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首页> 外文期刊>International Journal for Parasitology >The patterns of organisation and structure of interactions in a fish-parasite network of a neotropical river
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The patterns of organisation and structure of interactions in a fish-parasite network of a neotropical river

机译：新热带河流域鱼-寄生虫网络中相互作用的组织和结构模式

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The use of the complex network approach to study host-parasite interactions has helped to improve the understanding of the structure and dynamics of ecological communities. In this study, this network approach is applied to evaluate the patterns of organisation and structure of interactions in a fish-parasite network of a neotropical Atlantic Forest river. The network includes 20 fish species and 73 metazoan parasite species collected from the Guandu River, Rio de Janeiro State, Brazil. According to the usual measures in studies of networks, the organisation of the network was evaluated using measures of host susceptibility, parasite dependence, interaction asymmetry, species strength and complementary specialisation of each species as well as the network. The network structure was evaluated using connectance, nestedness and modularity measures. Host susceptibility typically presented low values, whereas parasite dependence was high. The asymmetry and species strength were correlated with host taxonomy but not with parasite taxonomy. Differences among parasite taxonomic groups in the complementary specialisation of each species on hosts were also observed. However, the complementary specialisation and species strength values were not correlated. The network had a high complementary specialisation, low connectance and nestedness, and high modularity, thus indicating variability in the roles of species in the network organisation and the expected presence of many specialist species. (C) 2015 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved.
机译：使用复杂的网络方法研究宿主与寄生虫的相互作用，有助于增进对生态群落结构和动态的理解。在这项研究中，这种网络方法被用于评估新热带大西洋森林河鱼寄生网络中相互作用的组织和结构模式。该网络包括从巴西里约热内卢州的关渡河采集的20种鱼类和73种后生寄生虫。根据网络研究中通常采用的措施，使用宿主易感性，寄生虫依赖性，相互作用不对称性，物种强度和每个物种以及网络的互补专业化程度来评估网络的组织。使用连接性，嵌套性和模块化度量来评估网络结构。寄主敏感性通常呈现低值，而寄生虫依赖性高。不对称性和物种强度与宿主分类法相关，而与寄生虫分类法无关。还观察到寄生生物分类组之间在宿主上每个物种的互补专业化方面的差异。但是，互补的专业化和物种强度值不相关。该网络具有很高的互补专长，较低的连通性和嵌套性以及较高的模块化性，因此表明了物种在网络组织中的作用存在可变性，并且预期存在许多专业物种。 （C）2015年澳大利亚寄生虫学协会。由Elsevier Ltd.出版。保留所有权利。

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