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首页> 外文期刊>Parasitology >Incorporating parasite systematics in comparative analyses of variation in spleen mass and testes sizes of rodents.
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Incorporating parasite systematics in comparative analyses of variation in spleen mass and testes sizes of rodents.

机译：将寄生虫系统学纳入啮齿动物脾脏质量和睾丸大小变化的比较分析中。

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SUMMARYParasite diversity is hypothesized to act on host life-history traits through investment in immunity. In order to incorporate the diversity of the parasite community that an individual host or a host species may face, two indices can be used: Taxonomic Species Richness and Taxonomic Entropy, where the taxonomic information is incorporated with the taxonomic weight. We tested whether these indices correlate with several morphological traits potentially implicated in immune defence and in reproduction, using data on gastrointestinal helminths and their rodent hosts sampled in Southeast Asia. We found no relationship between parasite diversity indices and either spleen mass or testes size at the intraspecific level, i.e. at the level of individuals. At the interspecific level, we found no relationship between the parasite diversity indices and testes size. However, we found that female spleen mass is significantly influenced by the specific species richness of parasites, whereas male spleen mass is influenced by individual mean parasite diversity indices. We concluded that female spleen mass may have evolved in response to gastrointestinal helminth pressure acting at species levels, while in males, the individual spleen mass could be constrained by other factors, such as the blood storage function of the spleen.
机译：总结寄生虫的多样性被认为可以通过投资免疫来对宿主的生活史特征起作用。为了整合单个寄主或寄主物种可能面临的寄生虫群落的多样性，可以使用两个指数：分类学物种丰富度和分类学熵，其中将分类学信息与分类学权重结合在一起。我们使用在东南亚采样的胃肠蠕虫及其啮齿动物宿主的数据，测试了这些指数是否与可能与免疫防御和生殖有关的几种形态特征相关。我们发现寄生虫多样性指数与种内水平（即个体水平）的脾脏质量或睾丸大小之间没有关系。在种间水平，我们发现寄生虫多样性指数和睾丸大小之间没有关系。然而，我们发现雌性脾脏质量受寄生虫特定物种丰富度的显着影响，而雄性脾脏质量则受个体平均寄生虫多样性指数的影响。我们得出的结论是，雌性脾脏质量可能是响应于物种水平上的胃肠蠕虫压力而进化的，而在雄性中，单个脾脏质量可能受到其他因素的限制，例如脾脏的储血功能。

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