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作者对温州海区常见 3 0多种经济鱼类作为中间宿主感染寄生虫的情况进行了调查 ,结果表明15 .2 %的被检鱼类寄生单殖吸虫 ,而 63 .6%的被检鱼类有线虫寄生 .文中着重对不同体长组长蛇鲻体内寄生线虫的状况进行研究 ,随着宿主体长的增长 ,其感染强度和平均密度有逐渐增加的趋势 .宿主体内寄生率及密度占绝对优势的isakissimplex幼虫和Contracaecumsp .幼虫在宿主体内的频率分布 ,表明多数宿主不感染或只感染少量的线虫幼虫 ,少数宿主感染线虫幼虫数量较大 ;线虫幼虫在宿主种群中的分布格局类型均为聚集分布 .
The authors investigated the prevalence of parasites infecting 30 common economic fishes in Wenzhou sea area as intermediate hosts. The results showed that 15.2% of the fish were parasitic Monascus parasites and 63.6% of the fish were seized There is a nematode parasitism.In this paper, the study on the status of parasitic nematodes in snake galls of different length groups was conducted, and the infection intensity and average density increased gradually with the increase of host length.The host parasitism rate and density were absolute The frequency distribution of predominant larvae of Isakissimplex and Contracaecumsp larvae in the host showed that most of the hosts did not infect or infected only a few nematode larvae and the majority of larvae infected with the host larvae were larger. The distribution patterns of nematode larvae in the host population were all aggregated Distribution.