Data/hora: 04/06/2024 10:15:29

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Etude des bases génétiques de la mortalité estivale et des relations avec la croissance chez les juvéniles de l'huître creuse Crassostrea gigas
Autores: | Degremont, Lionel.
Data: | 2003-12-16
Ano: | 2003
Palavras-chave: | Juvenile; Genetic; Growth; Summer mortality; Crassostrea gigas; Juvéniles; Héritabilité; Rendement; Croissance; Mortalités estivales; Crassostrea gigas.
Resumo: | In order to study genetic variability for survival during summer mortality events in the oyster Crassostrea gigas, a first generation (G1) was bred in 2001. 17 G1 half-sib families (HSF) were obtained ; each HSF was reared in three sites along the French coast during the summer period. Significant differences in survival were observed among HSF indicating a genetic basis for survival. In 2002, several HSF were selected on their survival performances to constitute a divergent selection (G2) (outbreed and inbred). Significant differences in survival were found among these offspring of the 'high' and 'low' selected groups in several laboratory experiments and in all sites. Growth performance was not influenced by selection on survival. This confirms the results observed in the G1 with a positive response to selection. The high heritability for survival indicates that selective breeding programs could efficiently improve survival of juveniles oysters
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2003/these-202.pdf
Editor: | Université de Caen/Basse-Normandie
Relação: | http://archimer.ifremer.fr/doc/00000/202/
Formato: | application/pdf