| Summary: | Current Antarctic krill fisheries are carried out in the Atlantic Antarctic using conventional catch methods by means of midwater otter- and beam-trawls or continuous fishing technology. The mesh size in codend of these fishing gears ranges from 11 to 20 mm. As a result of such mesh size variety, there may be net selectivity. Spatial and temporal variability of krill length is observed in the fishing areas; it could overlap differences in the selectivity of fishing gear, including selectivity of mesh size in codends. Difference in the mean krill length in catches was insignificant, when mesh size in codend was 14 mm and conventional and continuous fishing methods were used. However, this difference was statistically significant under conditions of mesh size equaling 14, 16 and 20 mm. The number of small krill individuals was decreasing with the increase of mesh size in codend, and the percentage share of individuals in modal classes was increasing. It is possible that dissimilarities exist between the selectivity of codends with mesh size 14, 16 and 20 mm in relation to Antarctic krill length. However, krill samples, taken for fishery purposes from various fishing gears, can be considered identical and be combined into one unified sample for further investigation. Современный промысел антарктического криля осуществляется в Атлантическом секторе Антарктики традиционными методами с использованием разноглубинных оттер- и бим-тралов или по технологии непрерывного лова. Размер ячеи в мешке у этих орудий лова варьирует от 11 до 20 мм. При такой изменчивости размеров ячеи, вероятно, имеет место селективность сетей. На промысловых участках отмечается пространственная и временная изменчивость размеров криля, которая может скрывать различия в селективных свойствах орудий лова, в том числе и селективность размеров ячеи в мешках. При одинаковом размере ячеи (14 мм) в мешках при традиционной и непрерывной технологиях промысла разница средних размеров криля в уловах была незначительной, а при размере ячеи 14, 16 и 20 мм – ...
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