Combining data-driven methods and lab studies to analyse the ecology of Dikerogammarus villosus
Combining data-driven methods and lab studies to analyse the ecology of Dikerogammarus villosus
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DOI：
10.1016/j.ecoinf.2009.12.005
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发表时间：
2010-03-01
影响因子：
5.1
通讯作者：
Goethals, Peter L. M.
中科院分区：
文献类型：
--
作者：
Boets, Pieter;Lock, Koen;Goethals, Peter L. M.
水生入侵物种的扩散是一个世界性的问题，在水生环境中，特别是外来甲壳动物对生物多样性的影响尤为严重。端足类生物长绒毛双头龟（Dikerogammarus villosus）是弗兰德斯地区的一种外来物种，其扩散迅速，可能对水生生物群落造成严重影响。现场数据和建模技术，以调查该物种对其他大型无脊椎动物的潜在影响捕食者-猎物实验中使用的所有类型的猎物（普通的蚤状，Gaminarus tigrinus，Crangonyx pseudogracilis。水生锦葵、双翅目Cloeon dipterum和摇蚊属物种）被D villosus消耗，特别是那些移动的较少的物种，例如摇蚊属物种。砾石的存在为猎物提供庇护，从而在一定程度上减少了捕食。利用决策树建立生境适宜性模型，结果表明，绒毛杜父鱼主要栖息在人工河岸结构、高氧饱和度和低电导率的生境中，这与化学水质较好的沟渠相对应。此外，基于大型底栖动物群落中存在的类群丰度的群落生态学分类树表明，D villosus的存在对土著G pulex的存在产生了负面影响。结合实验室实验和野外观察，可以得出结论，D villosus可以严重影响弗兰德斯的大型底栖动物群落（C）2009 Elsevier B V保留所有权利
The spread of aquatic invasive species is a worldwide problem In the aquatic environment, especially exotic Crustacea are affecting biodiversity The amphipod Dikerogammarus villosus is such an exotic species in Flanders, which is rapidly spreading and probably has a serious impact on aquatic communities The purpose of the present study was to make use of lab results, field data and modelling techniques to investigate the potential impact of this species on other macroinvertebrates All types of prey that were used in predator-prey experiments (Common's pulex, Gaminarus tigrinus, Crangonyx pseudogracilis. Asellus aquaticus, Cloeon dipterum and Chironomus species) were consumed by D villosus, especially species that were less mobile such as the Chironomus species The presence of gravel somewhat reduced predation by providing shelter to the prey. Substrate preference experiments indicated that D villosus preferred a stony substrate Using decisions trees to construct habitat suitability models based on field observations, it could be concluded that D villosus is mainly found in habitats with an artificial bank structure, a high oxygen saturation and a low conductivity, which corresponds with canals with a good chemical water quality. Moreover, a synecological classification tree, based on the abundance of the taxa present in the macroinvertebrate communities, indicated that the presence of D villosus negatively affected the presence of the Indigenous G pulex When the laboratory experiments and the field observations are combined, it can be concluded that D villosus can seriously affect macroinvertebrate communities in Flanders (C) 2009 Elsevier B V All rights reserved