Abstract
The size and sex composition, diet, and fecundity of Simushir snailfish Polypera simushirae in the Pacific waters of the northern Kuril Islands are considered. In August–November 1997, catches contained individuals with a length of 41–71 (57.0 ± 0.7) cm and a weight of 1200–8800 (4035 ± 171) g. The number of females was higher than that of males at a ratio of 8.4 : 1.0. Simushir snailfish feeds mainly on fish (97.7% of the food weight), in particular, Liparidae (85.3%), including representatives of the genus Careproctus (32.1%) and dimdisc snailfish Elassodiscus tremebundus (29.0%). The individual absolute fecundity varied from 36 683 to 82 992 (57 367 ± 1558) eggs.
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ACKNOWLEDGMENTS
The author is grateful to I.N. Mukhametov (SakhNIRO) for assistance in collecting the material on the biology of Simushir snailfish, as well as to O.P. Shelepova (SakhNIRO) for assistance in counting the number of eggs.
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Translated by D. Zabolotny
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Poltev, Y.N. Biological Characteristics of Simushir Snailfish Polypera simushirae (Liparidae) from the Pacific Waters of the Northern Kuril Islands in Autumn. J. Ichthyol. 62, 236–243 (2022). https://doi.org/10.1134/S0032945222010106
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DOI: https://doi.org/10.1134/S0032945222010106