On possible change in regional composition of catches for pink salmon Oncorhynchus gorbuscha at Iturup Island in 2015
https://doi.org/10.26428/1606-9919-202-472-479
Abstract
Dynamics of catches and biological parameters are analyzed for pink salmon during their approaches to the Kuril Bay (Iturup Island, Kuril Islands) in 2015, as the body length, female fecundity, and inter-sclerite distance in the first annual growth zone of scales. These parameters were compared between the fish caught at the outer boundary of the bay and at the mouths of spawning rivers. The scale growth patterns atypical for local herds of pink salmon and heightened fertility of females were observed in the catches obtained in the external part of the bay; these fish migrated obviously to another area of their reproduction.
Supporting agencies: The author is grateful to I.E. Onishchenko from the Salmon laboratory of Sakhalin Research Institute of Fisheries and Oceanography (SakhNIRO) for the training in laboratory processing of fish scales. Special thanks are extended to the academic supervisor, professor V.N. Ivankov, for his consultations on the issues concerning the article in the times of post-graduate studies at Far Eastern Federal University (FEFU).
About the Author
D. A. Kaev
Far Eastern Federal University
Russian Federation
Russian Federation
Danil A. Kaev, graduate student
10, Ajax Bay, Vladivostok, 690922
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For citations:
Kaev D.A. On possible change in regional composition of catches for pink salmon Oncorhynchus gorbuscha at Iturup Island in 2015. Izvestiya TINRO. 2025;205(3):472-479. (In Russ.) https://doi.org/10.26428/1606-9919-202-472-479
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