感染舌隐穴吸虫(Cryptocotyle lingua)的欧洲玉黍螺分布和物种多度

The Distribution and Abundance of Littorina littorea Infected with Cryptocotyle lingua

摘要: 背景：舌隐穴吸虫(Cryptocotyle lingua)是一种小型蠕虫。然而，在性成熟之前，海螺是蠕虫的第一个中间宿主。目的：本实验对其第一中间寄主欧洲玉黍螺(Littorina littorea)的分布和物种多度(Abundance)进行了研究。方法：观察从海滩带回来的欧洲玉黍螺的消化腺，在显微镜下观察欧洲玉黍螺是否感染了C. lingua，记录感染螺数并进行R分析。结果：欧洲玉黍螺的生境条件对其遭受感染的可能性有影响，确定了欧洲玉黍螺中C. lingual的分布和物种多度。结论：Ballochmartin海滩比White Bay海滩的欧洲玉黍螺更容易受到感染，靠近大海的欧洲玉黍螺被感染的可能性越低，并且螺体的大小对感染的可能性有积极的影响。

Abstract: Background: Cryptotype lingua is a small worm. Before sexual maturity, however, conch was the first intermediate host of worms. Objective: To study the distribution and abundance of Littorina litorea, which is the first intermediate host of Crypocotyle lingua. Method: Observe the digestive gland of the snails which were brought back from the beach to determine under microscope if the snail is infected by C. lingua, count the number of infected L. littorea, and do the R analysis. Result: It can get insight on whether the habitat conditions of the marine snails affect the infection of L. littorea; the distribution and abundance of C. lingua in their first intermediate host, L. littorea, were investigated. Conclusion: The beach of Ballochmartin is more susceptible to infection on White Bay beaches; the beaches closer to the sea are less susceptible to infection; the likelihood of infection is positively affected by the size of L. littorea.