Some peculiarities of saffron cod Eleginus gracilis (Tilesius) biology and distribution on South-East Kamchatka
https://doi.org/10.15853/2072-8212.2020.57.99-116
Abstract
Analysis of Danish seine catches from the coastal waters of South-East Kamchatka has revealed all seasonal distribution of saffron cod connected to the sites of the continental sandbanks influenced by aquatic vortexes with increased benthic biomass, where the catches could reach 2.5 t/fishing operation. Based on the data of the trawl and Danish seine surveying, the stock abundance, the occurence frequency, the catches of saffron cod and the contribution into the total catch in the area mentioned increased in the fall-winter period, but could not be characterized as significant. In the period of the research (2003–2018) the Danish seine catches of saffron cod varied as 1–189 t, averaged 31.8 t. The fish in the Danish seine catches had the body length from 11 to 56 cm and the body weight from 20 to 750 г. The mean length and weight of saffron cod in summer was 30.8 cm and 241.7 g and in winter – 31.2 cm and 301.6 g respectively. Occurrence of independent reproductive groups of saffron cod in the coastal bays and on the shelf of South-East Kamchatka can be suggested based on the data of stock abundance distribution, differences in the size composition and the time of maturity.
About the Author
O. V. Novikova
Kamchatka Branch of Russian Research Institute of Fisheries and Oceanography (“KamchatNIRO”)
Russian Federation
Russian Federation
Leading Scientist, Ph. D. (Biology)
683000 Petropavlovsk-Kamchatsky, Naberezhnaya, 18
Tel./fax: (4152) 41-27-01, 42-19-88
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For citations:
Novikova O.V. Some peculiarities of saffron cod Eleginus gracilis (Tilesius) biology and distribution on South-East Kamchatka. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2020;57(57):99-116. (In Russ.) https://doi.org/10.15853/2072-8212.2020.57.99-116
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