论文部分内容阅读
1993年7月—1994年6月,作者对食蚊鱼鳃上台湾棘带吸虫囊蚴内种群的变化进行了为期12个月的研究,结果表明:食蚊鱼种群数量和种群重量的月变化相似,但两者与水温没有相关性;食蚊鱼种群的体长结构呈季节性动态变化规律;食蚊鱼的感染与其自身的生长紧密相关,感染率、感染强度表现出了与体长相似的变化趋势;中间的两组鳃片寄生的囊蚴较多,不同鳃片组囊蚴平均密度的月变化规律一致,食蚊鱼任何两个鳃片组分布的台湾棘带吸虫囊蚴的平均数差异都显著(P<0.001);囊蚴在食蚊鱼鳃上的分布为聚集分布。
From July 1993 to June 1994, the author conducted a 12-month study on the population changes of gnat in the gills of mosquito gills on the gills of mosquitoes. The results showed that: the monthly variation of mosquito fish population and population weight But there was no correlation between them and the water temperature. The body length structure of mosquito fish showed a seasonal dynamic change. The infection of mosquito fish was closely related to its own growth, and the infection rate and infection intensity showed the similar body length . The metaplasia of metacercariae in the middle two gill sheets were more and the monthly variation of the average density of metacercariae in different gill pieces was the same. The mean (P <0.001). The distribution of metacercaria on the gills of mosquito fish was aggregated.