Specific Features of Distribution, Ecology, and Dynamics of Catches of Blotched Snailfish Crystallichthys mirabilis (Liparidae) in Pacific Waters off the Northern Kuril Islands and Southeastern Kamchatka

摘要

Based on materials of 1992-2002, data on the spatial-bathymetric distribution and size-age composition of blotched snailfish Crysta/lichthys mirabilis and species accompanying it in catches in Pacific waters off the northern Kuril Islands and southeastern Kamchatka are presented. This relatively large representative of the family Liparidae (maximum length in catches 50 cm, body weight 2150 g) is found throughout the examined area in the depth interval of 76—755 m at near-bottom temperature of— 1.2to +4.2°C. Maximum catches (over 200—500 individuals or 180-280 kg per hour trawling) year round are recorded off the southeastern extremity of Kamchatka, from the oceanic side of the Shumshu and Paramushir islands and on the beam of the Fourth Kuril Strait in the bathymetric range of 151-350 m. The magnitude of its catches in the examined area is subjected to interannual, seasonal, and diurnal dynamics.