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ICES Journal of Marine Science: Journal du Conseil 2006 63(9):1705-1709; doi:10.1016/j.icesjms.2006.07.006
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© 2006 International Council for the Exploration of the Sea

An investigation of the population genetic structure of pollack (Pollachius pollachius) based on microsatellite markers

Grégory Charriera,b,*, Jean-Dominique Durandc, Louis Quinioub and Jean Larocheb

a NOAA Southwest Fisheries Science Center, Santa Cruz Laboratory 110 Shaffer Road, Santa Cruz, CA 95060, USA
b Laboratoire LEMAR (UMR CNRS 6539), Institut Universitaire Européen de la Mer, Place Nicolas Copernic, Technopôle Brest-Iroise 29280 Plouzane, France
c IRD/UR 070, Laboratoire GPIA, Université Montpellier II (UMR CNRS 5171), Station Méditerranéenne de l'Environnement Littoral 1 Quai de la Daurade, 34200 Sète, France

*Correspondence to G. Charrier: NOAA Southwest Fisheries Science Center, Santa Cruz Laboratory, 110 Shaffer Road, Santa Cruz, CA 95060, USA; tel: +1 831 420 3966; fax: +1 831 420 3977. e-mail: gregory.charrier{at}noaa.gov.

In order to explore the population genetic structure of pollack (Pollachius pollachius) along the European coast, of 282 fish sampled from four locations along the Atlantic French coast and from one location off southern Norway were genotyped at six microsatellite loci. The limited genetic differentiation among samples may be due to high levels of larval dispersal, through passive drift with oceanic currents. Alternatively, populations may have diverged too recently for significant genetic differentiation to have become evident. Furthermore, small sample sizes and the limited number of loci may have hampered the detection of genetic structure. Nevertheless, a weak but significant genetic differentiation was detected between samples originating from the western English Channel and the Bay of Biscay.

Keywords: genetic structure, microsatellites, Pollachius pollachius

Received 25 July 2005; accepted 26 July 2006.


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