Antarctic krill Euphausia superba (Dana, 1852) and hydrometeorological conditions of its habitat in the water area of the Antarctic peninsula subdistrict
https://doi.org/10.37663/0131-6184-2023-1-44-50
Abstract
The data collected by the authors over the course of the scientific observations conducted as a part of CCALMR program for the Antarctic Peninsula in the Bransfield Strait fishing areas in March-June, 2017, have shown a discrete nature of exploitable krill aggregations. In March, fishing operations were conducted in the eastern part of the Strait, and in June, in the western one. During those months, a SST decrease from –1.7 °С to –2.1 °С at 35.00% salinity has been recorded for the Weddell Sea waters. In May-June, the SST of the Bellingshausen Sea waters was minus 0.3–minus 0.5 °С. In terms of its length composition, the krill was represented by juveniles the Weddell Sea waters and by medium-sized and large individuals in the Bellingshausen Sea waters. Qualitatively different genesis of the waters affected catches per unit effort, which values in the Bellingshausen Sea waters (9.95 t/hour) were higher than in the Weddell Sea waters (7.0-8.4 t/hour). Frequent change in zonal wind direction has an adverse effect on the krill fishing consistency and its catches.
About the Authors
N. N. Zhuk
Azov-Black Sea Branch of VNIRO Federal State Budgetary Institution (AzNIIRH)
Russian Federation
Russian Federation
Candidate of Biological Sciences, Chief Specialist
department "Kerch"
Rostov-on-Don
A. T. Kochergin
Azov-Black Sea Branch of VNIRO Federal State Budgetary Institution (AzNIIRH)
Russian Federation
Russian Federation
Chief Specialist
department "Kerch"
Rostov-on-Don
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For citations:
Zhuk N.N., Kochergin A.T. Antarctic krill Euphausia superba (Dana, 1852) and hydrometeorological conditions of its habitat in the water area of the Antarctic peninsula subdistrict. Fisheries. 2023;(1):44-50. (In Russ.) https://doi.org/10.37663/0131-6184-2023-1-44-50
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