An investigation into the morphological and behavioral adaptations of the aquatic larvae of Aquatica leii (Coleoptera: Lampyridae) to prey upon freshwater snails that serve as intermediate hosts for the liver fluke
An investigation into the morphological and behavioral adaptations of the aquatic larvae of Aquatica leii (Coleoptera: Lampyridae) to prey upon freshwater snails that serve as intermediate hosts for the liver fluke
复制标题
对 Aquatica leii（鞘翅目：萤科）水生幼虫捕食作为肝吸虫中间宿主的淡水蜗牛的形态和行为适应的调查
DOI：
10.1016/j.biocontrol.2011.12.007
复制
发表时间：
2012-09-01
影响因子：
4.2
通讯作者：
Meyer-Rochow, V. Benno
中科院分区：
文献类型：
--
作者：
Fu, Xinhua;Meyer-Rochow, V. Benno
淡水腹足类Stagnaea stagnalis和Hippeutis sp.是对人类和动物有害的寄生虫的中间宿主。为了评估雷氏萤火虫Aquatica leii Fu and Ballantyne（2006）的水生幼虫对这些淡水螺的捕食能力，我们对这些幼虫的形态适应进行了观察，使它们能够攻击和吞噬螺，并进行了一系列基于实验室的捕食实验，其目的是确定每日捕食率，对小型和大型蜗牛的不同捕食，对三种不同蜗牛的选择性捕食，以及总体饮食需求。对幼虫外部形态的观察显示，发育良好的臀足和专门的口器攻击和压倒水螺。以淡水螺为食，幼虫通常形成许多个体的聚集。虽然幼虫的食物范围很广，也可以吃死蜗牛和其他动物，但食物选择测试表明，幼虫A。leii更喜欢live L. stagnalis Linnaeaus，1756对其他两种水生螺类，包括纯化环棱螺Bellamya puriificata Heude，1890和Hippeutis sp. LEII可能是与淡水蜗牛种群有关的潜在合适的生物控制剂。(C)2012 Elsevier Inc. All rights reserved.
The freshwater gastropods Lymnaea stagnalis and Hippeutis sp. are intermediate hosts of parasites that are harmful to humans and animals. In order to evaluate the predatory capacity of the aquatic larvae of the firefly Aquatica leii Fu and Ballantyne (2006) on these freshwater snails, we carried out observations on morphological adaptations of these larvae that enable them to attack and devour the snails and we conducted a series of laboratory-based predation experiments, whose aims were to determine daily predation rate, differential predation on small and large sized snails, selective predation on three different species of snail, and overall dietary requirements. Observations on the external morphologies of the larvae revealed well-developed pygypodia and specialized mouthparts to attack and overpower water snails. Feeding communally on freshwater snails, larvae commonly form aggregations of many individuals. Although the larvae have a wide dietary spectrum and can also feed on dead snails and other animals, food choice tests showed that larval A. leii prefer live L. stagnalis Linnaeaus, 1756 to all other foods tested, including the two other aquatic snails Bellamya purificata Heude, 1890 and Hippeutis sp. Our observations suggest that larval A. leii could be potentially suitable bio-control agents in connection with freshwater snail populations. (C) 2012 Elsevier Inc. All rights reserved.