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ICES Journal of Marine Science: Journal du Conseil 2005 62(8):1699-1704; doi:10.1016/j.icesjms.2005.06.001
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© 2005 International Council for the Exploration of the Sea

Population structure of Merluccius merluccius along the Iberian Peninsula coast

Ana G.F. Castilloa, Paula Alvarezb and Eva Garcia-Vazqueza,*

a Departamento de Biologia Funcional, Universidad de Oviedo C/Julian Claveria s/n, 33006 Oviedo, Spain
b AZTI-Technological Institute for Fisheries and Food, Herrera Kaia Portualdea z/g, 20110 Pasaia (Gipuzkoa), Basque Country, Spain

*tel: +34 943004800; tel: +34 985102726; fax: +34 985103534. e-mail: egv{at}fq.uniovi.es; palvarez{at}pas.azti.es.

Prespawning hake caught in eight locations around the Iberian Peninsula were genetically analysed. The distribution of variation at five microsatellite loci suggests that the species follows a population model of isolation by distance in this geographical area. Three different areas can be identified: the Mediterranean Sea, the Portuguese coast, and the Cantabric Sea. The lack of differentiation between samples caught in the VIIIa,b,d and in the VIIIc ICES Areas suggests that, based on genetic information, the boundary between northern and southern stocks of European hake should be reconsidered.

Keywords: Iberian Peninsula, Merluccius merluccius, microsatellites, population model, stock structure

Received 22 April 2004; accepted 10 June 2005.


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