A species-specific microsatellite marker to discriminate European Atlantic salmon, brown trout, and their hybrids

Charles Perrier (1) , Frederic Grandjean (2) , Jérôme Le Gentil (1) , Corinne Cherbonnel (3) , Guillaume Evanno (1)

1 ESE - Écologie et santé des écosystèmes
2 LEES - Laboratoire Écologie, Évolution, Symbiose [UMR 6556 – Poitiers]
3 GENINDEXE - Laboratoire d'Analyses Génétiques

Atlantic salmon and brown trout frequently co-occur in the same habitats and juveniles of both species are difficult to discriminate. Hybridization between the two taxa has also been widely documented especially in endangered populations hence the need for species-specific molecular markers. Here we show that the microsatellite marker SsAD486 has two species-specific alleles allowing the identification of Atlantic salmon, brown trout, and their hybrids throughout the European range of these species. Since this marker is polymorphic in Atlantic salmon populations from Western Atlantic, it could also help discriminating between North American and European salmon.

Mots clés: hybridization; microsatellite marker; salmon; atlantic; sea trout

Mots clés: salmo salar; saumon de l'atlantique; salmo trutta; truite commune; europe; amérique du nord

Domaines: Biologie animale; Biodiversité et Ecologie

Charles Perrier, Frederic Grandjean, Jérôme Le Gentil, Corinne Cherbonnel, Guillaume Evanno. A species-specific microsatellite marker to discriminate European Atlantic salmon, brown trout, and their hybrids. Conservation Genetics Resources, 2011, 3 (1), pp.131-133. ⟨10.1007/s12686-010-9307-1⟩. ⟨hal-01453825⟩