Data/hora: 05/06/2024 03:09:55

Provedor de dados: | 5
País: | France
Título: | Reduced female gene flow in the European flat oyster Ostrea edulis
Autores: | Diaz Almela, F; Boudry, Pierre; Launey, Sophie; Bonhomme, Francois; Lapegue, Sylvie.
Data: | 2004-11
Ano: | 2004
Palavras-chave: | Ostrea edulis; Polymorphism; Flat oyster; Population; Gene.
Resumo: | The geographical structure of 15 natural populations of the flat oyster (Ostrea edulis L.) was assessed by single-strand conformation polymorphism (SSCP) of a 313-base-pair (bp) fragment of the mitochondrial 12S-rRNA gene. Fourteen haplotypes were observed, with one being dominant in the Mediterranean samples and another one in the Atlantic populations. The geographically extreme populations sampled in Norway and the Black Sea appeared differentiated by exhibiting the dominance of a third group of haplotypes. The results were compared to available microsatellite data at five loci. The Atlantic/Mediterranean differentiation pattern was qualitatively the same with both types of markers, confirming an isolation-by-distance pattern. The average mitochondrial haplotypic diversity displayed a high among populations variance, reflecting small effective population size in some locations. Additionally, a 10-fold quantitative difference was observed in Fst between the mitochondrial and the nuclear genomes, which could be due to an unbalanced sex ratio or sex-biased differential reproductive success between males and females (or both).
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2004/publication-680.pdf

DOI:10.1093/jhered/esh073

Editor: | Oxford University Press
Relação: | http://archimer.ifremer.fr/doc/00000/680/
Formato: | application/pdf
Fonte: | Journal of Heredity (0022-1503) (Oxford University Press), 2004-11 , Vol. 95 , N. 6 , P. 510-516
Fonte: | 2004 The American Genetic Association