Evolution of host use in fungivorous ciid beetles (Coleoptera: Ciidae): molecular phylogeny focusing on Japanese taxa.
Evolution of host use in fungivorous ciid beetles (Coleoptera: Ciidae): molecular phylogeny focusing on Japanese taxa.
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食真菌甲虫（鞘翅目：Ciidae）宿主使用的演变：关注日本类群的分子系统发育。
DOI：
10.1016/j.ympev.2021.107197
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发表时间：
2021
影响因子：
4.1
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Kobayashi;T. & Sota;T.
营养级之间的消费者-资源相互作用是塑造昆虫多样性的普遍和重要因素。然而，食菌昆虫的寄主特异性和保守性等饮食模式还没有得到充分的研究。在这里，我们重建的进化历史的主机使用在食真菌的cid甲虫（鞘翅目：Ciidae）和主机保守性进行了测试。利用超保守元件（ultraconserved elements，UCEs）的序列数据，对日本49个种的系统发育关系进行了分析。此外，三个基因（COI，28 S rRNA，18 S rRNA）的序列进行了分析，以重建130 OTU从更广泛的分类群和地理区域使用UCE树作为骨干拓扑的遗传。我们发现，Ciini和Orophiini没有恢复为单系类群。如前所述，最大的属CisLatreille也不是单系的。在这两个数据集的主机使用的状态重建表明，Ciidae物种聚类主机使用组在树。与随机转移假设下的预期相比，这一模式得到了显著降低的转移率的证实。观察到的保守性，在主机使用暗示这些甲虫具有独特的适应特定的真菌类群，就像草食性昆虫适应特定的植物类群。
Consumer–resource interactions between trophic levels are ubiquitous and important factors in shaping the diversity of insects. However, dietary patterns such as host specificity and conservatism have been insufficiently examined in fungivorous insects. Here we reconstructed the evolutionary history of host use in fungivorous ciid beetles (Coleoptera: Ciidae) and tested for host conservatism. Phylogenetic relationships among 49 species from Japan were inferred by using a large sequence data set from ultraconserved elements (UCEs). In addition, sequences of three genes (COI, 28S rRNA, 18S rRNA) were analyzed to reconstruct the phylogeny for 130 OTUs from a broader range of taxa and geographic regions using the UCE tree as a backbone topology. We found that Ciini and Orophiini are not recovered as reciprocally monophyletic groups. As previously suggested, the largest genusCisLatreille was also not monophyletic. Ancestral-state reconstruction of host use in both datasets showed that Ciidae species were clustered by host-use group across the tree. This pattern was confirmed by the significantly lower transition rate compared with expectations under the random shift hypothesis. The observed conservatism in host use implied these beetles possess unique adaptations to specific fungal taxa, just as herbivorous insects are adapted to specific plant taxa.