.; Swings, J.
The aerobic bacterial flora in the gut of turbot larvae and their influence on larval survival was examined. Two turbot experiments were run with six replicates each time. Large variation, from 0% up to 44%, was observed in the survival percentage of turbot larvae. There was no correlation between the number of bacteria present in the gut of turbot larvae and the larval survival rate. During both experiments, all replicates followed nearly the same rate of bacterial development in the gut of turbot larvae going from circa 10&lt;sup&gt;2&lt;/sup&gt; CFU larva&lt;sup&gt;-1&lt;/sup&gt; just before first feeding at day 3 post hatch to 10&lt;sup&gt;5&lt;/sup&gt; CFU larva&lt;sup&gt;-1&lt;/sup&gt; at day 9 post hatch.In total, 127 bacterial isolates from 12...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic bacteria; Aquaculture; Commensals; Digestive system; Fish culture; Fish larvae; Gastrointestinal tract; Microorganisms; Rearing; Scophthalmus maximus; Survival; Bacteria; Scophthalmus maximus; Vibrio mediterranei.
Ano: 2001
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=5720

Production and application of on-grown &lt;i&gt;Artemia&lt;/i&gt; in freshwater ornamental fish farm
Provedor de dados: 27
Autores: Lim, L.C.; Soh, A.; Dhert, P.; Sorgeloos, P.
This paper describes a pilot culture system for the production of on-grown &lt;i&gt;Artemia&lt;/i&gt; in freshwater ornamental fish farms. The system had 21 culture units, each consisting essentially of three components: an oval-shaped raceway, an air-water lift system and two waste collectors. Using artificial seawater at 20 ppt for culture and at a mean production rate of 3 kg/m&lt;sup&gt;3&lt;/sup&gt; of water in a 12-day cycle, the system had a production capacity of 8 metric tons of on- grown &lt;i&gt;Artemia&lt;/i&gt; a year. Biochemical analyses were preformed to evaluate the nutritional value of the on-grown &lt;i&gt;Artemia&lt;/i&gt; against three conventional live feeds, viz. live &lt;i&gt;Artemia&lt;/i&gt; nauplii, live &lt;i&gt;Moina&lt;/i&gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture economics; Aquaculture techniques; Biochemical composition; Diets; Fish culture; Food organisms; Moina; Nutritive value; Ornamental fish; Artemia.
Ano: 2001
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8491

(n-3) HUFA composition of freshly spawned eggs from European seabass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt;), seabream (&lt;i&gt;Sparus aurata&lt;/i&gt;) and red seabream (&lt;i&gt;Pagrus major&lt;/i&gt;) collected in different hatcheries
Provedor de dados: 27
Autores: Komis, A.; Léger, P.; Sorgeloos, P.
The biochemical composition of fish eggs is often used as an indicator for assessing the nutritional requirements of aquaculture species during their larval stages. Fatty acids of the (n-3) HUFA type have proven to play a critical role in providing good growth, survival and stress resistance in marine fish larvae. Hence, analyzing these fatty acids in fish eggs may provide interesting data on the requirements for those essential nutrients. By comparing the analyses of wild versus broodstock fish eggs differences may appear, possibly explaining differences in egg quality. Intra-spawning-season differences may further appear by following fatty acid profiles in the course of time. Finally, the influence of broodstock nutritionon egg composition may be another...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comparative studies; Fatty acids; Fish culture; Fish eggs; Hatcheries; Induced breeding; Dicentrarchus labrax [Bass]; Pagrus major; Sparus aurata [Gilthead].
Ano: 1991
URL: http://www.vliz.be/imisdocs/publications/262325.pdf

An oral challenge for turbot larvae with &lt;i&gt;Vibrio anguillarum&lt;/i&gt;
Provedor de dados: 27
Autores: Chair, M.; Dehasque, M.; Van Poucke, S.; Nelis, H.; Sorgeloos, P.; De Leenheer, A.P.
There is a need for a standard in vitro procedure to infect larval fish with bacteria. Such a procedure could be used as a tool to evaluate fish quality, verify fish sensitivity to a certain bacterial strain or evaluate the pathogenicity of a bacterium towards a given fish species. The availability of a challenge test is a prerequisite in studies dealing with the effect of different medicinal treatments on diseased fish. An oral challenge test would offer the possibility to investigate the routes of infection via the digestive tract, i.e. after feeding contaminated feeds. The present study aims to verify this hypothesis and proposes a standard challenge procedure for turbot (&lt;i&gt;Scophthalmus maximus&lt;/i&gt;) larvae with a pathogenic &lt;i&gt;Vibrio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial diseases; Digestive system; Disease control; Fish culture; Fish diseases; Fish larvae; Marine fish; Pathogenic bacteria; Vibrio anguillarum.
Ano: 1994
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2552

Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (&lt;i&gt;Artemia&lt;/i&gt; spp.) used for prophylactic chemotherapy of fish
Provedor de dados: 27
Autores: Nelis, H.; Léger, P.; Sorgeloos, P.; De Leenheer, A.P.
The brine shrimp &lt;i&gt;Artemia&lt;/i&gt; , an excellent live food source in aquaculture, has been studied as a carrier to deliver selected chemotherapeutic agents to fish for prophylactic treatment of infectious diseases. To monitor the efficiency of incorporation of trimethoprim and sulfamethoxazole in &lt;i&gt;&lt;i&gt;Artemia&lt;/i&gt; franciscana&lt;/i&gt;, a sensitive and specific analytical method was developed. It is based on homogenization of &lt;i&gt;Artemia&lt;/i&gt; nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C&lt;sub&gt;18&lt;/sub&gt; cartridges, and reversed-phase liquid chromatography with detection at 210 nm. The method is sensitive (detection limit, on the order of 3 µg/g with a sample quantity of 30 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Fish culture; Infectious diseases; Medicine; Artemia.
Ano: 1991
URL: http://www.vliz.be/imisdocs/publications/262329.pdf

A new artificial diet for the early weaning of seabass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt;) larvae
Provedor de dados: 27
Autores: Devresse, B.; Candreva, P.; Léger, P.; Sorgeloos, P.
The weaning of marine fish larvae is a critical step in larval rearing. The successful transition from live food to an artificial feed depends among others on the quality of the dry feed used (e.g. freshness of ingredients, digestibility, quality of the formulation) and the larvae themselves (e.g. age, behaviour towards artificial diets, development of the digestive tract, efficiency of certain metabolic pathways). The present study shows the results obtained with a new artificial diet formulated for the weaning phase of marine fish larvae (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt;) in commercial hatcheries.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial feeding; Feed composition; Fish culture; Fish larvae; Hatcheries; Dicentrarchus labrax [Bass].
Ano: 1991
URL: http://www.vliz.be/imisdocs/publications/262322.pdf

Cofeeding of phospholipids to turbot &lt;i&gt;Scophthalmus maximus&lt;/i&gt; L. larvae as a tool to reduce live food consumption
Provedor de dados: 27
Autores: Dhert, P.; González Félix, M.; Van Ryckeghem, K.; Geurden, I.; Thysen, F.; Lebegue, E.; Lavens, P.; Sorgeloos, P.
The possible benefits of feeding a formulated diet, together with &lt;i&gt;Artemia&lt;/i&gt; , to first-feeding turbot larvae were investigated. Five dietary regimes were used: control ( &lt;i&gt;Artemia&lt;/i&gt; only), cofeeding with a diet rich in phospholipid (PL) from bovine brain, cofeeding with a diet rich in free fatty acids (FFA) from the same source, cofeeding with a commercial diet (Lansy A2), and a formulated feed only (PL-rich diet). All treatments with artificial diets and the control treatment that received &lt;i&gt;Artemia&lt;/i&gt; exclusively gave a similar survival rate of the fish at day 29. Cofeeding with artificial diets resulted in a lower growth rate than the control treatment. Cofeeding the larvae with PL-rich or FFA-rich diets did...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Feeding experiments; Fish culture; Fish larvae; Food organisms; Scophthalmus maximus; Artemia.
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4014

Palatability enhancing nutrients for the European eel, &lt;i&gt;Anguilla anguilla&lt;/i&gt; L.
Provedor de dados: 27
Autores: Pacolet, W.; Reynders, K.; Ollevier, F.P.
Feeding experiments with European glass eels &lt;i&gt;Anguilla anguilla&lt;/i&gt; L. demonstrated a high degree of attractiveness for the natural diets Tubifix and cod roe. Previous experiments had indicated that incorporation of bovine spleen and/or blood into paste feeds significantly improved the growth rate and survival. To increase feed consumption, the effect of some basic components available from the current generation of chemo-attractants were evaluated. Using a modified Omission Test Procedure, we focused on monosodiumglutamate, betaine, the nucleotides IMP and GMP, and fractions of cattle blood. These components were incorporated into non-attractive casein-based test diets and administered following standardized procedures to intensively...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed composition; Fish culture; Food additives; Food consumption; Food organisms; Nutritive value; Organoleptic properties.
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2884

Live-food mediated drug delivery as a tool for disease treatment in larviculture: 2. A case study with European seabass
Provedor de dados: 27
Autores: Chair, M.; Romdhane, M.S.; Dehasque, M.; Nelis, H.; De Leenheer, A.P.; Sorgeloos, P.
The purpose of this study is to investigate the possibility of oral delivery of the antibiotics Trimethoprim (TMP) and Sulfamethoxazole (SMX) to marine fish larvae through incorporation of these antibiotics into the live food organism &lt;i&gt;Artemia&lt;/i&gt;. SMX and TMP were selected for their wide range action against gram negative pathogenic bacteria and because of their limited solubility in seawater. Ormetoprim-Sulfadimethoxine (brand name Romet-30) is a new combination of a similar antimicrobial drug used in aquaculture. Diseased penaeid larvae fed Romet-30 through the food chain exhibited greater survival than the untreated ones. In an earlier study Verpraet have described a technique for bioencapsulating high doses of more than 500 mu g TMP +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Aquaculture techniques; Disease control; Fish culture; Fish larvae; Food additives; Food organisms; Dicentrarchus labrax [Bass].
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2805

Review on the dietary effects of phospholipids in fish and crustacean larviculture
Provedor de dados: 27
Autores: Coutteau, P.; Geurden, I.; Camara, M.R.; Bergot, P.; Sorgeloos, P.
A beneficial effect of dietary phospholipid (PL) supplementation in purified diets in terms of survival, growth, resistance to stress tests, and occurrence of deformities has been demonstrated in larval and juvenile stages of various species of fish and crustaceans. The exact determination of PL requirements in larvae is complicated due to the difficulty to bio-encapsulate PL in live prey. Furthermore, the great variety in purity and composition of the PL sources, and the experimental conditions (such as diet formulation and extent of co/prefeeding with live food) makes it difficult to compare requirements determined with artificial diets. Larval stages are extremely sensitive to a dietary PL deficiency and require higher levels of dietary PL than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complex lipids; Crustacean culture; Crustacean larvae; Diets; Fish culture; Fish larvae.
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2927

Growth performance of Nile tilapia, Oreochromis niloticus, fingerlings reared in Na2CO3 limed waters - doi: 10.4025/actascianimsci.v32i3.8510
Provedor de dados: 2
Autores: Cavalcante, Davi de Holanda; Universidade Federal do Ceará; Barros, Renan Loiola; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; UFC.
Current experiment was undertaken during 6 weeks with Nile tilapia, Oreochomis niloticus, fingerlings (1.28 &amp;plusmn; 0.03 g) to assess the effects of moderate Na2CO3 liming on water quality and fish growth performance. Twenty-four 25 L-aquaria, with 15 fish per aquarium, were used, of which twelve aquaria were placed in the lab’s indoor room and twelve in the outdoor area. Two types of water (clear or green) and three different water-quality managements (none, HCl acidification and Na2CO3 liming) were simultaneously evaluated in a 3 x 2 factorial design. Total ammonia, calcium hardness, pH and total alkalinity in the green water aquaria were significantly higher than rates in the clear water aquaria. Slight liming acid water with Na2CO3 did not produce...
Palavras-chave: Fish culture; Limnology; Water alkalinity; Water hardness fish culture; Limnology; Water alkalinity; Water hardness.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/8510

Taxa alimentar no desempenho de juvenis de robalo-peva em tanque-rede - doi: 10.4025/actascianimsci.v33i4.11413
Provedor de dados: 2
Autores: Barbosa, Moysés Cavichioli; Universidade Federal de Santa Catarina; Neves, Fábio de Fárias; Universidade Federal de Santa Catarina; Cerqueira, Vinicius Ronzani; Universidade Federal de Santa Catarina.
O conhecimento da taxa ótima de alimentação para uma determinada espécie não só é importante para promover o maior crescimento e a melhor eficiência na alimentação, mas também para prevenir a deterioração de qualidade de água como resultado do excesso de alimento. O presente estudo teve como objetivo avaliar o desempenho do robalo-peva, Centropomus parallelus cultivado em tanques-rede flutuantes sob o efeito de diferentes taxas alimentares (1; 1,5; 2 e 2,5% da biomassa ao dia e a taxa controle que foi até a saciedade), em condições de cultivo no ambiente natural. Durante 40 dias, cada tratamento foi avaliado em triplicatas e foram verificados os parâmetros biológicos (sobrevivência, taxa de crescimento específico, peso e comprimentos médios finais) e...
Tipo: Criação em condições naturais
Palavras-chave: 5.06.03.00-0 Alimentação; Centropomus parallelus; Crescimento; Cultivo intensivo; Piscicultura Centropomus parallelus; Feeding; Fish culture; Growth; Intensive rearing.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11413

Calcium-free and low-calcium water production for aquaculture research - doi: 10.4025/actascianimsci.v33i1.10686
Provedor de dados: 2
Autores: Pinheiro, Paloma Damasceno; Universidade Federal do Ceará; Cavalcante, Davi de Holanda; Universidade Federal do Ceará; Moraes, Manuella Gazzineo de; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
The present work aimed to obtain a mathematical expression to calculate the amount of EDTA required to produce calcium-free and low-calcium water ([Ca2+] &lt; 5 mg L-1). Initially, a pilot test was carried out to confirm the effectiveness of EDTA as a chelating agent of waterborne calcium and to evaluate its effect on water pH. Five application rates of Na-EDTA (25, 50, 75, 100 and 125 mg L-1) were tested. The concentration of calcium in water was determined initially (before the application of EDTA) and after one hour. Linear regression analysis was performed to find out the relationship between the desired calcium concentration in water and the required EDTA: initial calcium hardness ratio. The expression ŷ = -0.0911x + 3.3628 (R² = 0.933) was derived...
Palavras-chave: EDTA; Calcium hardness; Fish culture EDTA; Calcium hardness; Fish culture.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10686

Can a small change in the tilapia’s on-going feeding strategy impair its growth? - doi: 10.4025/actascianimsci.v35i3.18290
Provedor de dados: 2
Autores: Caldini, Nayara Nunes; Universidade Federal do Ceará; Pereira, Nayagra Vidal; Universidade Federal do Ceará; Rebouças, Vanessa Tomaz; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; UFC.
The aim of the present work was to answer the following question: can a small change in the tilapia’s on-going feeding strategy impair its growth? In the initial phase of the study, fish were evenly distributed and maintained for two weeks in four tanks. In tanks 1 and 2, the ration was given in three equal meals at 8, 12 and 16h or at 9, 13 and 17h, respectively. In tanks 3 and 4, there was only one daily meal at 9 or 10 o’clock, respectively. In the second 8-week phase, fish from tank 1 were distributed into two groups in ten 100-L tanks: the 8-12-16 group, in which fish were always fed at 8, 12 and 16h; and the 8-12-16/9-13-17 group, in which fish were fed at 8, 12 and 16h in the first four weeks and at 9, 13 and 17h in the last four weeks. Fish from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding schedule; Circadian rhythm; Feeding management; Fish culture Feeding schedule; Circadian rhythm; Feeding management; Fish culture.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18290

Interaction between feeding rate and area for periphyton in culture of Nile tilapia juveniles - doi: 10.4025/actascianimsci.v34i2.12469
Provedor de dados: 2
Autores: Rebouças, Vanessa Tomaz; Universidade Federal do Ceará; Caldini, Nayara Nunes; Universidade Federal do Ceará; Cavalcante, Davi de Holanda; Universidade Federal do Ceará; Silva, Francisco Jackes Rodrigues da; Universidade Federal  do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal  do Ceará.
The objective of the present work was to determine the effects of the interaction between feeding rate and area for periphyton in rearing aquaria for Nile tilapia. Twenty 25 L polyethylene outdoor aquaria were used to hold experimental fish. Three tilapia fingerlings (2.56 ± 0.14 g) were stocked in each aquarium for five weeks (12 fish m-2). There were two different feeding rates (full and full minus 30%) and two submerged areas for periphyton development (59.4% and 96.5% of the aquarium surface area; n = 5). Final body weight, specific growth rate and yield in the 96.5%-area aquaria of fish submitted to 30% less feed were significantly higher than in the 96.5%-area aquaria submitted to full feeding rates. Fish growth in the restricted-feed aquaria was...
Palavras-chave: Tilapia; Fish culture; Semi-intensive system; Productivity; Water quality.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12469

High levels of total ammonia nitrogen as NH4+ are stressful and harmful to the growth of Nile tilapia juveniles - doi: 10.4025/actascibiolsci.v35i4.17291
Provedor de dados: 3
Autores: Silva, Francisco Jackes Rodrigues da; Universidade Federal do Ceará; Lima, Francisco Roberto dos Santos; Universidade Federal do Ceará; Vale, Diego Alves do; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
This study determined whether high levels of total ammonia nitrogen (TAN) as NH4+ are harmful to the growth performance of Nile tilapia juveniles. Fingerlings (0.31 ± 0.04 g) were assigned to 30 polyethylene 100-L tanks in a roofed room for 12 rearing weeks. There were increasing levels of TAN by increased NH4Cl application rates (0.0; 0.25 and 0.50 g tank-1 week-1) at three conditions of water pH (acidic, 6.2 ± 0.5; neutral, 7.2 ± 0.8 and alkaline, 8.8 ± 0.3). The application of HCl to acidic tanks caused 100% of TAN to be converted into NH4+. The poorest growth performance results were observed for the alkaline tanks subjected to the highest application of NH4Cl. In acidic tanks, fish survival has dropped in those tanks under the highest application rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura non-ionized ammonia; Ionized ammonia; Fish culture; Water quality qualidade da água.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17291

Low water quality in tropical fishponds in southeastern Brazil
Provedor de dados: 42
Autores: COSTA,SIMONE M.; APPEL,ELEONORA; MACEDO,CARLA F.; HUSZAR,VERA L.M.
Expansion of aquaculture around the world has heavily impacted the environment. Because fertilizers are needed to raise fish, one of the main impacts is eutrophication, which lowers water quality and increases the frequency of algal blooms, mostly cyanobacteria. To evaluate whether the water quality in 30 fishponds in southeastern Brazilian met the requirements of Brazilian legislation, we analyzed biotic and abiotic water conditions. We expected that the high nutrient levels due to fertilization would cause low water quality. We also analyzed cyanotoxins in seston and fish muscle in some systems where cyanobacteria were dominant. The fishponds ranged from eutrophic and hypereutrophic with high phytoplankton biomass. Although cyanobacteria were dominant in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyanobacteria; Cyanotoxins; Eutrophication; Fish culture.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301181

Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture
Provedor de dados: 52
Autores: Baccarin,Ana Eliza; Camargo,Antonio Fernando Monteiro.
The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish culture; Environmental impact; Feed management; Effluent.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100012

Waterborne ammonia and silver catfish, Rhamdia quelen: survival and growth
Provedor de dados: 65
Autores: Miron,Denise dos Santos; Becker,Alexssandro Geferson; Loro,Vania Lúcia; Baldisserotto,Bernardo.
The aim of the present study was to determine the effects of waterborne un-ionized ammonia (NH3) on the survival and growth of silver catfish (Rhamdia quelen). Juveniles were exposed to 0.10, 0.22, and 0.42mg L-1 NH3 at pH 8.2 for 45 days. After 15 days, a significant mortality rate (33%) was observed in the fish exposed to 0.42mg L-1 NH3. After 20 days, 23% and 43% mortality (both significant) was observed in fish exposed to 0.22 and 0.42mg L-1 NH3, respectively. A significant negative relationship between survival, length, daily weight gain, standard growth rate, and biomass of juveniles of silver catfish per tank with waterborne NH3 levels was found at the end of the experiment. The resulting survival and waterborne NH3 relationship indicated that, to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish culture; Nitrogenous compounds; Weight gain.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200028

Production of cachama reciprocal hybrids in earth ponds
Provedor de dados: 65
Autores: Ramírez-Mora,José Nobel; Useche,Manuel Crisostomo; Niño,Pedro Alexander; Leal,Carlos; Baldisserotto,Bernardo.
ABSTRACT:  The growth of cachama hybrids, cachamoto (Colossoma macropomum ♀ x Piaractus brachypomus ♂) and cachamay (P. brachypomus ♀ x C. macropomum ♂) was compared for 154 days to determine which showed the better productivity. The experiment was carried out in three earth ponds, each divided transversely with a plastic net, yielding six experimental units. Juveniles of cachamoto of 12.95±2.43g and 6.75±0.42cm and cachamay of 16.65±3.64g and 7.41±0.62cm were distributed in each sub-tank of 240m2 at a density of 0.5 fish m-2. Fish were fed twice daily except on days when their weight and length, and the physical and chemical parameters of the water were measured. The following productive variables were evaluated: growth in weight and length, daily weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black pacu; Pirapitinga; Fish culture; Productivity; Cost/benefit relationship.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001100651

Lab-scale periphyton-based system for fish culture
Provedor de dados: 65
Autores: Cavalcante,Davi de Holanda; Silva,Suzete Roberta da; Pinheiro,Paloma Damasceno; Martins,Ádila da Cunha; Sá,Marcelo Vinícius do Carmo e.
The present research aimed to assess a lab-scale model to study periphyton-based systems for fish culture. Twenty-five liters plastic aquaria were stocked with three Nile tilapia, Oreochromis niloticus, juveniles (0.77±0.09g; 12 fish m-2) for 6 weeks in a 2x2 factorial design. Small plastic bottles were placed in some aquaria for periphyton development. Two feeding regimes were employed: "full-fed" (standard feeding rates were fully adopted) and "half-fed" (50% of standard feeding rates). Growth performance and limnological variables were observed in each aquarium. There werefive replicates per treatment. Fish have fed actively on periphyton, especially in the half-fed aquaria. The placement of periphyton bottles had no significant effects on the water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Tilapia; Feeding restriction; Fish culture.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200022

Digestibility, protein retention rate and ammonia excretion in juvenile fat snook (Centropomus parallelus) fed with different protein levels
Provedor de dados: 65
Autores: Carvalho,Maria Araci Grapiuna de; Fernandes,Luiz Fernando Loureiro; Gomes,Levy de Carvalho.
ABSTRACT: The aim of this study was to determine the level of dietary crude protein (CP) (480, 400, 440, 520 and 560g kg-1) in rations for juvenile II fat snook (Centropomus parallelus) that best promotes protein absorption and lower excretion of nitrogenous products. Three experiments were conducted: the first assessed the protein retention rate; the second evaluated ammonia excretion; and the third determined the best digestibility coefficient. The estimated protein retention rate showed a positive quadratic response to dietary CP with maximum retention at the 510.20g kg-1 protein level, and increasing levels of protein resulted in a greater total ammonia excretion rate in water. The mean apparent protein digestibility coefficient values increased with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude digestible protein; Fish culture; Nitrogen excretion; Diet.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700652