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| Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Goulletquer, Philippe; Faury, Nicole. |
| This study presents the zootechnical performances in their natural habitat, the Marennes Oléron Bay, of two Crassostrea gigas and Crassostrea angulata taxons of European and Asian origin, as well as those of their "European" hybrids (6 studied strains). Growth performance seems to be a phenotypic characterisation linked with the maternal origin (c. gigas or C. angulata). The Asian "pure gigas" or "pure angulata" strains' growth performances differ more from those of their European "sisters" than the European taxons with their hybrids. The C. angulata strain, of Taiwanese origin, does not survive the second culture week in the Marennes Oléron Bay. The C. angulata strain seems to "carry" a strong mortality potential. After 6 months of off-bottom culture, the... |
| Tipo: Text |
Palavras-chave: Survie; Performance croissance; Hybrides; Zootechnie; Crassostrea angulata; Crassostrea gigas; Huîtres. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/acte-3382.pdf |
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| Goulletquer, Philippe; Wolowicz, Maciej; Latala, Adam; Geairon, Philippe; Huvet, Arnaud; Boudry, Pierre. |
| Respiration rates of various geographical strains of Crassostrea gigas were compared to assess the respiratory expenditure as a physiological indicator of catabolism (cost of maintenance). Parental oysters, sampled in France (Marennes-Oleron), Japan (Hiroshima), Taiwan (Tunkang) and Spain (Cadix), were differentiated by both their geographic origin and by mitochondrial DNA markers, allowing the distinction between the two closely related taxa Crassostrea gigas and Crassostrea angulata. After reproduction of these parental oysters, respiration rates of spat of each strain, reared under common controlled conditions, were individually estimated at 20 degrees C by using a volumetric microrespirometer. Our results demonstrated that physiological variability... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; NE Atlantic; Oyster strains; Hybrids; Crassostrea angulata; Crassostrea gigas; Metabolism; Respiration rates; Océan Pacifique; Atlantique NE; Souches génétiques; Hybrides; Crassostrea angulata; Crassostrea gigas; Métabolisme; Taux de respiration. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-859.pdf |
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| Haure, Joel; Huvet, Arnaud; Palvadeau, Hubert; Nourry, Max; Martin, Jean-louis; Boudry, Pierre; Penisson, Christian. |
| A comparative study of the growth of the oysters Crassostrea gigas, Crassostrea angulata and their hybrids was carried out in 1999 in system controlled with contribution of the micro alga Skeletonema costatum. The results showed significant differences of the pondéral growth of the four studied progenies. The animals C. gigas had growth rates 1.4 times greater than C. angulata oysters. The hybrid progenies were shown more powerful than Portuguese oysters but are not different from the Japanese oysters. The ecophysiologic study showed that the averages of filtration and oxygen uptake, obtained by means of a three hours recording, cannot differentiate the four studied progenies. On the other hand, the calculation of the FTA (Feeding Time Activity) allowed to... |
| Tipo: Text |
Palavras-chave: Skeletonema costatum; Hybrids; Crassostrea angulata; Crassostrea gigas; Ecophysiology; Growth; Skeletonema costatum; Hybrides; Crassostrea angulata; Crassostrea gigas; Ecophysiologie; Croissance. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/rapport-1636.pdf |
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| Balabaud, Karen. |
| Avec 30 000 tonnes d'huîtres produites chaque année, l'ostréiculture est l'activité principale du bassin de Marennes-Oléron. Caractérisé par une très forte interaction avec les milieux professionnels de la conchyliculture, l'Ifremer se doit avant tout de répondre à leurs questions, en particulier en matière de croissance, de reproduction et surtout en matière de mortalité de l'huître creuse. En effet, l'huître portugaise Crassostrea angulata fut décimée de 1968 à 1972 par un agent pathogène de type iridovirus. Pour faire face à cette disparition des populations d'huîtres japonaises Crassostrea gigas sont alors introduites en France. Mais, les professionnels s'interrogent sur la bonne adaptation de l'huître creuse japonaise à l'environnement français et... |
| Tipo: Text |
Palavras-chave: Génétique; Croisement; Isolement reproductif; Huîtres creuses; Hybrides; Marqueurs moléculaires; PCR; Crassostrea gigas; Crassostrea angulata. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00033/14441/11740.pdf |
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| Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Robert, Stephane; Goulletquer, Philippe. |
| This study presents the zootechnical performances in their natural habitat, the Marennes Oléron Bay, of two Crassostrea gigas and Crassostrea angulata taxons of European and Asian origin, as well as those of their "European" hybrids (6 studied strains). Growth performance seems to be a phenotypic characterisation linked with the maternal origin (c. gigas or C. angulata). The Asian "pure gigas" or "pure angulata" strains' growth performances differ more from those of their European "sisters" than the European taxons with their hybrids. The C. angulata strain, of Taiwanese origin, does not survive the second culture week in the Marennes Oléron Bay. The C. angulata strain seems to "carry" a strong mortality potential. |
| Tipo: Text |
Palavras-chave: Performance croissnce; Hybrides; Zootechnie; Crassostrea angulata; Crassostrea gigas; Huîtres. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/acte-3283.pdf |
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