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ICES Journal of Marine Science: Journal du Conseil 2006 63(7):1286-1289; doi:10.1016/j.icesjms.2006.04.003
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© 2006 International Council for the Exploration of the Sea

Genetic history of the population of Atlantic salmon, Salmo salar L., under restoration in the Connecticut River, USA

Fernando Ayllona, Jose L. Martineza, Francis Juanesb, Stephen Gephardc and Eva Garcia-Vazqueza,*

a Departamento de Biologia Funcional, Facultad de Medicina, Universidad de Oviedo 33006 Oviedo, Spain
b University of Massachusetts, Department of Natural Resources Conservation Amherst, MA 01003-4210, USA
c Connecticut Department of Environmental Protection, Inland Fisheries Division PO Box 719, Old Lyme, CT 06371, USA

*Correspondence to E. Garcia-Vazquez: tel: +34 985 102726; fax: +34 985 103534. e-mail: egv{at}fq.uniovi.es.

The Connecticut River lost its Atlantic salmon population as a result of human activity 200 years ago. Cultured stocks, derived mainly from the Penobscot River, were employed to restore the population, and an annual run of salmon has been successfully re-established, although the population is not yet self-sustaining. We examined variation at microsatellite loci in historical scale and modern tissue samples to evaluate the degree and direction of any genetic changes that have occurred in the introduced population. The current genetic pattern of the Connecticut River population is very similar to that of its Penobscot River donor population. We found no differences in heterozygosity, mean number of alleles per locus, number of migrants, or FST values between the two populations, suggesting that no genetic bottlenecks had occurred during the restoration programme.

Keywords: Atlantic salmon, genetic changes, microsatellite loci, population restoration, stock transfer

Received 29 September 2005; accepted 3 April 2006.


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