Population structure of antarctic krill (Euphausia superba Dana) in the waters north and west of Antarctic Peninsula |
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| Authors: | Wang Rong Chen Shihua |
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| Institution: | (1) Institute of Oceanology, Academia Sinica, Qingdao;(2) Second Institute of Oceanography, SOA, Qingdao |
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| Abstract: | Antarctic krill (Euphasia superba Dana) is a key organism of the Antarctic marine ecosystem and a potential fishery resoure. Its ecology was the major biological
project in the First Chinese Antarctic Expedition (1985). Acoustic observations and IKMT tows were madecin waters north and
west of Antarctic Peninsula. Environmental factors were also observed. Analyses of the population structure, i.e. the sex
percentage distribution and other data obtained show that among the 3,640 individuals of determinable sex, only 38.1% were
males and that the larger the body length the smaller the percentage of males, for example, male percentage dropped to 8.3%
for size group >55 mm. The population's relations to environmental factors are also discussed.
Contribution No. 1711 from the Institute of Oceanology, Academia Sinica. |
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