| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Characterization of summer mortalities of C. gigas oyster in France in relation to environmental parameters
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| Autores: |
Soletchnik, Patrick
Ropert, Michel
Bedier, Edouard
Costil, K. S.
Dubois, Brice
Degremont, Lionel
Bouget, Jean-francois
Martin, Jean-louis
Enriquez-diaz, M.
Faury, Nicole
Le Moine, Olivier
Renault, Tristan
Gagnaire, Beatrice
Huvet, Arnaud
Moal, Jeanne
Samain, Jean-francois
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| Data: |
2003-04-13
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| Ano: |
2003
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| Palavras-chave: |
Seasonal variation
Oyster culture
Mortality causes
Hatcheries
Gametogenesis
Environmental factors
Crassostrea gigas
Oysters
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| Resumo: |
Field characterization of summer mortality was performed in France in the frame of the Morest project. Natural and hatchery spat were compared between three oyster production areas in France. Regardless of the natural or hatchery origin, oysters died during the reproduction period after temperature reaches 19 degree C. Thus, in southern areas, temperature accelerated gametogenesis of small spat (10mm) as well as adults, and mortality appeared for the two age classes. In contrast, sexual maturation proceeded more slowly in northern where spat mortality was lower compared to 18 months old oysters. However, critical gametogenesis and temperature were not sufficient to induce mortalities, as observed in examples with stable environment. Alternatively sediment proximity in addition to oyster manipulations increased mortality during spring and summer, suggesting that some additional environmental stresses were necessary to reproduce the phenomena. These interaction processes will be detailed in the other Morest contributions.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2003/acte-3348.pdf
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| Editor: |
98 Annual Meeting National Shellfisheries Association, Monterey, CA (USA), 26-30 Mar 2006
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| Relação: |
http://archimer.ifremer.fr/doc/00000/3348/
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| Formato: |
application/pdf
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