Maturation of flounder species in the northern part of the Sea of Okhotsk in 1997

Maturation of flounder species in the northern part of the Sea of Okhotsk in 1997–2019

Published:2023-10-24 Issue:68 Volume: Page:90-111
ISSN:2782-6236
Container-title:The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean
language:
Short-container-title:Issledovaniâ vodnyh biologičeskih resursov Kamčatki i Severo-Zapadnoj časti Tihogo okeana

Author:

Yusupov R. R.¹,Semenov Yu. K.²

Affiliation:

1. Institute of biological problems of the North, Far Eastern Branch of the Russian Academy of Sciences

2. Magadan Branch of Russian Federal Research Institute of Fisheries and Oceanography (MagadanNIRO)

Abstract

Data on the rate of maturation during the linear growth of flounder species in the northern part of the Sea of Okhotsk based on samples collected in 1997–2019 are given. These data contradict the idea developed in the literature about the flounders of the northern part of the Sea of Okhotsk as small-sized, early maturating species. The flounders reach sexual maturity when they reach approximately the same size and age as in northern populations of the same species. In comparison with the populations of the corresponding species in the south of the range, all of them are characterized by relatively late and long maturation, and become fully mature shortly before the end of their life cycle.

Publisher

Kamchatka Research Institute of Fisheries and Oceanography

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