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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Molecular Phylogeny of the Family Capitellidae (Annelida)
| Title: | Molecular Phylogeny of the Family Capitellidae (Annelida) |
| Authors: | Tomioka, Shinri Browse this author | | Kakui, Keiichi Browse this author →KAKEN DB | | Kajihara, Hiroshi Browse this author →KAKEN DB |
| Keywords: | Capitellida | | capitellids | | Scolecida | | Sedentaria | | systematics |
| Issue Date: | Oct-2018 |
| Journal Title: | Zoological Science |
| Volume: | 35 |
| Issue: | 5 |
| Start Page: | 436 |
| End Page: | 445 |
| Publisher DOI: | 10.2108/zs180009 |
| Abstract: | Capitellids have emerged as monophyletic in most but not all recent molecular phylogenies, indicating that more extensive taxon sampling is necessary. In addition, monophyly of most or all capitellid genera was questionable, as some diagnostic characters vary ontogenetically within individuals. We tested the monophyly of Capitellidae and eight capitellid genera using phylogenetic analyses of combined 18S, 28S, H3, and COI gene sequences from 36 putative capitellid species. In our trees, Capitellidae formed a monophyletic sister group to Echiura, and Capitella was also monophyletic, separated by a long branch from other capitellids. Well-supported clades each containing representatives of different genera, or containing a subset of species within a genus, indicated that Barantolla, Heteromastus, and Notomastus are likely not monophyletic. We mapped three morphological characters traditionally used to define capitellid genera (head width relative to width of first segment, number of thoracic segments, and number of segments with capillary chaetae) onto our tree. While Capitella showed unique character states, states in the other genera were decidedly not phylogenetically informative. Morphology-based capitellid taxonomy will require a fine-scale reevaluation of character states and detection of new characters. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75605 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 角井 敬知
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