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首次报道长江中游寄生于翘嘴鱼白鳃上的江西拟双身虫。江西拟双身虫的感染率为 36 7% ,平均感染强度为 1 5 5 ,丰盛度为 0 5 7,在长度小于 17 5cm的宿主中的感染率是随着宿主长度的增大而增大 ,之后 ,则明显下降 ,在 2 0 5cm以上的翘嘴鱼白中未检出江西拟双身虫 ,寄生虫在宿主种群中为聚集分布。76 5 %的双身虫是附着在翘嘴鱼白的第一、二片鳃上 ,其生态位宽度与感染率之间存在高度正相关关系 ,相关系数r =0 .84 5 6。
For the first time reported in the middle reaches of the Yangtze River parasites in the mouth of the white-billed albite Jiangxi twins. In Jiangxi, the infection rate was 36.7%, the average infection intensity was 155, the abundance was 0 57, and the infection rate in hosts less than 175 cm in length increased with the increase of host length , And then decreased significantly. In Jiangxi Cichlid White, the number of parasites was not detected in the trophozoites, and the parasites were aggregated in the host population. 76% of the worms were attached to the first and second gill of Cichlafish, and there was a highly positive correlation between the niche breadth and infection rate. The correlation coefficient r = 0.8465.