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Vertical Distribution of the Far East Trepang Apostichopus japonicusin Vostok Bay, Sea of Japan

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Abstract

The abundance, weight, and age structure of aggregations of the Far East trepang Apostichopus japonicuswere studied in Vostok Bay, Sea of Japan, during the first part of September 2000. The highest density of aggregations (8.3 ± 0.5 ind/m2) and biomass (131.88 ± 10.50 g/m2) of animals was characteristic for coastal sites at the depth 0.5–1.5 m. With anincrease in depth the biomass and density of A. japonicusreduced 1.5 and 3 (depth 5–6 m), 220 and 830 times (depth 8–15 m) respectively. The ratio of large animals concurrently increased in the aggregation structure. The specifics of the distribution and spatial variability of the aggregation structure are discussed in relation to uncontrolled fishing of holothurians of large sizes.

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  1. Institute of Marine Biology, Far East Division, Russian Academy of Sciences, Vladivostok, 690041, Russia

    N. I. Selin

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  1. N. I. Selin
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Selin, N.I. Vertical Distribution of the Far East Trepang Apostichopus japonicusin Vostok Bay, Sea of Japan. Russian Journal of Marine Biology 27, 256–258 (2001). https://doi.org/10.1023/A:1011971504890

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