Spatial location dominates over host plant genotype in structuring an herbivore community.
Spatial location dominates over host plant genotype in structuring an herbivore community.
复制标题
在构建食草动物群落时，空间位置主导着寄主植物基因型。
DOI：
10.1890/09-1027.1
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发表时间：
2010
期刊：
影响因子：
4.8
通讯作者：
T. Roslin
中科院分区：
文献类型：
--
作者：
A. Tack;O. Ovaskainen;P. Pulkkinen;T. Roslin
最近的研究表明寄主植物基因型和空间环境在昆虫群落结构中的潜在作用。在本研究中，我们利用3个独立的栎（Quercus robur）上的草食性昆虫数据集来估计寄主植物基因型(G)、位置(E)和gx E相互作用对草食性昆虫群落结构的相对影响：在景观尺度（约5 km2）上复制一个普通花园实验；两个公共花园在区域尺度上分开（约10000平方公里）；并调查不同空间环境下野生树木的数据。实验和调查结果表明，在景观尺度上，昆虫群落受空间环境的影响较大，物种丰富度变化的32%受空间连通性的影响。相比之下，G和gx E在昆虫群落结构中起次要作用。将研究的空间尺度从局部（景观）层面扩展到区域层面，结果仍然相似。我们认为，在我们的研究系统中，空间过程在景观和区域尺度上对这些昆虫群落的结构起主要作用，而寄主植物基因型似乎是次要的。
Recent work has shown a potential role for both host plant genotype and spatial context in structuring insect communities. In this study, we use three separate data sets on herbivorous insects on oak (Quercus robur) to estimate the relative effects of host plant genotype (G), location (E), and the G x E interaction on herbivore community structure: a common garden experiment replicated at the landscape scale (approximately 5 km2); two common gardens separated at the regional scale (approximately 10 000 km2); and survey data on wild trees in various spatial settings. Our experiments and survey reveal that, at the landscape scale, the insect community is strongly affected by the spatial setting, with 32% of the variation in species richness explained by spatial connectivity. In contrast, G and G x E play minor roles in structuring the insect community. Results remained similar when extending the spatial scale of the study from the more local (landscape) level to the regional level. We conclude that in our study system, spatial processes play a major role in structuring these insect communities at both the landscape and regional scales, whereas host plant genotype seems of secondary importance.