СТАДОСПЕЦИФИЧНОСТЬ И ТРОФИЧЕСКИЙ СТАТУС СЕЛЬДИ В ПЕЛАГИАЛИ СЕВЕРНОЙ ЧАСТИ ОХОТСКОГО МОРЯ

• Main Authors: Горбатенко, Константин, Мельников, Игорь, Кияшко, Сергей, Лаженцев, Артем, Асеева, Надежда
• Format: Text
• Language: unknown
• Published: Федеральное государственное унитарное предприятие «Тихоокеанский научно-исследовательский рыбохозяйственный центр» 2013
• Subjects: ОХОТСКОЕ МОРЕ; СЕЛЬДЬ; ИЗОТОПЫ; Okhotsk; Pacific; Kashevarov Bank; Gizhiga; TINRO Basin; Kamchatka; okhotsk sea
• Online Access: http://cyberleninka.ru/article/n/stadospetsifichnost-i-troficheskiy-status-seldi-v-pelagiali-severnoy-chasti-ohotskogo-morya; http://cyberleninka.ru/article_covers/14345630.png

На основе материалов, собранных из траловых уловов в Охотском море в период с 2003 по 2010 г., уточнен трофический статус охотской и гижигинско-камчатской сельди по данным анализа питания и соотношений стабильных изотопов углерода и азота. Оценена возможность применения изотопного анализа для исследования стадоспецифичности сельди северной части Охотского моря. Origin of mixed feeding aggregations of pacific herring in the Okhotsk Sea is analyzed by isotopic composition of carbon and nitrogen in its tissues. The samples were collected from trawl catches in 2003–2010. There is concluded that concentration of the heavy isotopes 13C and 15N in the herring tissues is significantly different between the western (Okhotsk area) and eastern (Gizhiga-Kamchatka area) parts of the northern Okhotsk Sea in spring, and that fall-winter feeding aggregations at the western slope of the TINRO Basin and at the Kashevarov Bank represent a mixture of the Gizhiga-Kamchatka herring and the eastern portion of the Okhotsk herring. The ratio of these populations in the mixed aggregations depends on their stocks and on location of the feeding grounds. The herring from Okhotsk population dominated at the Kashevarov Bank, where the main fishing grounds were located, but the feeding aggregations between 150–155є E were formed mainly by the herring from the Gizhiga-Kamchatka population (> 90 %), because the stock of this population was high in 2003–2010. More detailed study of seasonal and inter-annual variability of these indicators is necessary, because they could be useful for understanding of the herring distribution and migrations.