Species richness and faunal similarity of arboreal insect herbivores
Species richness and faunal similarity of arboreal insect herbivores
复制标题
树栖昆虫食草动物的物种丰富度和区系相似性
作者：
S. Neuvonen;P. Niemelä
利用英国和芬兰的资料，分析了影响木本植物食叶鳞翅目和锯蝇物种丰富度和区系相似性的因素。寄主植物频率、每分类群的植物种类数和寄主近缘植物数量可解释芬兰乔灌木大鳞翅目物种丰富度变化的62 ~ 85%。在英国乔木上，每个植物分类群的种类范围和数量共同解释了47-52%的小鳞翅目和大鳞翅目物种丰富度的变化。每个寄主植物分类群的植物种类数解释了芬兰乔木和灌木属锯蝇物种丰富度的87%。寄主植物属的平均频率解释了残留变异的很大一部分，使决定系数提高到97%。大鳞翅目的区系相似性基于寄主植物属的分类相似性和生境相似性。在锯蝇中，植物属之间的区系相似性较低，并以分类亲缘关系为基础。阐述并讨论了植物-食草动物共同进化理论与食草动物物种丰富度之间的联系。
Factors affecting the species richness and faunal similarities of leaf eating Lepidoptera and sawflies on woody plants were analysed using British and Finnish data. Host plant frequency, the number of plant species per taxon and the number of relatives of host plants explained a total of 62-85% of the variation in macrolepidopteran species richness on Finnish trees and shrubs. On British trees the range and number of species per plant taxon explained together 47-52% of the variation in microand macrolepidopteran species richness. The number of plant species per host plant taxon explained 87% of the sawfly species richness on Finnish tree and shrub genera. The average frequency of host plant genera explained a significant portion of the residual variation, increasing the coefficient of determination to 97%. Macrolepidopteran faunal similarities were based on taxonomic and habitat similarities of host plant genera. In sawflies the faunal similarity between plant genera was low and was based on taxonomic relatedness. Connections between theories of plant-herbivore coevolution and species richness of herbivores are described and discussed.