南极鳕鱼食性的初步研究

对 1 98 8年 1 2月 2 5 - 2 6日在长城站附近海区采集的南极鳕鱼胃含物进行了初步分析。结果表明食物的主要种类有底栖动物 6种和钩虾多种 ,浮游动物 3种 ,海藻 8种。底栖动物占食物量的 5 2 .82 % ,其中帽贝占 1 0 .77% ,钩虾类占 3 3 .78% ;浮游动物占 6 .74% ,其中磷虾占 5 .47% ;海藻占 3 5 .49% ,其中紫菜占 6 .3 5 % ,倒卵银杏藻占 1 8.96 %。鱼的体重与体长相关显著 ,相关系数是 0 .96。分析结果反映了南极鳕鱼的食物来源主要是底栖动物和海藻

A PRELIMINARY STUDY ON THE FOOD HABIT OF NOTOTHENIA CORIICEPS OF ANTARCTICA

A preliminary analysis of the stomach contents of Notothenia coriiceps Richardson collected in the adjacent waters of the Great Wall Bay was made during the period from 25th to 26th, December 1988. The results of the analysis showed that the main kinds of food included 6 species of benthic animals, many species of Amphipoda, 3 species of zooplankton and 8 species of benthic algae. The benthic animals occupied 52.82% of the total weight of food ingested, of which Patinigers polanis amounting to 16.77%, Amphipoda 33.78%; the Zooplankton accounting for 6.74%,of which, the Euphausia superba accounting for 5.47%; the benthic algae 35.49%, of which Porphyra audiviifolium accounting for 6.35% and Iridaea obovata 18.69%. There was an obvious correlation between the body weight and length of the fish, the correlation coefficient being 9.6. The analytical results also revealed that the main source of the food of Notothenia coriiceps was benthic animals and benthic algae.