A comparison of genetic diversity levels in marine, freshwater, and anadromous fishes

The results showed that while average total heterozygosity was approximately equal in freshwater and marine species, subpopulation heterozygosity was significantly less in the former group

R. D. Ward; M. Woodwark; D. O. F. Skibinski


Scholarcy highlights

  • Electrophoretic data were analysed from 49 species of freshwater fish, 57 species of marine fish, and seven anadromous species
  • It is likely that marine subpopulations exchange between 10 and 100 times more migrants per generation than freshwater subpopulations, presumably because of the relative absence of barriers to dispersal in the marine environment
  • The few andromous species that have been analysed show intermediate levels of GST

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