Resistance to desiccation in aquatic invasive snails and implications for their overland dispersal
Resistance to desiccation in aquatic invasive snails and implications for their overland dispersal
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DOI：
10.1007/s10750-014-1839-z
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发表时间：
2014-12-01
期刊：
影响因子：
2.6
通讯作者：
Gemberling, Adrienne R.
中科院分区：
文献类型：
--
作者：
Havel, John E.;Bruckerhoff, Lindsey A.;Gemberling, Adrienne R.
至少有30种非本地淡水蜗牛入侵了北美。这些蜗牛入侵新湖泊的风险取决于它们在陆路运输中的生存能力。我们首先回顾了已发表的使用淡水蜗牛的实验室实验，这些实验表明许多物种能够忍受数天的空气暴露。然后，我们测试了在威斯康星州广泛分布的三种入侵水生蜗牛：Bithynia tentaculata， Cipangopaludina chinensis和Viviparus georgianus对干燥的耐受性。在一系列的七个实验中，我们通过将蜗牛单独放置在网袋中，挂在户外，并限制在屏幕帐篷中来模拟船只运输。屏蔽屋顶允许暴露在阳光和雨水中，现场气象站记录温度、降水和湿度。3种昆虫均表现出较高的存活率，在大多数实验结束时均有部分个体存活，其中触手白鲟和格鲁吉亚白鲟存活42天，中国白鲟存活63天。暴露54 d后放生。总的来说，我们的研究结果表明，这些入侵蜗牛应该很容易在陆地上长时间的运输中存活下来，这表明需要对进入湖泊的休闲划船者保持警惕。
At least 30 species of nonindigenous freshwater snails have invaded North America. The risk of these snails invading new lakes depends upon their ability to survive overland transport. We first reviewed published laboratory experiments using freshwater snails, which show numerous species are able to tolerate days of air exposure. We then tested tolerance to drying of three species of invasive aquatic snails that are widespread in Wisconsin: Bithynia tentaculata, Cipangopaludina chinensis, and Viviparus georgianus. In a series of seven experiments, we simulated boater transport by placing snails individually in mesh bags, hung outdoors, and confined in a screen tent. The screen roof allowed exposure to both sun and rain, and an on-site weather station recorded temperature, precipitation, and humidity. All three species exhibited high survivorship, with some individuals alive at the end of most experiments: 42 days for B. tentaculata and V. georgianus and 63 days for C. chinensis. Viable young were released by C. chinensis after 54 days of exposure. Overall, our results indicate that these invasive snails should readily survive long periods of transport overland, indicating a need for continued vigilance of recreational boaters entering lakes.