The Effect of Reproduction Biotopes on the Genetic Differentiation of Populations of Sockeye Salmon <Emphasis Type="Italic">Oncorhynchus nerka</Emphasis> |
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| Authors: | Vl A Brykov N E Polyakova A V Podlesnykh E V Golub’ A P Golub’ O L Zhdanova |
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| Institution: | (1) Institute of Marine Biology, Russian Academy of Sciences, Vladivostok, 69004, Russia;(2) Department of Biochemistry and Biotechnology, Far Eastern State University, Vladivostok, 690000, Russia;(3) Chukotka Research Institute of Fisheries and Oceanography (ChukotNIRO), Anadyr’, 689000, Russia;(4) Institute for Automation and Control Processes, Russian Academy of Sciences, Vladivostok, 690041, Russia |
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| Abstract: | Variation of mitochondrial DNA (mtDNA) was examined in nine populations from three lake-river systems of Chukotka and Kamchatka. Significant differences were found between most of the sockeye salmon samples studied. The genetic differences among populations were not high and often did not correlate with the geographical distances between them. The low population divergence is explained by a short time of existence of most of them, having been formed after the recession of the upper Pleistocene glacier. When the populations were grouped according to their spawning biotopes (river or lake), they in general appeared more genetically similar than upon their grouping by geographical location (the lake-river systems). The differences between the river and lake populations in the lake-river systems increased from north to south.__________Translated from Genetika, Vol. 41, No. 5, 2005, pp. 635–645.Original Russian Text Copyright © 2005 by Brykov, Polyakova, Podlesnykh, E. Golub’, A. Golub’, Zhdanova. |
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