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作者在辽宁宽甸调查卫氏并殖吸虫类型分布时曾发现在自然感染的犬肺中有二倍体型与三倍体型成虫混合寄生。但在一个虫囊内可否存在两型混合感染未曾调查。文献上仅见宫崎等(1981)以卫氏并殖吸虫两种不同类型的囊蚴同时喂犬,在人工感染的犬肺中发现过在单一虫囊中有异型共栖。作者等欲观察在自然感染的卫氏并殖吸虫犬肺的虫囊中可否有此两型的自然混合感染以及其频率如何?这
When investigating the distribution of Paragonimus westermani genotypes in Kuandian, Liaoning Province, it was found that there was a mixture of diploid and triploid adult parasites in naturally infected canine lungs. However, in a worm capsule there may be two types of mixed infections have not been investigated. The literature only see Miyazaki et al. (1981) Paragonimus westermani two different types of metacercaria while feeding dogs, in artificially infected canine lungs found in a single worm capsule in the alien symbiotic. To see if there is a natural mixture of these two types of natural mixed infections in the naturally infected Paragonimus canine lung and how often does this mean?