Russian Journal of Genetics

, Volume 38, Issue 9, pp 1066–1075 | Cite as

Allozyme Diversity and Genetic Divergence of the Dolly Varden Salvelinus malma Walbaum from the Kuril Islands

  • V. T. Omelchenko
  • E. A. Salmenkova
  • S. V. Shedko


Genetic variation was studied in the southern subspecies of the Asian Dolly Varden Salvelinus malma krascheninnikovi from the Kuril Islands. Thirty-six genetic loci controlling 19 enzyme systems were analyzed in 13 Dolly Varden populations from the Shumshu, Paramushir, Onekotan, Rasshua, Simushir, Urup, Iturup, and Kunashir islands. In the studied populations, the proportion of polymorphic loci was 35 to 85% and the mean heterozygosity was 0.104 to 0.173; populations from the Kunashir Island were characterized by maximum heterozygosity. In the island populations examined, significant interpopulation heterogeneity of allele frequencies was found for all studied population pairs. For the all island populations, the interpopulation diversity (GST = 0.188) was comparable to this parameter for the populations from the Kunashir Island only (GST = 0.170). Genetic distances between populations did not correlate with the corresponding geographical distances, which indicates the lack of a pronounced gene exchange between the island populations. Cluster analysis and multidimensional scaling based on genetic distances did not reveal clear groups among the studied populations but indicated greater similarity within the Iturup–Simushir–Urup–Paramushir group and a greater genetic divergence of the Kunashir, Onekotan, Rasshua, and especially Shumshu populations. In the Shumshu population, allele frequencies indicate the admixture of genes of the northern Dolly Varden. The observed pattern of genetic differentiation was probably caused largely by genetic drift under the conditions of a limited gene flow because of homing (which is typical of the Dolly Varden) and the presence of isolated nonanadromous populations. The population–genetic analysis of the Dolly Varden from the Kuril Islands does not give grounds to distinguish any other isolated char species in this region than S. malma, which is represented by the southern form S. m. krascheninnikovi with an admixture of the northern form S. m. malma in the Shumshu Island.


Genetic Distance Kuril Island Island Population Allozyme Diversity Population Pair 
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Copyright information

© MAIK “Nauka/Interperiodica” 2002

Authors and Affiliations

  • V. T. Omelchenko
    • 1
  • E. A. Salmenkova
    • 2
  • S. V. Shedko
    • 3
  1. 1.Institute of Marine BiologyRussian Academy of SciencesVladivostokRussia
  2. 2.Vavilov Institute of General GeneticsRussian Academy of SciencesMoscowRussia
  3. 3.Institute of Biology and Soil SciencesRussian Academy of SciencesVladivostokRussia

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