Everson, I.; Kock, K.-H.; Parkes, G.. 1997 Interannual variation in condition of the mackerel icefish. Journal of Fish Biology, 51 (1). 146-154. 10.1111/j.1095-8649.1997.tb02520.x
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.
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