Contrasting diversity dynamics of phoretic mites and beetles associated with vertebrate carrion
Contrasting diversity dynamics of phoretic mites and beetles associated with vertebrate carrion
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DOI：
10.1007/s10493-013-9758-7
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发表时间：
2014-05-01
影响因子：
2.2
通讯作者：
Manning, Adrian D.
中科院分区：
文献类型：
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作者：
Barton, Philip S.;Weaver, Haylee J.;Manning, Adrian D.
腐肉是一种短暂的、营养丰富的资源，在分解时会吸引各种各样的节肢动物。腐尸相关的螨类经常通过吸光技术在动物身体之间传播，即一种动物通过另一种动物进行传播。然而，很少有研究将螨类组合的动态与腐肉中存在的其他昆虫分类群进行对比。我们检查并比较了在6个月的时间里，在一片长满草的桉树林地的四个不同时间，从袋鼠身体上采集的螨类和甲虫群落的丰富度、物种丰富度和组成的变化。我们发现，大多数螨类都是磷的，其中中鞭类属Uroseius(Uropodidae)、Macrocheles(Macrochelidae)和Parastes(Parasitidae)是最丰富的分类群(不包括astigmade)。螨类和甲虫的丰富度和丰富度格局有很大不同，其中螨类在6周和12周达到高峰，甲虫在1周和6周达到高峰。通过物种存在和相对丰度的变化，两者都表现出明显的演替格局。我们的研究表明，与甲虫组合相比，中节肢动物螨类组合的丰富度和丰富度峰值有延迟。这表明节肢动物在扩散和繁殖特征上的差异可能是造成腐肉节肢动物群落多样性动态反差的原因，并进一步突出了腐肉作为生态系统中多样性和异质性的驱动力的作用。
Carrion is an ephemeral and nutrient-rich resource that attracts a diverse array of arthropods as it decomposes. Carrion-associated mites often disperse between animal carcasses using phoresy, the transport of one species by another. Yet few studies have contrasted the dynamics of mite assemblages with other insect taxa present at carrion. We examined and compared the changes in abundance, species richness and composition of mite and beetle assemblages sampled at kangaroo carcasses in a grassy eucalypt woodland at four different times over a 6-month period. We found that the majority of mites were phoretic, with the mesostigmatid genera Uroseius (Uropodidae), Macrocheles (Macrochelidae) and Parasitus (Parasitidae) the most abundant taxa (excluding astigmatid mites). Abundance and richness patterns of mites and beetles were very different, with mites reaching peak abundance and richness at weeks 6 and 12, and beetles at weeks 1 and 6. Both mites and beetles showed clear successional patterns via changes in species presence and relative abundance. Our study shows that mesostigmatid mite assemblages have a delay in peak abundance and richness relative to beetle assemblages. This suggests that differences in dispersal and reproductive traits of arthropods may contribute to the contrasting diversity dynamics of carrion arthropod communities, and further highlights the role of carrion as a driver of diversity and heterogeneity in ecosystems.