Ecology of Arctic cod Boreogadus saida (Gadiformes, Gadidae) and its fishery potential in Kara Sea

According to the bottom trawl-survey data, 97% of the ichthyomass in the southwestern region of the Kara Sea are composed of the Arctic cod Boreogadus saida ; its stock is significantly higher than the previously registered resources. The Arctic cod is most unevenly distributed across the water area...

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Bibliographic Details
Published inJournal of ichthyology Vol. 57; no. 5; pp. 721 - 729
Main Authors Antonov, N. P., Kuznetsov, V. V., Kuznetsova, E. N., Tatarnikov, V. A., Belorustseva, S. A., Mitenkova, L. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2017
Springer Nature B.V
Subjects
Age composition
Age structure
Arctogadus glacialis
Biomedical and Life Sciences
Boreogadus saida
Bottom trawling
Ecological aggregations
Fish
Fisheries
Food chains
Growth rate
Life Sciences
Nitrogen
Polar environments
Surveying
Trawlnets
Zoology
Arctic region
Arctic cod
biomass
Kara Sea
length
weight
distribution
age
food
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Summary:According to the bottom trawl-survey data, 97% of the ichthyomass in the southwestern region of the Kara Sea are composed of the Arctic cod Boreogadus saida ; its stock is significantly higher than the previously registered resources. The Arctic cod is most unevenly distributed across the water area and capable to form the high-density aggregations, which can be caught by the targeted trawls. A wide range of the age composition (0+−6+), the size-age composition, and the growth rates of the Arctic cod in the trawl catches in the Kara Sea, which are different from those in the fish in the adjacent Barents Sea, can indicate their assignment of the Arctic cod in these seas to different populations.
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945217050022