Farrell BD
Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA. E-mail:
Science. 1998 Jul 24;281(5376):555-9. doi: 10.1126/science.281.5376.555.
The phylogeny of the Phytophaga, the largest and oldest radiation of herbivorous beetles, was reconstructed from 115 complete DNA sequences for the 18S nuclear ribosomal subunit and from 212 morphological characters. The results of these analyses were used to interpret the role of angiosperms in beetle diversification. Jurassic fossils represent basal lineages that are still associated with conifers and cycads. Repeated origins of angiosperm-feeding beetle lineages are associated with enhanced rates of beetle diversification, indicating a series of adaptive radiations. Collectively, these radiations represent nearly half of the species in the order Coleoptera and a similar proportion of herbivorous insect species.
植食亚目是食草甲虫中最大且最古老的演化支，其系统发育是通过18S核糖体亚基的115个完整DNA序列以及212个形态特征重建的。这些分析结果被用于阐释被子植物在甲虫多样化过程中的作用。侏罗纪化石代表了仍与针叶树和苏铁相关的基部谱系。以被子植物为食的甲虫谱系的多次起源与甲虫多样化速率的提高相关，表明了一系列适应性辐射。总体而言，这些辐射代表了鞘翅目近一半的物种以及类似比例的食草昆虫物种。
