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Phylogeography of the common goby, Pomatoschistus microps, with particular emphasis on the colonization of the Mediterranean and the North Sea
Gysels, E.S.; Hellemans, B.; Pampoulie, C.; Volckaert, F.A.M.J. (2004). Phylogeography of the common goby, Pomatoschistus microps, with particular emphasis on the colonization of the Mediterranean and the North Sea. Mol. Ecol. 13(2): 403-417
In: Molecular Ecology. Blackwell: Oxford. ISSN 0962-1083, more
Peer reviewed article  

Also published as
  • Gysels, E.S.; Hellemans, B.; Pampoulie, C.; Volckaert, F.A.M.J. [s.d.]. Phylogeography of the common goby, Pomatoschistus microps, with particular emphasis on the colonization of the Mediterranean and the North Sea, in: , more

Available in Authors 
    VLIZ: Open Repository 54422 [ OMA ]

Keywords

Authors  Top 
  • Gysels, E.S., more
  • Hellemans, B., more
  • Pampoulie, C.
  • Volckaert, F.A.M.J., more

Abstract
    The phylogeographical patterns of a small marine fish, the common goby, Pomatoschistus microps, were assessed at 12 sites along the northeastern Atlantic coasts and the western Mediterranean Sea. A combination of two genetic markers was employed: cellulose acetate allozyme electrophoresis (CAGE) and sequence analysis of a 289 bp fragment of the mitochondrial locus cytochrome b . Both markers were congruent in revealing significant differences between samples (global FST = 0.247 for the allozymes and [Greek symbol]Phi FST = 0.437 for the mitochondrial DNA data) and a pattern of isolation-by-distance. Phylogeographical analyses yielded a shallow branching structure with four groups. Three of those were confined to the Atlantic basin and showed a star-like pattern. The fourth group contained a central haplotype occurring at the edges of the species’ distribution, accompanied by a few more rare variants, which were restricted to the Mediterranean Sea. A genetic break was observed around the British Isles, with distinct haplotypes dominating at either side of the English Channel. A significantly negative correlation between the degree of genetic diversity and latitude was recorded both for mitochondrial DNA (mtDNA) and allozymes in the Atlantic basin. Gene flow analysis suggested that recolonization of the North Sea and the coasts of western Scotland and Ireland may have taken place from a glacial refugium in the Southern Bight of the North Sea. These results are discussed in the perspective of possible postglacial migration routes of marine fish along the northeastern Atlantic coasts.

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