阿迪朗达克地区带状神秘蜗牛(Viviparus georgianus)的DNA条形码及寄生虫感染定量分析

Pub Date : 2017-11-14 DOI:10.4003/006.035.0211
A. David, Hanson Zhou, Ashley Lewis, Arianna Yhann, Susan Verra
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引用次数: 7

摘要

摘要:条纹神秘蜗牛Viviarus georgianus(Lea,1834)是美国东北部的一种入侵淡水软体动物,已成为纽约州北部许多湖泊和河流的主要动物群。尽管在20世纪90年代初对该地区的软体动物进行了一系列全面的分类学研究,但该物种从未在纽约得到基因证实。此外,它的入侵潜力从未接近臭名昭著的斑马和夸加贻贝。在这项研究中,我们报道了来自阿迪朗达克(纽约州北部)的一个新的格鲁吉亚V.georgianus种群,并首次使用贝叶斯分析对其身份进行了基因确认。基于实地观察,我们还调查了200只蜗牛的吸虫感染情况,并量化了2016年夏天(5月至8月)四个月内的流行率和强度。我们的研究结果发现,georgianus是棘口吸虫的中间宿主,其总患病率为66.7%(N=177)。我们在纽约蜗牛入侵状况的背景下讨论了这些结果的含义,并为未来对该物种的研究提供了框架。
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DNA Barcoding of the Banded Mystery Snail, Viviparus georgianus in the Adirondacks with Quantification of Parasitic Infection in the Species
Abstract: The banded mystery snail, Viviparus georgianus (Lea, 1834) is an invasive freshwater mollusc of the northeastern United States, where it has become the dominant fauna in many lakes and rivers of upstate New York (NY). Despite a series of comprehensive taxonomic studies carried out in the early 1990s on molluscs in the region, this species was never genetically confirmed in NY. In addition, its invasive potential had never approached that of the notorious zebra and quagga mussels. In this study, we report a new population of V. georgianus from the Adirondacks (northern NY) and genetically confirm its identity for the first time using Bayesian analysis. Based on field observations, we also investigated trematode infection in 200 snails and quantify their prevalence and intensity over four months in the summer of 2016 (May–August). Our results found that V. georgianus serves as the intermediate host of an echinostomatid trematode species with an overall prevalence of 66.7% (N=177). We discuss the implications of these results within the context of the snail's invasive status in NY and provide a framework for future research on the species.
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