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Cheilinini

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Cheilinini
Humphead wrasse
(Cheilinus undulatus)
Slingjaw wrasse
(Epibulus insidiator)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Family: Labridae
Tribe: Cheilinini
Russell, 1988
Genus

The cheiline wrasses are saltwater fish of the tribe Cheilinini, a subgroup of the wrasse family (Labridae).

Taxonomy

Based on the Westneat & Alfaro (2005) molecular phylogenetic study, the wrasses of the tribe Cheilinini are most closely related to parrotfish (tribe Scarini); cheilines and scarines are sister groups.

Although the 4 genera in Cheilinini do form a monophyletic clade with each other, their relationship with each other is somewhat problematic as the genus Cheilinus appears to be paraphyletic.

The relationship of the genus Doratonotus with Cheilinini is uncertain. Initially, based on morphological analyses by Westneat (1993), Cheilinini was considered to be composed of two subgroups, i.e., the "cheiline" wrasses and the "pseudocheiline" wrasses. At the time, the adjective "cheilinin" was used to describe fish in the tribe Cheilinini. Doratonotus was considered to be the basalmost "cheiline" genus. However, Westneat & Alfaro (2005) showed that "pseudocheilines" and "cheilines" were not each other's closest relatives. As Doratonotus was not included in study, it's placement relative to Cheilinini is uncertain. The pseudocheiline wrasses eventually formed the tribe Cirrhilabrini, originally proposed in 1999, but are still sometimes informally referred to as pseudocheilines despite this.

Biology

Cheiline wrasses largely exhibit monandric protogyny. In such cases, this means all individuals are born functionally female, but mature females can change sex and become functionally male. However, some species also exhibit diandric protogyny and functional gonochorism. In diandric protogyny, individuals can be born either female or male, and individuals that are born female can become male. In functional gonochorism, individuals are born functionally either male or female, and remain so for their entire life; there is no sex change.

Genera

Genus Image
Cheilinus

C. lunulatus

Epibulus

E. brevis

Oxycheilinus

O. digramma

Wetmorella

W. albofasciata

References

  1. ^ Westneat, Mark W.; Alfaro, Michael E. (August 2005). "Phylogenetic relationships and evolutionary history of the reef fish family Labridae". Molecular Phylogenetics and Evolution. 36 (2): 370–390. Bibcode:2005MolPE..36..370W. doi:10.1016/j.ympev.2005.02.001. PMID 15955516.
  2. Westneat, Mark W (1993-01-01). "Phylogenetic Relationships of the Tribe Cheilinini (Labridae: Perciformes)". Bulletin of Marine Science. 52 (1): 351–394.
  3. Tea, Yi-Kai; Allen, Gerald R.; Goatley, Christopher H. R.; Gill, Anthony C.; Frable, Benjamin W. (2021-11-05). "Redescription of Conniella apterygia Allen and its reassignment in the genus Cirrhilabrus Temminck and Schlegel (Teleostei: Labridae), with comments on cirrhilabrin pelvic morphology". Zootaxa. 5061 (3): 493–509. doi:10.11646/zootaxa.5061.3.5. ISSN 1175-5334. PMID 34810612.
  4. Hughes, Lily C; Nash, Chloe M; White, William T; Westneat, Mark W (2023-05-01). "Concordance and Discordance in the Phylogenomics of the Wrasses and Parrotfishes (Teleostei: Labridae)". Systematic Biology. 72 (3): 530–543. doi:10.1093/sysbio/syac072. ISSN 1063-5157. PMID 36331534.
  5. Lowe, Jake R.; Russ, Garry R.; Bucol, Abner A.; Abesamis, Rene A.; Choat, John H. (October 2021). "Geographic variability in the gonadal development and sexual ontogeny of Hemigymnus , Cheilinus and Oxycheilinus wrasses among Indo‐Pacific coral reefs". Journal of Fish Biology. 99 (4): 1348–1363. doi:10.1111/jfb.14842. ISSN 0022-1112.
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