Abstract
The features are discussed of the growth of threaded sculpin Gymnocanthus pistilliger in the southern part of its range, in the Sea of Japan. Several methods were tested to determine the age of this species. The improved approach is suggested for determinating the age of threaded sculpin by annual increments on sagitta using thin cross-sections, characteristics of optical density in different zones of otolith growth, and their positions relative to otolith center. It was demonstrated that the growth rate of threaded sculpin in the waters of southern Primorye was significantly higher than in the northern part of its range: the males reached a length of about 20 cm and the females about 22 cm at the age 5+. The maximum length of individuals, 26 cm in the males and 31 cm in the females, significantly exceed those known from literature. The longevity of threaded sculpin calculated for maximum size is 12–13 yr for the waters of Primorye.
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Original Russian Text © V.A. Shelekhov, V.V. Panchenko, 2007, published in Voprosy Ikhtiologii, 2007, Vol. 47, No. 2, pp. 228–237.
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Shelekhov, V.A., Panchenko, V.V. Age and growth of threaded sculpin Gymnocanthus pistilliger (Cottidae) in the southern Primorye (Sea of Japan). J. Ichthyol. 47, 175–183 (2007). https://doi.org/10.1134/S0032945207020051
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DOI: https://doi.org/10.1134/S0032945207020051