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| Viard, Carole. |
| L'industrie de la perle nmre étant florissante en Polynésie française, l'aquaculture de l'huître perlière Pinctada margaritifera (Linné, 1758) suscite de nombreuses recherches. L'objectif de cette étude était d'observer le contrôle qu'exerce la température sur la gamétogenèse de la nacre et de voir s'il était possible de synchroniser, grâce à ce paramètre, la maturité des individus en laboratoire. Les variations de températures annuelles observées dans le milieu naturel ont été reproduites sur huit semaines. Régulièrement, des lots de nacres ont été sacrifiés, plusieurs variables biométriques ont été mesurées et l'analyse histologique des gonades a permis d'identifier le stade de maturité. Les résultats ont montré que la température a eu une influence sur... |
| Tipo: Text |
Palavras-chave: Huîtres perlières; Pinctada margaritifera; Température; Gamétogenèse; Conditionnement. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00446/55760/57421.pdf |
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| Gerard, Andre; Naciri-graven, Yamama; Boudry, Pierre; Launey, Sophie; Heurtebise, Serge; Ledu, Christophe; Phelipot, Pascal. |
| At the end of the 1980s, after two decades of aquaculture research in molluscs, Ifremer initiated its first genetic studies. These new studies quickly revealed the limits of knowledge in aquaculture, particularly in terms of controlling oyster reproduction. This presentation attempts to summarize the available information on genetics in aquaculture. In particular, breeding practices in the 1980s involved populations of broodstock, while genetics requires modern techniques where individuals, not just populations, can be identified. Controlling reproduction at the individual level in oysters raises new questions that existing protocols cannot address, especially in terms of controlling sex determination, individual maturity, spawning synchrony, chemical... |
| Tipo: Text |
Palavras-chave: Gamètes; Fécondation; Induction ponte; Reproducteur; Conditionnement; Gamétogénèse; Génétique; Reproduction; Crassostrea gigas; Huîtres. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/1995/acte-3210.pdf |
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| Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe. |
| The study of maturation and spawning of the oyster is part of a research program to investigate the summer mortalities of the oysters, Crassostrea gigas in Marennes-Oléron Bay. Four maturity stages were simultaneously obtained by diet and thermal conditioning (immature, low maturation, mature and post-spawning stages). Measurements of clearance, filtration, absorption and respiration rates allowed a calculation of the scope for growth and hence an estimation of the oyster's energetic budget at various maturity stages. Male and female oysters had similar physiological responses. The filtration rate ranged from 2.4 to 2.6 1.h(-1) at the early stages of maturation and decreased to 1.8 1.h.' during the maturity stage. Growth rate resulting from gonad... |
| Tipo: Text |
Palavras-chave: Huître; Crassostrea gigas; Conditionnement; Maturation; Filtration; Absorption; Respiration; Oyster; Crassostrea gigas; Conditioning; Maturation; Filtration; Absorption and respiration rates. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/publication-3090.pdf |
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