麦氏冰鱼状况的年际变化。

Interannual variation in condition of the mackerel icefish.

作者信息

Everson I, Kock K, Parkes G

机构信息

British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge, CB3 0ET, U.K.

出版信息

J Fish Biol. 1997 Jul;51(1):146-54. doi: 10.1111/j.1095-8649.1997.tb02520.x.

DOI:10.1111/j.1095-8649.1997.tb02520.x

PMID:9236095

Abstract

Mackerel icefish Champsocephalus gunnari are widespread on the South Georgia (54° S, 36° W) shelf. Analysis of condition indicated a strong interannual variation. High condition indices, indicative of good feeding conditions, were present when krill were abundant in the region. Years when krill were scarce and condition index was consequently low, were consistent with years when indices from land-based krill predators also indicated that krill were scarce.

摘要

南极小鳞犬牙南极鱼广泛分布于南乔治亚岛（南纬54°，西经36°）的大陆架。对其身体状况的分析表明存在强烈的年际变化。当该区域磷虾数量丰富时，身体状况指数较高，这表明摄食条件良好。在磷虾稀缺且身体状况指数相应较低的年份，与陆基磷虾捕食者的指数显示磷虾稀缺的年份一致。