[目的]对额尔齐斯河(中国段)银鲫(Carassius auratus gibelio Bloch)寄生虫种类及感染情况进行调查研究.[方法]采用鱼类寄生虫学调查方法.[结果]共剖检银鲫175尾,发现寄生虫9种,分别为坏鳃指环虫(Dactylogyrus vastator)、旋形指环虫(Dactylogyrus falciformis)、伸展指环虫(Dactylogyrus extensus)、复口吸虫幼虫(Diplostomum larva sp)、复殖吸虫幼虫(Trematoda larva sp)、绦虫幼虫(Cestodearvasp)、对盲囊线虫幼虫(Contracaecum Railliet larva sp)、泡吻棘头虫(Pomphorhynchus laevissp)、短指三指鳋(Paraergasilus brividigitus),隶属于4门、6纲、7目、7科、7属.[结论]根据S2/X的判别原则,9种寄生虫在银鲫种群中的分布均为聚集分布；复口吸虫、泡吻棘头虫、对盲囊线虫的感染率大于10％,为该区系的核心种；复口吸虫为优势种.%[ Objective and Method ] The species composition and infection condition on parasites of Carassius auratus gibelio Bloch in Ergis River (China) were investigated by the ascertainment methods of fishes parasites. By the routine methods offish parasites research, we autopsied 175 Carassius auratus gibelio Bloch. [Result] The result showed that 9 species of parasites were: Dactylogyrus vastator, Dactylogyrus falciformis, Dactylogyrus extensus, Diplostomum larva sp, Trematoda larva sp, Cestode larva sp, Contracaecum Railliet larva sp, Pomphorhynchus laevis sp Paraergasilus brividigitus. They belong to 4 genera, 6 families, 7 orders, 7 classes, 7 phyla. [ Conclusion ] 9 species of parasites were fit to aggregated distribution in the host population according to SVX. Diplostomum larva sp, Pomphorhynchus laevis sp, Contracaecum Railliet larva sp infection rates were greater than 10% , and they are the core species in the parasite community of Carassius auratus gibelio. Diplostomum sp is the dominant species in the parasite community of Carassius auratus gibelio.
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