SPAWNING INTENSITY AND STRUCTURE OF PARENTAL STOCK OF THE WESTERN BERING SEA WALLEYE POLLOCK IN 2018
https://doi.org/10.15853/2072-8212.2019.53.34-40
Abstract
Spatial distribution of walleye pollock eggs in early May of 2018 in Karaginsky and Olyutorsky Gulfs was examined. General aggregations of developing eggs were observed in the western part of Olyutorsky Gulf and southwestward from the Gauvin Peninsula. The eggs developed in the temperature range from –0.4 to 2.3 °C and salinity 32.4–33.8‰. Embryos at the stage of formin the embryonal stripe dominated in the net catches, what indicates of finishing the mass spawning soon. The basis of the spawning stock consisted of the 6–9-yearold fish with the body length 41–52 cm. The abundence of the spawning stock 2018 is demonstrated as a result of estimation by different methods.
About the Authors
N. P. Sergeeva
Kamchatka Branch of All-Russian Research Institute of Fisheries and Oceanography (“KamchatNIRO”)
Russian Federation
Russian Federation
O. B. Tepnin
Kamchatka Branch of All-Russian Research Institute of Fisheries and Oceanography (“KamchatNIRO”)
Russian Federation
Russian Federation
S. A. Veselov
Kamchatka Branch of All-Russian Research Institute of Fisheries and Oceanography (“KamchatNIRO”)
Russian Federation
Russian Federation
A. V. Smirnov
Pacific Branch of All-Russian Research Institute of Fisheries and Oceanography (“TINRO”)
Russian Federation
Russian Federation
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Review
For citations:
Sergeeva N.P., Tepnin O.B., Veselov S.A., Smirnov A.V. SPAWNING INTENSITY AND STRUCTURE OF PARENTAL STOCK OF THE WESTERN BERING SEA WALLEYE POLLOCK IN 2018. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2019;1(53):34-40. (In Russ.) https://doi.org/10.15853/2072-8212.2019.53.34-40
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