次睾吸虫在家鸭宿主种群中的空间分布格局研究

STUDY ON SPATIAL DISTRIBUTION PATTERNS OF METORCHIS TREMATODA IN THEIR HOST POPULATION OF DOMESTIC DUCKS

对在５３６６只鸭胆囊中检获的东方次睾吸虫和台湾次睾吸虫进行的统计生态学分析表明：台湾次睾吸虫的总感染率、强度和密度均高于东方次睾吸虫（Ｐ＜０．０１）。台湾次睾吸虫是家鸭次睾吸虫中的优势种。两种吸虫的分布型经两种方法计算和拟合，符合聚集分布中的负二项分布。两种次睾吸虫亲和性极小，而呈显著负关联（Ｐ＜０．０１）。相关分析表明在混合感染时，两种吸虫感染强度间的相互关系在多数范围内呈显著负相关（Ｐ＜０．０５）。

Statistics ecological analysis of Metorchis orientalis and M.taiwanensis from 5366 gall bladders of domestic ducks demomstrated that prevelance,intensity and abundance of M.taiwanensis was significant higher than thoes of M.orientalis (P<0 01).The dominant species of helminths was M.taiwanensis. The distribution patterns of the helminths were fitted by using two methods and the results showed the patterns were all negative bionomial distribution.There was a small affinity and significant negative accosiation between the trematodes (P<0 01).There were negative correlationship in most ranges between the intensities of the trematodes overlaped infection (P<0 05)