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Evidence for fine scale genetic structure and estuarine colonisation in a potential high gene flow marine goby (Pomatoschistus minutus)
Pampoulie, C.; Gysels, E.S.; Maes, G.E.; Hellemans, B.; Leentjes, V.; Jones, A.G.; Volckaert, F.A.M.J. (2004). Evidence for fine scale genetic structure and estuarine colonisation in a potential high gene flow marine goby (Pomatoschistus minutus). Heredity 92(5): 434-445. http://dx.doi.org/10.1038/sj.hdy.6800438
In: Heredity. The Genetical Society of Great Britain: London. ISSN 0018-067X; e-ISSN 1365-2540, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    AN, North Atlantic
    Biological phenomena > Mutations
    Disciplines > Biology > Genetics > Population genetics > Gene flow
    Enzymes > Allozymes
    Microsatellites
    Nucleic compounds > Nucleic acids > Dna > Satellite dna > Microsatellites
    Pomatoschistus minutus (Pallas, 1770) [WoRMS]
    North Atlantic Ocean [Marine Regions]
    Marien/Kust
Author keywords
    allele shift; allozymes; gene flow; microsatellites; North AtlanticOcean; sand goby
Auteurs  Top 
  • Pampoulie, C.
  • Gysels, E.S., meer
  • Maes, G.E., meer
  • Hellemans, B., meer
  • Leentjes, V.
  • Jones, A.G.
  • Volckaert, F.A.M.J., meer
Abstract
    Marine fish seem to experience evolutionary processes that are expected to produce genetically homogeneous populations. We have assessed genetic diversity and differentiation in 15 samples of the sand goby Pomatoschistus minutus (Pallas, 1770) (Gobiidae, Teleostei) from four major habitats within the Southern Bight of the North Sea, using seven microsatellite and 13 allozyme loci. Despite its high dispersal potential, microsatellite loci revealed a moderate level of differentiation (overall FST=0.026; overall RST=0.058). Both hierarchical analysis of molecular variance and multivariate analysis revealed significant differentiation (P<0.01) between estuarine, coastal and marine samples with microsatellites, but not with allozymes. Comparison among the different estimators of differentiation (FST and RST) pointed to possible historical events and contemporary habitat fragmentation. Samples were assigned to two breeding units in the estuary and coastal region. Despite this classification, there were indications of a complex and dynamic spatiotemporal structure, which is, most likely, determined by historical events and local oceanic currents.
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