Imani-Baran Abbas, Yakhchali Mohammad, Malekzadeh-Viayeh Reza, Farahnak Ali
Dept. of Pathobiology, Parasitology Division, Faculty of Veterinary Medicine, Tabriz University, Tabriz, Iran.
Dept. of Pathobiology, Parasitology Division, Faculty of Veterinary Medicine, Nazlu campus, Urmia University, Urmia, Iran.
Iran J Parasitol. 2013 Jul;8(3):423-9.
Trematodes are a diverse group of endoparasites which require molluscan and vertebrate animals as intermediate and definitive hosts in their life cycle. The present study was carried out to determine the diversity and geographic distribution of infection with trematodes'cercariae in the snail Lymnaea gedrosiana from north-west Iran.
A total number of 6759 Lymnaeidae snails were collected from 28 snail habitats; of these L. gedrosiana was the prevalent snail (74.37%) which examined for cercarial infection by shedding method.
The overall infection rate was 8.03%. The most frequent trematodes cercariae in the snail were xiphidiocercariae (81.98%), furcocercariae (32.26%), echinostome cercariae (5.19%), and monostome cercariae (1.24%). The highest infection rate in L. gedrosiana (100%) was with echinostome cercariae from Golestaneh in autumn.
Due to the important role of pond snails in transmission of cercariae to fish as a source of zoonotic diseases, it is essential to estimate the distribution and abundance of the snails and the rate of their infection with different trematodes' cercariae, and establish control programs in each region.
吸虫是一类多样的体内寄生虫，在其生命周期中需要软体动物和脊椎动物作为中间宿主和终末宿主。本研究旨在确定伊朗西北部格德罗西亚椎实螺体内吸虫尾蚴感染的多样性和地理分布。
从28个蜗牛栖息地共收集6759只椎实螺科蜗牛；其中格德罗西亚椎实螺是优势蜗牛（占74.37%），通过逸出法检测其尾蚴感染情况。
总体感染率为8.03%。蜗牛体内最常见的吸虫尾蚴是剑尾蚴（81.98%）、叉尾蚴（32.26%）、棘口吸虫尾蚴（5.19%）和单口尾蚴（1.24%）。秋季来自戈勒斯坦内的棘口吸虫尾蚴使格德罗西亚椎实螺的感染率最高（达100%）。
由于池塘蜗牛在将尾蚴传播给鱼类作为人畜共患病源方面的重要作用，估计蜗牛的分布和数量以及它们感染不同吸虫尾蚴的比率，并在每个地区制定控制计划至关重要。
