Особенности летне-осеннего распределения и состояние ресурсов палтусов в Охотском море и у Курильских островов в 2000 г.

• Main Author: Тупоногов, В.
• Format: Text
• Language: unknown
• Published: Федеральное государственное унитарное предприятие «Тихоокеанский научно-исследовательский рыбохозяйственный центр» 2003
• Subjects: Okhotsk; Pacific; Kamchatka; okhotsk sea; Turbot
• Online Access: http://cyberleninka.ru/article/n/osobennosti-letne-osennego-raspredeleniya-i-sostoyanie-resursov-paltusov-v-ohotskom-more-i-u-kurilskih-ostrovov-v-2000-g; http://cyberleninka.ru/article_covers/9127464.png

По результатам донных траловых съёмок комплексной охотоморской экспедиции в июле-ноябре 2000 г. на 5 судах рассмотрены особенности распределения, размерно-массового состава и биологического состояния 4 видов палтусов чёрного, белокорого и 2 видов стрелозубых палтусов. Биомасса их на исследованной площади составила соответственно 105 тыс. т, 16,6, 18,6 тыс. т. Distribution, length-mass structure and biological condition of four species of halibut pacific black halibut (turbot) (Reinhardtius hippoglossoides matsuurae), Pacific halibut (Нippoglossus stenolepis), Kamchatka flounder (Atheresthes evermanni), arrowtooth (American) flounder (Atheresthes stomias) are described on the base of results of the bottom trawl survey in the Okhotsk Sea and Kuril Islands conducted by 5 research vessels of TINRO-center, SakhNIRO, and KamchatNIRO in July-November, 2000. Pacific black halibut met on depths from 2530 to 1000 m (adults were mostly deeper than 320350 m), pacific halibut from 41101 to 342410 m, Kamchatka flounder from 30315 to 540749 m, American flounder from 321325 to 409410 m. The maximal congestions and average density of distribution of the halibuts were observed at the coast of the western Kamchatka (black and pacific halibuts had the density > 5 t/km2). The black halibut in the areas of congestions at the western Kamchatka had body length 13.597.0 cm and weight 0.0213.85 kg. The length of pacific halibut in catches was from 2228 to 106135 cm. The length of Kamchatka flounder was from 926 to 64 cm. The biomass of the pacific black halibut, pacific halibut, Kamchatka flounder and arrowtooth flounder was estimated, accordingly, as 105 th. t, 16.6 th. t and 18.6 th. t. The summary biomass of all these halibuts over the surveyed area with square 812.8 th. km2 in 2000 was about 140 th. t (about 4 % of total ichthyomass). In the period 19972000, the share of black halibut had decreased from 90 % to 75 %, the shares of pacific halibut, Kamchatka flounder and arrowtooth flounder had increased from 5 % to 1213 %.