Modern characteristic of the growth of the Greenland Turbot in the northwestern part of the Bering Sea
Abstract
A study on the biological state of the Greenland turbot was carried out based on the bottom survey data collected at the ≪TINRO≫ research vessel in 2015 in the northwestern part of the Bering Sea. Size and age characteristics of the Greenland turbot aggregations are considered depending on the depth of the capture. The characteristic of the rate of its linear and weight growth is given, variability in the sex ratio is analyzed depending on the size and age. A distinctly pronounced increase in the size-age indices with depth is considered typical for the Greenland turbot in the northwestern part of the Bering Sea. The highest rate of linear growth of turbot is observed in the first years of life, then decreases slight. The rate of weight growth increases with age, in females more than in males. The beginning of maturation of the Greenland turbot in the northwestern part of the Bering Sea is considered at the age of 5 years, male turbot reaches maturity at the age of 8, females — at the age of 10 years. Males mature faster for 2 years earlier than females and much earlier than females drop out of the population. Large old age fish are represented only by females. Comparative analysis of the obtained results with those presented in the literature showed the similarity of the linear halibut growth data of the northwestern part of the Bering Sea and the turbot of the Pacific waters of southeastern Kamchatka and the Northern Kurile Islands. According to the parameters of the “lengthmass” dependence equation, the Greenland turbot of the northwestern part of the Bering Sea is close to the turbot of the eastern part of the Bering Sea and the Aleutian Islands.
About the Authors
E. N. Kuznetsova
Russian Federal Research Institute of Fisheries and Oceanography (FSBSI «VNIRO»)
Russian Federation
Russian Federation
Moscow
N. P. Antonov
Russian Federal Research Institute of Fisheries and Oceanography (FSBSI «VNIRO»)
Russian Federation
Russian Federation
Moscow
O. A. Maznikova
Russian Federal Research Institute of Fisheries and Oceanography (FSBSI «VNIRO»)
Russian Federation
Russian Federation
Moscow
A. O. Trofimova
Russian Federal Research Institute of Fisheries and Oceanography (FSBSI «VNIRO»)
Russian Federation
Russian Federation
Moscow
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Review
For citations:
Kuznetsova E.N., Antonov N.P., Maznikova O.A., Trofimova A.O. Modern characteristic of the growth of the Greenland Turbot in the northwestern part of the Bering Sea. Trudy VNIRO. 2018;171:80-94. (In Russ.)
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