Abstract
According to materials of 1997–2002, the characteristic of the spatial-bathymetric distribution, size and age composition, size and sex structure, and feeding of the Korean flounder Glyptocephalus stelleri in the summer period in waters off Kamchatka in the Sea of Okhotsk (the site from 51°15′ to 57°20′ N, depths of 10–300 m) is given. It is shown that throughout the observation period, maximum catches of this flatfish were constantly observed at two sites of the western Kamchatka shelf (51°20′–53°00′ N and 55°00′–56°00′ N) in the zone exposed to the effect of anticyclonic gyres in the range of depths 101–200 m at the near-bottom temperature below 2°C. Unlike other habitat areas, off the coast of western Kamchatka, G. stelleri in the summer time is quite frequently found at negative temperature values, which is obviously determined by the specifics of thermal conditions of the eastern part of the Sea of Okhotsk. It was established that, in this species of flatfish, sex dimorphism is distinctly pronounced in sizes—males are considerably smaller than females whose relative number among individuals with a length larger than 50 cm reaches 100%. The main items of feeding of G. stelleri at the western Kamchatka shelf in the summer period are oligochaetes.
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Original Russian Text © A.M. Tokranov, 2008, published in Voprosy Ikhtiologii, 2008, Vol. 48, No. 6, pp. 790–801.
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Tokranov, A.M. Specific features of distribution and some features of biology of Korean flounder Glyptocephalus stelleri (Pleuronectidae) in waters off Kamchatka in the Sea of Okhotsk. J. Ichthyol. 48, 759–769 (2008). https://doi.org/10.1134/S0032945208090075
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DOI: https://doi.org/10.1134/S0032945208090075