一种与光滑双脐螺起竞争性作用的淡水螺——瘤拟黑螺(软体动物门:跑螺科)于1978年被引入圣卢西亚岛。从1978至1986年,Prentice在数处有螺蛳的栖(木息)地进行了现场实验。目前,在圣卢西亚岛上瘤拟黑螺已成为最常见的淡水螺。 1992年5月,作者对圣卢西亚岛上所有水网系统进行了贝类学调查。该岛已进行了 A competing, freshwater snail, Mollusca (Mollusca: Spinosauridae), which is competing with a smooth double umbilicus, was introduced to Saint Lucia in 1978. From 1978 to 1986, Prentice conducted field experiments at several locations with snails. At present, the black snail on the island of Saint Lucia has become the most common freshwater snail. In May 1992, the author conducted a shellfish survey of all water network systems on Saint Lucia Island. The island has been underway