Galeommatoidea a superfamily of bivalves classified in the monotypic order Galeommatida.

Galeommatoidea
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Superorder: Imparidentia
Order: Galeommatida
Lemer et al., 2019
Superfamily: Galeommatoidea
Gray, 1840
Families

Galeommatoids exhibit symbiotic relationships with many different groups of benthic and burrowing invertebrates.[1] An ectocommensal species, "Parabonia" squillina, has been found to be nearly mutually exclusive with burrow-wall commensal species of Lysiosquilla.[2]They are capable of active locomotion, crawling on their foot like a snail.[3]

Galeommatoidea is a member of the heterodont bivalve clade Imparidentia, but its precise placement within that clade is poorly resolved.[4][5] As it falls outside of previously recognized imparidentian orders, it is classified in an order of its own, Galeommatida.[5] The monophyly of Galeommatoidea is strongly supported by molecular phylogenetic analyses.[1][4] However, the internal classification of Galeommatoidea is controversial, and it has been divided into various poorly-defined families that may not be monophyletic.[1] Over a dozen family names have been proposed within Galeommatoidea,[4] but as of 2024, only three families, Basterotiidae, Galeommatidae, and Lasaeidae, are accepted by MolluscaBase.[6]

Galeommatoidea is a species-rich group.[4] As of 2010, it was estimated that Galeommatoidea contained approximately 500 species in 100 genera.[7]

References

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  1. ^ a b c Goto, Ryutaro; Kawakita, Atsushi; Ishikawa, Hiroshi; Hamamura, Yoichi; Kato, Makoto (2012). "Molecular phylogeny of the bivalve superfamily Galeommatoidea (Heterodonta, Veneroida) reveals dynamic evolution of symbiotic lifestyle and interphylum host switching". BMC Evolutionary Biology. 12 (1): 172. Bibcode:2012BMCEE..12..172G. doi:10.1186/1471-2148-12-172. ISSN 1471-2148. PMC 3532221. PMID 22954375.
  2. ^ Harrison, Teal A.; Goto, Ryutaro; Li, Jingchun; Foighil, Diarmaid Ó (2024-08-05). "Within-host adaptive speciation of commensal yoyo clams leads to ecological exclusion, not co-existence". PeerJ. 12: e17753. doi:10.7717/peerj.17753. ISSN 2167-8359. PMC 11308998.
  3. ^ Mikkelsen, Paula M.; Bieler, Rudiger (1989). "Biology and comparative anatomy of Divariscintilla yoyo and D. troglodytes, two new species of Galeommatidae (Bivalvia) from stomatopod burrows in eastern Florida". Malacologia. 31 (1): 175–195.
  4. ^ a b c d Bieler, Rüdiger; Mikkelsen, Paula M.; Collins, Timothy M.; Glover, Emily A.; González, Vanessa L.; Graf, Daniel L.; Harper, Elizabeth M.; Healy, John; Kawauchi, Gisele Y.; Sharma, Prashant P.; Staubach, Sid; Strong, Ellen E.; Taylor, John D.; Tëmkin, Ilya; Zardus, John D.; Clark, Stephanie; Guzmán, Alejandra; McIntyre, Erin; Sharp, Paul; Giribet, Gonzalo (2014). "Investigating the Bivalve Tree of Life – an exemplar-based approach combining molecular and novel morphological characters". Invertebrate Systematics. 28 (1): 32. doi:10.1071/IS13010. ISSN 1445-5226.
  5. ^ a b Lemer, Sarah; Bieler, Rüdiger; Giribet, Gonzalo (2019-02-13). "Resolving the relationships of clams and cockles: dense transcriptome sampling drastically improves the bivalve tree of life". Proceedings of the Royal Society B: Biological Sciences. 286 (1896): 20182684. doi:10.1098/rspb.2018.2684. PMC 6408618. PMID 30963927.
  6. ^ "Galeommatoidea J. E. Gray, 1840". MolluscaBase. Retrieved 2024-07-04.
  7. ^ Huber, Markus (2010). Compendium of bivalves. Hackenheim: ConchBooks. ISBN 978-3-939767-28-2.