Morphological and ecological studies on the diversity and function of domatia in Viburnum

叶片是一种植物器官，由于其在三营养体相互作用中的作用，在生态学中受到越来越多的关注。然而，很少有研究从进化历史或生态学的角度来考察某一植物分类群内的区域多样性。我们调查了Vibrunum属的蠕形螨类的变异，比较了它们的形态和系统发育(由其他文献获得)，并观察了它们在不同种类、不同地点和不同季节的蠕形动物区系。结果表明，有无寄生虫与Vibrunum物种的分布或系统发育之间没有特定的对应关系，我们研究的几种Vibrunum物种在不同的种类、地点或季节有不同的蠕形动物区系或生物量。这些结果表明，Vibrunum的主门可能在该属的不同支系中独立进化，并且主门与螨类之间的相互作用不是那么严格，而是相当松散，取决于地点或季节。

Leaf domatia are plant organs that have received increasing attention in ecology because of their role in tritrophic interactions. Still there are few studies examining the domatium diversity within a certain plant taxon in terms of their evolutionary history or ecology. We investigated the variation of domatia in the genus Vibrunum, comparing their morphology and phylogeny (obtained by other literatures), and observing their mite fauna in different species, different locality, and different seasons. The results are that there was not a specific correspondence between the presence/absence of domatia and the distribution or phylogeny of the Vibrunum species, and that different fauna or biomass of mites were recognized in the different species, locality, or seasons for domatia of a few Vibrunum species we examined. These results suggest that the domatia of Vibrunum might have evolved independently in different clades of the genus, and that interaction between the domatia and the mites are not so strict but rather loose, depending on the place or seasons.