Mitochondrial phylogenomics of Hemiptera reveals adaptive innovations driving the diversification of true bugs

作者：Li, Hu; Leavengood, John M., Jr.; Chapman, Eric G.; Burkhardt, Daniel; Song, Fan; Jiang, Pei; Liu, Jinpeng; Zhou, Xuguo^*; Cai, Wanzhi^*

来源：Proceedings of the Royal Society B, 2017, 284(1862): 20171223.

DOI：10.1098/rspb.2017.1223

• Hemiptera
• phylogeny
• evolutionary history
• ancestral character state reconstruction
• mitochondrial genome

Hemiptera, the largest non-holometabolous order of insects, represents approximately 7% of metazoan diversity. With extraordinary life histories and highly specialized morphological adaptations, hemipterans have exploited diverse habitats and food sources through approximately 300 Myr of evolution. To elucidate the phylogeny and evolutionary history of Hemiptera, we carried out the most comprehensive mitogenomics analysis on the richest taxon sampling to date covering all the suborders and infra-orders, including 34 newly sequenced and 94 published mitogenomes. With optimized branch length and sequence heterogeneity, Bayesian analyses using a site-heterogeneous mixture model resolved the higher-level hemipteran phylogeny as (Sternorrhyncha, (Auchenorrhyncha, (Coleorrhyncha, Heteroptera))). Ancestral character state reconstruction and divergence time estimation suggest that the success of true bugs (Heteroptera) is probably due to angiosperm coevolution, but key adaptive innovations (e.g. prognathous mouthpart, predatory behaviour, and haemelytron) facilitated multiple independent shifts among diverse feeding habits and multiple independent colonizations of aquatic habitats.

• 出版日期2017-9-13
• 单位中国农业大学