Biology:Sedentaria
Sedentaria is a diverse clade of annelid worms. It is traditionally treated as a subclass of the paraphyletic class Polychaeta, but it is also a monophyletic group uniting several polychaetes and the monophyletic class Clitellata. It is the sister group of Errantia.[1]
Etymology
The name Sedentaria - to sit or remain in place - describes the habits of this group of worms, contrasted to its sister group, "Errantia" - meaning to wander. Thus, Sedentaria worms are known for staying in a certain vicinity: this includes tube-dwellers (see, Riftia), or burrowers, such as earthworms, who tend to stay localized in their tunnels.[2][3] By contrast, Errantia roam more freely.[4]
Phylogeny
The phylogeny of polychaetes is slowly being resolved. Sedentaria and Errantia are the two biggest clades of polychaetes, and together they compose clade Pleistoannelida. The Orbiniida are sister to all other Sedentaria lineages.[5] Other groups that are nested within Sedentaria are: Clitellata, the Sabellida/Spionida clade, Opheliida, Echiura, Cirratuliformia, Terebelliformia, Maldanomorpha and the families Siboglinidae and Capitellidae.[6][1][7]
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Some taxa, such as Spintheridae and Myzostomida, are still difficult to place due to their long branching, but they likely belong to either Errantia or Sedentaria.[1] Hrabeiella and Aeolosomatidae are likely closely related to Clitellata.[8]
References
- ↑ 1.0 1.1 1.2 "Current status of annelid phylogeny". Org Divers Evol 16 (2): 345–362. 2016. doi:10.1007/s13127-016-0265-7. Bibcode: 2016ODivE..16..345W. http://publication.plazi.org/id/FFAA8650DB19FFA7AD16FFE6FFACFFDC.
- ↑ "Sedentary" (in en). Online Etymology Dictionary. https://www.etymonline.com/word/sedentary.
- ↑ "Sedentary" (in en). Dictionary.com. https://www.dictionary.com/browse/sedentary.
- ↑ "Erratic" (in en). Online Etymology Dictionary. https://www.etymonline.com/search?q=erratic.
- ↑ "The evolution of annelids reveals two adaptive routes to the interstitial realm". Curr Biol 25 (15): 1993–1999. 3 August 2015. doi:10.1016/j.cub.2015.06.007. PMID 26212885. Bibcode: 2015CBio...25.1993S.
- ↑ Andrade, Sónia C.S.; Novo, Marta; Kawauchi, Gisele Y.; Worsaae, Katrine; Pleijel, Fredrik; Giribet, Gonzalo; Rouse, Greg W. (November 2015). "Articulating "Archiannelids": Phylogenomics and Annelid Relationships, with Emphasis on Meiofaunal Taxa". Molecular Biology and Evolution 32 (11): 2860–2875. doi:10.1093/molbev/msv157. PMID 26205969.
- ↑ "Phylogeny". Handbook of Zoology: Annelida. 1: Annelida Basal Groups and Pleistoannelida, Sedentaria I. De Gruyter. 2019. pp. 37–68. doi:10.1515/9783110291582-002. ISBN 9783110291469.
- ↑ Erséus, Christer; Williams, Bronwyn W.; Horn, Kevin M.; Halanych, Kenneth M.; Santos, Scott R.; James, Samuel W.; Creuzé des Châtelliers, Michel; Anderson, Frank E. (2020). "Phylogenomic analyses reveal a Palaeozoic radiation and support a freshwater origin for clitellate annelids" (in en). Zoologica Scripta 49 (5): 614–640. doi:10.1111/zsc.12426. ISSN 0300-3256. https://onlinelibrary.wiley.com/doi/10.1111/zsc.12426.
Wikidata ☰ Q9373141 entry
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