On the population genetic structure of sockeye salmon (Oncorhynchus nerka) in the Kurile Lake
https://doi.org/10.15853/2072-8212.2025.76.41-56
EDN: CSEBYO
Abstract
Genetic structure of sockeye salmon population in the Kurile Lake was examined for 9 microsatellite loci. Average estimates of heterozygosity for different loci ranged from 0.260 to 0.906. Pairwise differentiation (Fst) analysis showed differences between samples of different seasonal forms only. The results of the study based on Bayesian clustering of samples in the software package “Structure” allowed us to identify two clearly separating clusters coinciding with the separation of samples by spawning time. The results revealed that all samples of the early run had passed the bottle-neck stage. The observed decline in stock abundance is most likely relatively recent.
About the Authors
O. A. Pilganchuk
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography
Russian Federation
Russian Federation
Oksana A. Pilganchuk – Ph. D. (Biology), Head of Lab.
Petropavlovsk-Kamchatsky
V. V. Kryzhenovskaya
Vitus Bering Kamchatka State University
Russian Federation
Russian Federation
Valentina V. Kryzhenovskaya – Masterʼs degree student
Petropavlovsk-Kamchatsky
A. D. Denisenko
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography
Russian Federation
Russian Federation
Anastasiya D. Denisenko – Leading Specialist
Petropavlovsk-Kamchatsky
V. V. Savenkov
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography
Russian Federation
Russian Federation
Vladimir V. Savenkov – Leading Specialist
Petropavlovsk-Kamchatsky
U. A. Muravskaya
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography
Russian Federation
Russian Federation
Ulyana O. Muravskaya – Leading Specialist
Petropavlovsk-Kamchatsky
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Pilganchuk O.A., Kryzhenovskaya V.V., Denisenko A.D., Savenkov V.V., Muravskaya U.A. On the population genetic structure of sockeye salmon (Oncorhynchus nerka) in the Kurile Lake. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2025;(76):41-56. (In Russ.) https://doi.org/10.15853/2072-8212.2025.76.41-56. EDN: CSEBYO
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