An amylase gene polymorphism is associated with growth differences in the Pacific cupped oyster Crassostrea gigas
|Author(s)||Prudence Marie1, Moal Jeanne1, Boudry Pierre2, Daniel Jean-Yves1, Quere Claudie1, Jeffroy Fanny1, Mingant Christian1, Ropert Michel3, Bedier Edouard4, Van Wormhoudt A5, Samain Jean-Francois1, Huvet Arnaud1|
|Affiliation(s)||1 : IFREMER, Ctr Brest, UMR100, F-29280 Plouzane, France.
2 : IFREMER, LGP, F-17390 La Tremblade, France.
3 : IFREMER, LERN, F-14520 Port En Bessin, France.
4 : IFREMER, LERMPL, F-56470 La Trinite, France.
5 : MNHN, UMR5178, F-29900 Concarneau, France.
|Source||Animal Genetics (0268-9146) (Blackwell science), 2006-08 , Vol. 37 , N. 4 , P. 348-351|
|WOS© Times Cited||35|
|Keyword(s)||Growth, Genotype, Digestive enzyme, Bivalve, Alpha amylase|
|Abstract||This study investigated the non-neutrality of genetic polymorphism in two alpha-amylase genes (AMYA and AMYB) in the oyster Crassostrea gigas. Bi-parental oyster families, bred to be polymorphic for markers in these genes, were monitored for growth and survival for 1 year under standard culture conditions in two French production sites. Within-family genotype frequencies indicated that the two amylase genes were closely linked (c. 1.7 cM). Within two of three families, significant differences in growth were observed between genotypes at one of the two production sites, suggesting that this polymorphism is not neutral and might be under selection because of its role in digestive function. Estimated daily yields were different between amylase genotypes, indicating the potential value of amylase markers in selective breeding programmes to improve oyster growth.|