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首页> 外文期刊>River research and applications >SPATIAL AND TEMPORAL RELATIONSHIPS BETWEEN THE INVASIVE SNAIL BITHYNIA TENTACULATA AND SUBMERSED AQUATIC VEGETATION IN POOL 8 OF THE UPPER MISSISSIPPI RIVER
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SPATIAL AND TEMPORAL RELATIONSHIPS BETWEEN THE INVASIVE SNAIL BITHYNIA TENTACULATA AND SUBMERSED AQUATIC VEGETATION IN POOL 8 OF THE UPPER MISSISSIPPI RIVER

机译：密西西比河上游8号池中侵入性钉螺伯尼奇虫和淹没的水生植物之间的时空关系

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摘要

Bithynia tentaculata is an invasive snail that was first reported in Lake Michigan in 1871 and has since spread throughout a number of freshwater systems of the USA. This invasion has been extremely problematic in the Upper Mississippi River as the snails serve as intermediate hosts for several trematode parasites that have been associated with waterfowl mortality in the region. This study was designed to assess the abundance and distribution of B. tentaculata relative to submersed aquatic vegetation as macrophytes provide important nesting and food resources for migrating waterfowl. Temporal changes in both vegetation and snail densities were compared between 2007 and 2015. Between these years, B. tentaculata densities have nearly quadrupled despite minor changes in vegetation abundance, distribution and composition. Understanding the spatial distribution of B. tentaculata in relation to other habitat features, including submersed vegetation, and quantifying any further changes in the abundance and distribution of B. tentaculata over time will be important for better identifying areas of risk for disease transmission to waterfowl. Copyright (C) 2017 John Wiley & Sons, Ltd.
机译：Bithynia tentaculata是一种侵入性蜗牛，最早于1871年在密歇根湖报道，并已传播到美国的许多淡水系统中。这种蜗牛在密西西比河上游一直是一个极为棘手的问题，因为蜗牛充当了与该地区水禽死亡率相关的几种吸虫的中间寄主。这项研究旨在评估水生植物相对于淹没水生植物的丰富度和分布，因为大型植物为水禽的迁移提供了重要的筑巢和食物资源。比较了2007年至2015年植被和蜗牛密度的时间变化。在这些年之间，尽管植被丰度，分布和组成发生了微小变化，但B. tentaculata密度却几乎翻了两番。了解与其他栖息地特征（包括淹没的植被）有关的B. tentaculata的空间分布，并量化随时间推移B. tentaculata的丰度和分布的任何进一步变化，对于更好地确定疾病传播给水禽的风险区域非常重要。版权所有（C）2017 John Wiley＆Sons，Ltd.

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