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Genetic monitoring of pink salmon Oncorhynchus gorbuscha populations of northern coast of the Okhotsk sea

Golovanov I.S., Marchenko S.L., Pustovoit S.P.

 


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Results of genetic monitoring of pink salmon populations breeding in the rivers Taui Bay, Sea of Okhotsk (1993–2004) are analyzed. Statistically significant heterogeneity of samples identified according to gene frequencies are found out only for pink salmon generations of even years. Genetic differentiation of the samples of even years (GST = 1,39 % 0,41) is higher than that of odd years (GST = 0,74 ± 0,09). At the same time for the parameter of genetic variability (heterozygosity) the regularity is opposite (0,0726 ± 0,02564 vs. 0,08760 ± 0,01950). Hence, at a lower heterozygosity the samplings of even years are characterized by higher genetic differences than the samplings of odd years. Besides that the interpopulation part in the general size of genetic variety is always practically less than both within-year and interannual that causes a low level of interpopulation genetic distinctions. Cluster analysis has found out that the most part of the samples of 2001–2004 are united separately from the samples collected up to 2000. In our opinion the reason is the change of the dominant generation on number and the changes of gene frequencies accompanying it.

Tsitologiya i Genetika 2009, vol. 43, no. 6, pp. 18-27

E-mail: pustov ibpn.ru

Golovanov I.S., Marchenko S.L., Pustovoit S.P. Genetic monitoring of pink salmon Oncorhynchus gorbuscha populations of northern coast of the Okhotsk sea, Tsitol Genet., 2009, vol. 43, no. 6, pp. 18-27.




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