长江黄州段幼鲤体内寄主蠕虫的调查及鱼类资源的合理利用

Investigation of Endobiotic Helminths of Larval Carps in Huangzhou Stretch of the Long River and Proper Utilization of Fish Resource

１９９９年１１月上旬，对长江黄州江段的鲤鱼进行了相对渔获量、种群结构和体内寄生蠕虫的调查。统计结果表明，鲤鱼只占总渔获量的７％，且９４％为当年的小幼体。鲤鱼的鳃上及消化道内只有三种蠕虫寄生。宿主感染这三种寄生蠕虫的感染率和感染强度均很小。据此提出保护、合理利用这一鱼类资源的几点建议。

An investigation is made in early November, 1999, on the catching, population structure and endobiotic helminthism of carps in Huangzhou stretch of the Long River. Statistical result shows that carps take only 7% of the total catching, and 94 % of them are larvae. Three kinds of helminthism are found in the digestive tract of suprabranchial chamber of carps. The infestation percentage and the infectiosity of host infestation are small. On the basis of this investigation, suggestions are made on the conservation and proper utilization of the carp resource.