Poonlaphdecha Srisupaph, Ribas Alexis, Martínez-Silvestre Albert, Villa Mercedes
Parasitology Section, Department of Biology, Healthcare and Environment, Faculty of Pharmacy and Food Science, University of Barcelona, 08028 Barcelona, Spain.
Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, 08028 Barcelona, Spain.
Animals (Basel). 2024 Apr 10;14(8):1154. doi: 10.3390/ani14081154.
(1) Background: , an esophageal parasite that primarily affects water snakes of the genus , has a known life cycle that involves snail and amphibian hosts. However, the biological aspects, chaetotaxic patterns, and pathogeny of this parasite in its hosts have not been fully elucidated. (2) Methods: Snails () were collected in Spain and examined for cercaria emergence. The larvae were used to experimentally infect , and metacercariae were isolated. Their chaetotaxy was studied using microscopy and scanning electron microscopy. The eye histology was also examined. (3) Results: The cercariae displayed distinctive morphological characteristics. The results of this study revealed three types of ciliated sensory papillae on the cercarial teguments, suggesting an adaptation for host detection and orientation. The metacercariae isolated from subcutaneous tissues showed oval bodies covered in spines. The chaetotaxy patterns matched those of Leptophallinae species. This is the first report of the presence of in the snail . Additionally, this study detected metacercariae in the eyes of , emphasizing the need for further research on trematode infections in amphibian eyes. (4) Conclusions: Members of the genus can serve as secondary intermediate hosts for , and the presence of metacercariae in amphibian eyes may have implications for the survival and habitat management of these amphibians. Understanding this parasite's prevalence, transmission dynamics, and impacts on host populations is crucial for conservation strategies.
(1) 背景：[寄生虫名称]是一种主要感染[水蛇属名称]水蛇的食管寄生虫，其已知生命周期涉及蜗牛和两栖动物宿主。然而，这种寄生虫在其宿主中的生物学特性、刚毛序式模式和致病性尚未完全阐明。(2) 方法：在西班牙采集蜗牛（[蜗牛名称]）并检查尾蚴逸出情况。将幼虫用于实验性感染[水蛇名称]，并分离出囊蚴。使用显微镜和扫描电子显微镜研究其刚毛序式。还检查了眼部组织学。(3) 结果：尾蚴表现出独特的形态特征。本研究结果揭示了尾蚴体表上有三种类型的纤毛感觉乳头，表明其适应于宿主检测和定向。从皮下组织分离出的囊蚴显示出覆盖有刺的椭圆形体。刚毛序式模式与细睾科物种的模式相符。这是首次报道在[蜗牛名称]蜗牛中存在[寄生虫名称]。此外，本研究在[水蛇名称]的眼睛中检测到囊蚴，强调需要对两栖动物眼睛中的吸虫感染进行进一步研究。(4) 结论：[水蛇属名称]的成员可作为[寄生虫名称]的第二中间宿主，两栖动物眼睛中囊蚴的存在可能对这些两栖动物 的生存和栖息地管理有影响。了解这种寄生虫的流行情况、传播动态及其对宿主种群的影响对于保护策略至关重要。
