Journal
JOURNAL OF PHYCOLOGY
Volume 41, Issue 4, Pages 900-905Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.0022-3646.2005.04221.x
Keywords
fucoid; genetic differentiation; genetic taxonomy; microsatellite; Phaeophyceae; species complex
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All traditional markers, both phenotypic and phylogenetic, have failed to discriminate between the taxa composing the Fucus vesiculosus L., F. spiralis L., and F. ceranoides L. species complex, particularly in Brittany (France), so we used five microsatellite markers to compare the allelic frequencies of populations of the three taxa in this region. The aim of this study was to assess whether the different populations were grouped according to their geographical location, their habitat (open coast versus estuary), or their a priori taxonomic assignment. Species-specific alleles were identified at one locus, demonstrating the utility of microsatellite markers for recognizing the three taxa in Brittany. Moreover, our results clearly support the separation of F. vesiculosus, F. spiralis, and F. ceranoides into distinct species, independently of geography. We also identified genetic differentiation between estuarine and coastal populations of F. vesiculosus.
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