An investigation of the prevalence of Giardia agilis in anuran amphibians from fourteen areas in China.,International Journal for Parasitology: Parasites and Wildlife

当前位置： X-MOL 学术 › Int. J. Parasitol. Parasites Wildl. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

An investigation of the prevalence of Giardia agilis in anuran amphibians from fourteen areas in China.
International Journal for Parasitology: Parasites and Wildlife ( IF 1.8 ) Pub Date : 2020-04-28 , DOI: 10.1016/j.ijppaw.2020.04.009
Zhangxia Lyu _{1,

2} , Jiaoni Cheng ₁ , Jingru Shao ₁ , Qingqing Ye ₁ , Huixian Bai ₁ , Jianfan Wen ₁

Affiliation

Giardia agilis is a Giardia species which is morphological distinguishable for its very narrow and elongated trophozoite. Although there were a few studies about its morphology since its first report in 1882, none investigations about its prevalence have ever been reported to date. We investigated the prevalence of G. agilis in 25 anuran amphibian species from five provinces of China using both morphological and molecular methods. Of the 463 tested samples, 195 (42.1%) were positive. The 195 positive samples were from nine species, which are scatteredly distributed in four anuran amphibian families. The statistical prevalence among adults of different frog species showed no significant difference, and so did among tadpoles. Thus, G. agilis is probably able to infect all anuran amphibians without species-bias. More interestingly, the prevalence in the tadpoles is significantly higher than in their adults. The prevalence in Kaloula verrucosa tadpoles from the same area showed no significant differences between none-legged stage and two-legged stage, but the prevalence in these two developmental stages is significantly higher than in the four-legged stage. And the prevalence in four-legged stage is still much higher than in adults. A turning point of prevalence appeared in the period of tadpole tail degeneration. Moreover, all the positive samples were from the areas with relatively high altitude (more than 870 m). The fact that G. agilis tends to easily infect the frogs living in high altitude areas indicated it has evolved the ability to adapted the dramatic temperature change in poikilothermal animals. Therefore, G. agilis has evolved some special successful parasitism strategies for parasitizing the poikilothermal hosts with metamorphosis such as anuran amphibians.

更新日期：2020-04-28

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文

全部期刊列表>>