Wang Xuan, Ruan Leiying, Song Qingkai, Wang Wenguang, Tong Pinfen, Kuang Dexuan, Lu Caixia, Li Na, Han Yuanyuan, Dai Jiejie, Sun Xiaomei
Center of Tree Shrew Germplasm Resources, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College. Kunming, 650118, PR China.
Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, 650118, PR China.
Int J Parasitol Parasites Wildl. 2021 Jan 20;14:84-90. doi: 10.1016/j.ijppaw.2021.01.005. eCollection 2021 Apr.
belongs to the Asian and is transmitted by freshwater snails of the genus . Rodents are known definitive hosts of . In 2016, suspected schistosome eggs were found in the feces of the northern tree shrew () in a field in Lufeng County (latitude, 25°04'50″ N; longitude, 102°19'30″ E; altitude 1820 m), Yunnan Province, China. Morphological analysis suggested that the schistosome was 18S, 12S and CO1 genes sequencing and phylogenetic analysis showed that this species had the highest similarity to and occupied the same evolutionary branch as from Mianzhu, Sichuan, China. Meanwhile, based on 16S and 28S rDNA sequencing and morphological identification, the snail intermediate host was identified as a species of , and was found in irrigation channels. Phylogeny indicated that sp. LF was a sister taxon to . The was able to experimentally infect the captive-bred and eggs were recovered from all exposed. In this study, we report the infection of and sp. LF with in Lufeng, Yunnan, southwest China. These findings may improve our understanding of the host range, evolution, distribution, and phylogenetic position of .
属于亚洲种，由 属淡水螺传播。啮齿动物是已知的 终末宿主。2016年，在中国云南省禄丰县（北纬25°04'50″；东经102°19'30″；海拔1820米）的一块田地中，在北方树鼩（）的粪便中发现了疑似血吸虫卵。形态学分析表明该血吸虫为 ，18S、12S和CO1基因测序及系统发育分析显示，该物种与来自中国四川绵竹的 相似度最高，且占据相同的进化分支。同时，基于16S和28S rDNA测序及形态学鉴定，确定中间宿主螺为 属的一个物种，在灌溉渠道中被发现。系统发育表明 种LF是 的姐妹分类单元。该 能够实验性感染圈养繁殖的 ，且从所有暴露的 中均回收了虫卵。在本研究中，我们报告了中国西南部云南省禄丰县 及 种LF感染 的情况。这些发现可能会增进我们对 的宿主范围、进化、分布及系统发育位置的理解。
