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A population genetic study of haddock (Melanogrammus aeglefinus) in Northeast Atlantic waters based on isozyme data
Giæver, M.; Forthun, J. (1999). A population genetic study of haddock (Melanogrammus aeglefinus) in Northeast Atlantic waters based on isozyme data. Sarsia 84(2): 89-98
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Giæver, M.
  • Forthun, J.

Abstract
    The genetic population structure of haddock in Northeast Atlantic waters was studied using polymorphic isozyme loci as genetic markers. 3459 specimens from 38 locations were submitted to electrophoresis and genotyped at eight polymorphic isozyme loci. Allele frequency analysis gave no clear indications of a genetic subdivision in the species within the Northeast Atlantic, but some geographic trends were seen: Haddock from Icelandic waters differed somewhat at one locus. The allele frequency differences between the Icelandic sample and the other samples were however small, and large samples, which provide increased statistical power, seem to be necessary in order to enable population discrimination. A tendency of genetic "isolation by distance" was observed in haddock collected in Norwegian fjords. The genetically most deviating sample in the study was collected in the Barents Sea. However, small sample size and hence uncertainty in the allele frequency estimates prohibited firm conclusions on a distinct haddock population in the north.

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