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Genetic structure in lagoons: the effects of habitat discontinuity and low dispersal ability on populations of Atherina boyeri
Milana, V.; Franchini, P.; Luciana, S.; Anguilli, E.; Rossi, A.R. (2012). Genetic structure in lagoons: the effects of habitat discontinuity and low dispersal ability on populations of Atherina boyeri. Mar. Biol. (Berl.) 159(2): 399-411. hdl.handle.net/10.1007/s00227-011-1817-1
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Milana, V.
  • Franchini, P.
  • Luciana, S.
  • Anguilli, E.
  • Rossi, A.R.

Abstract
    Atherina boyeri is a common inhabitant of the Mediterranean brackish and coastal waters. Several recent studies proposed the recognition of three distinct forms/species (one lagoon/freshwater and two marine) within an A. boyeri complex. In this study, we used 10 newly available microsatellite loci to better define the genetic structure of the lagoon form. A total of 428 fishes from 11 lagoons along the Italian and Albanian coasts and three Italian lakes were analyzed. A pronounced genetic spatial structure was confirmed for all considered geographic scales (near, medium and broad). A restricted gene flow was detected, suggesting reduced population connectivity. The comparison of present data and previous studies, based on mtDNA and RAPD markers, allowed a preliminary identification of the roles of recent factors (gene flow, habitat discontinuity and water currents) and past events (e.g., Pleistocene glaciations) in shaping the pattern of genetic differentiation.

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