Abnormalities in the ovaries of sockeye salmon spawners in the Kamchatka River in 2019
https://doi.org/10.15853/2072-8212.2021.60.69-73
Abstract
Based on histological analysis of the ovaries of sockeye salmon spawners in the Kamchatka River, numerous abnormalities leading to resorption are shown in the structure of vitellogenic oocytes. Fertility of mature female sockeye salmon decreases due to the resorption of the vitellogenic oocytes. Presence of ovaries with abnormal oocytes implies oocyte resorption in fish being a phenomenon associated with mechanism of natural regulation of final fertility. Such mechanism is required in view of changing fish body length and weight in the sockeye salmon of the Kamchatka River. Numerous abnormalities in the ovaries indicate of a decreasing reproductive capacity of spawners and commercial quality of the eggs.
About the Authors
S. B. Gorodovskaya
Kamchatka branch of Russian Research Institute of Fisheries and Oceanography
Russian Federation
Russian Federation
Sofia B. Gorodovskaya, Senior scientist
683000 Petropavlovsk-Kamchatsky, Naberezhnaya, 18
L. N. Smorodina
Kamchatka branch of Russian Research Institute of Fisheries and Oceanography
Russian Federation
Russian Federation
Larisa N. Smorodina, engineer
683000 Petropavlovsk-Kamchatsky, Naberezhnaya, 18
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Review
For citations:
Gorodovskaya S.B., Smorodina L.N. Abnormalities in the ovaries of sockeye salmon spawners in the Kamchatka River in 2019. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2021;(60):69-73. (In Russ.) https://doi.org/10.15853/2072-8212.2021.60.69-73
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