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Regional genetic differentiation in the blue mussel from the Baltic Sea area
Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
Göteborgs universitet.
Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Biology.
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2016 (English)In: Estuarine, Coastal and Shelf Science, ISSN 0272-7714, E-ISSN 1096-0015Article in journal (Refereed) Epub ahead of printText
Abstract [en]

Connectivity plays an important role in shaping the genetic structure and in evolution of local adaptation. In the marine environment barriers to gene flow are in most cases caused by gradients in environmental factors, ocean circulation and/or larval behavior. Despite the long pelagic larval stages, with high potential for dispersal many marine organisms have been shown to have a fine scale genetic structuring. In this study, by using a combination of high-resolution genetic markers, species hybridization data and biophysical modeling we can present a comprehensive picture of the evolutionary landscape for a keystone species in the Baltic Sea, the blue mussel. We identified distinct genetic differentiation between the West Coast, Baltic Proper and Bothnian Sea regions, with lower gene diversity in the Bothnian Sea. Oceanographic connectivity together with salinity and to some extent species identity provides explanations for the genetic differentiation between the West Coast and the Baltic Sea (Baltic Proper and Bothnian Sea). The genetic differentiation between the Baltic Proper and Bothnian Sea cannot be directly explained by oceanographic connectivity, species identity or salinity, while the lower connectivity to the Bothnian Sea may explain the lower gene diversity. © 2016.

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Keyword [en]
AFLP, Baltic Sea, Barrier, Gene flow, Oceanographic connectivity, Population genetics
National Category
Environmental Sciences
Research subject
Environmental Studies; Baltic and East European studies
URN: urn:nbn:se:sh:diva-30647DOI: 10.1016/j.ecss.2016.06.016Local ID: 1328/42/2010OAI: diva2:949491
Evolutionary adaptation to environmental disturbance in marine ecosystems: genetic ecotoxicology in the Baltic Sea
The Foundation for Baltic and East European Studies, A063-10
Available from: 2016-07-20 Created: 2016-07-19 Last updated: 2016-09-22Bibliographically approved

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Larsson, JosefineGrahn, MatsLönn, Mikael
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