The making of a branching annelid: An analysis of complete mitochondrial genome and ribosomal data of Ramisyllis multicaudata
Entity
UAM. Departamento de BiologíaPublisher
Nature Publishing GroupDate
2015-07-17Citation
10.1038/srep12072
Scientific Reports 5 (2015): 12072
ISSN
2045-2322DOI
10.1038/srep12072Funded by
This study has been partly supported by a Geddes visiting fellowship from the Australian Museum and received funding from the DFG (BL787/5–1)Editor's Version
http://dx.doi.org/10.1038/srep12072Subjects
Ramisyllis multicaudata; Syllids; Mitochondrial; Ramisyllis and Trypanobia; Long branches; Biología y Biomedicina / BiologíaAbstract
Ramisyllis multicaudata is a member of Syllidae (Annelida, Errantia, Phyllodocida) with a remarkable branching body plan. Using a next-generation sequencing approach, the complete mitochondrial genomes of R. multicaudata and Trypanobia sp. are sequenced and analysed, representing the first ones from Syllidae. The gene order in these two syllids does not follow the order proposed as the putative ground pattern in Errantia. The phylogenetic relationships of R. multicaudata are discerned using a phylogenetic approach with the nuclear 18S and the mitochondrial 16S and cox1 genes. Ramisyllis multicaudata is the sister group of a clade containing Trypanobia species. Both genera, Ramisyllis and Trypanobia, together with Parahaplosyllis, Trypanosyllis, Eurysyllis, and Xenosyllis are located in a long branched clade. The long branches are explained by an accelerated mutational rate in the 18S rRNA gene. Using a phylogenetic backbone, we propose a scenario in which the postembryonic addition of segments that occurs in most syllids, their huge diversity of reproductive modes, and their ability to regenerate lost parts, in combination, have provided an evolutionary basis to develop a new branching body pattern as realised in Ramisyllis
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Google Scholar:Aguado Molina, María Teresa
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Glasby, Christopher J.
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Schroeder, Paul C.
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Weigert, Anne
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Bleidorn, Christoph
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