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| Provedor de dados: |
Biological Sciences
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| País: |
Brazil
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| Título: |
Temperatures for fertilization and hatching and their influence on determining the sex ratio of the silver catfish Rhamdia quelen - doi: 10.4025/actascibiolsci.v32i2.5261
Temperatures for fertilization and hatching and their influence on determining the sex ratio of the silver catfish Rhamdia quelen - doi: 10.4025/actascibiolsci.v32i2.5261
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| Autores: |
Longo, Ricardo da Silva; Universidade Federal de Santa Catarina
Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina
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| Data: |
2010-05-28
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| Ano: |
2010
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| Palavras-chave: |
2.04.06.00-2 hatching time
Survival 2.04.06.00-2 hatching time
Survival
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| Resumo: |
This study aimed to evaluate the effects of water temperature during fertilization and egg incubation in the determination of the sex ratio of fingerlings of silver catfish Rhamdia quelen. Water temperatures of 19, 25 and 30°C were used during the egg fertilizations, and the eggs were then incubated at temperatures of 19, 25 or 30°C for each fertilization temperature condition. An increase in temperature reduced the fertilization rate of R. quelen, while the final number of fish was reduced when a lower temperature was used during egg incubation. The temperatures of fertilization and incubation that were tested did not alter the sex ratio.
This study aimed to evaluate the effects of water temperature during fertilization and egg incubation in the determination of the sex ratio of fingerlings of silver catfish Rhamdia quelen. Water temperatures of 19, 25 and 30°C were used during the egg fertilizations, and the eggs were then incubated at temperatures of 19, 25 or 30°C for each fertilization temperature condition. An increase in temperature reduced the fertilization rate of R. quelen, while the final number of fish was reduced when a lower temperature was used during egg incubation. The temperatures of fertilization and incubation that were tested did not alter the sex ratio.
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| Tipo: |
Efeito da temperatura
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| Idioma: |
Português
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5261
10.4025/actascibiolsci.v32i2.5261
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| Editor: |
Universidade Estadual De Maringá
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Biological Sciences; v. 32, n. 2 (2010); 107-111
Acta Scientiarum. Biological Sciences; v. 32, n. 2 (2010); 107-111
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| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Biological Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
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