Consulta: subjectFacets:"Paternal contribution"
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Microsatellite analysis of 6-hour-old embryos reveals no preferential intraspecific fertilization between cupped oysters Crassostrea gigas and Crassostrea angulata
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Huvet, Arnaud; Balabaud, K; Bierne, Nicolas; Boudry, Pierre.
Experimental examination of reproductive isolation is the first step in understanding li,hybridization processes. Here, we studied preferential fertilization between 2 cupped oyster taxa, Crassostrea angulata and Crassostrea gigas, as a potential prezygotic reproductive isolation. Early examination of sperm competition is now possible by molecular analysis of oyster embryos. This avoids the confounding effect of differential mortality during the larval stage. Six hundred embryos were sampled from 2 crosses. Three microsatellite loci were enough to determine without ambiguity the taxa of contributing sires of embryos. No evidence of preferential fertilization between gametes from the same taxa was shown. A significantly higher contribution of the C. gigas...
Tipo: Text
Palavras-chave: Paternal contribution; Microsatellites; In vitro crossings; Hybridization; Crassostrea angulata; Crassostrea gigas.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-436.pdf