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ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on December 17, 2007
ICES Journal of Marine Science: Journal du Conseil 2008 65(1):12-16; doi:10.1093/icesjms/fsm178
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© 2007 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Genetic structure of Octopus vulgaris around the Iberian Peninsula and Canary Islands as indicated by microsatellite DNA variation

C. Cabranes1,, P. Fernandez-Rueda1 and J. L. Martínez2

1 Centro de Experimentación Pesquera, Consejería de Medio Rural y Pesca, Avenida Principe de Asturias s/n, 33212 Gijón, Asturias, Spain
2 Unidad de Secuenciación, Servicios Científico-Técnicos, Universidad de Oviedo, Campus "El Cristo", 33006 Oviedo, Asturias, Spain

Correspondence to C. Cabranes: tel: +34 985 319711; fax: +34 985 312899; e-mail: carmecb{at}princast.es

Cabranes, C., Fernandez-Rueda, P., and Martínez, J. L. 2008. Genetic structure of Octopus vulgaris around the Iberian Peninsula and Canary Islands as indicated by microsatellite DNA variation. – ICES Journal of Marine Science, 65: 12–16.

Microsatellite DNA markers were used for a genetic study of Octopus vulgaris, a cephalopod species of great commercial interest to Spain and Portugal, and therefore subjected to intensive fishing. Improving the demographic knowledge of marine resources supports more-responsible management and conservation. Genetic variation at five microsatellite loci screened in six samples from NE Atlantic and Mediterranean coasts of the Iberian Peninsula was high [mean number of alleles = 18.3, mean He = 0.874]. Analysis of the microsatellites allowed significant subpopulation structure to be identified, consistent with an isolation-by-distance model for Atlantic populations. Differences between pairs of samples separated by <200 km were not significant. From a fisheries management perspective, the results support coordinated management of neighbouring stocks of O. vulgaris around the Iberian Peninsula.

Keywords: genetic structure, microsatellite DNA, Octopus vulgaris, population differentiation

Received 6 August 2007; accepted 6 November 2007; advance access publication 17 December 2007.


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