期刊
INVERTEBRATE SYSTEMATICS
卷 25, 期 2, 页码 106-142出版社
CSIRO PUBLISHING
DOI: 10.1071/IS11002
关键词
biogeography; Briggsidae; Grassatores; Guasiniidae; Insidiatores; molecular dating; Petrobunidae; Tithaeidae
资金
- Center for Nanoscale Studies at Harvard University
- MCZ Putnam Expedition Grants
- Goelet award
- Kalathia Family Trust
- Explorers Club
- Harvard University
We investigated the internal phylogeny of Laniatores, the most diverse suborder of Opiliones, using sequence data from 10 molecular loci: 12S rRNA, 16S rRNA, 18S rRNA, 28S rRNA, cytochrome c oxidase subunit I (COI), cytochrome b, elongation factor-1 alpha, histones H3 and H4, and U2 snRNA. Exemplars of all previously described families of Laniatores were included, in addition to two families - Petrobunidae, fam. nov. and Tithaeidae, fam. nov. - that we erect herein. Data analyses were based on maximum likelihood and Bayesian approaches on static alignments, and included phylogenetic tree estimation, molecular dating, and biogeographic analysis of ancestral area reconstruction. The results obtained include the monophyly of Laniatores and the infraorder Grassatores - the focus of this study - as well as support for numerous interfamilial relationships. The two new families described cluster with other South-east Asian families (Podoctidae and Epedanidae). Diversification of Laniatores is estimated at similar to 348 Mya, and origin of most Grassatores superfamilies occurs in a similar to 25 million year span of time immediately after the end-Permian mass extinction (254 Mya). Ancestral range reconstruction of the clade (Samooidea + Zalmoxoidea) suggests that the ancestral range of Samooidea comprises West Tropical Gondwana (West Africa + Neotropics), whereas that of Zalmoxoidea is exclusively Neotropical. The following additional taxonomic changes are proposed: (1) Remyus is transferred to Phalangodidae, and (2) Escadabiidae and Kimulidae are transferred to Zalmoxoidea.
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