Marine Biology

, Volume 130, Issue 2, pp 171–180

Genetic differentiation in Hediste diversicolor (Polychaeta: Nereididae) for the North Sea and the Baltic Sea

  • M. Röhner
  • R. Bastrop
  • K. Jürss
Article

DOI: 10.1007/s002270050236

Cite this article as:
Röhner, M., Bastrop, R. & Jürss, K. Marine Biology (1997) 130: 171. doi:10.1007/s002270050236

Abstract

Genetic differentiation between North Sea and Baltic Sea Hediste diversicolor (O.F. Müller, 1776) (Polychaeta: Nereididae) populations was studied by allozyme electrophoresis on starch gel. Thirteen loci were analyzed in eight populations. The level of genetic variation was very low (mean Ho = 0.000 to 0.015). Differentiation between H. diversicolor populations is quite high (FST = 0.892) and reflected by three enzyme loci (MDH-I*, MDH-II*, IDH-I*). The reduced gene flow (Nm<1) may be explained by the limited dispersal capacity of the species. Regardless of whether found in the North Sea or Baltic Sea, there appear to be two different genetic types which are parapatric or sympatric in some places. The two types hybridize at three localities, but no signs of hybridization have been found at one (Tallinn).

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • M. Röhner
    • 1
  • R. Bastrop
    • 1
  • K. Jürss
    • 1
  1. 1.Universität Rostock, Fachbereich Biologie, Abteilung Stoffwechselphysiologie, Justus-von-Liebig-Weg 8, D-18051 Rostock, GermanyDE