Julidini

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Julidini
Sunset Wrasse, Emily Bay, Kingston 2899, Norfolk Island imported from iNaturalist photo 444014203 (cropped).jpg
Sunset wrasse ( Thalassoma lutescens )
Eastern King Wrasse, Orau Cove imported from iNaturalist photo 170288982 (cropped).jpg
Eastern king wrasse ( Coris sandeyeri )
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Family: Labridae
Tribe: Julidini
Russell, 1988
Genera

20., see text

The julidine wrasses are saltwater fish of the tribe Julidini, a subgroup of the wrasse family (Labridae). It contains the highest number of genera and species out of all the wrasse tribes, with 20 genera and over 200 species, [1] comprising almost a third of all wrasse species. [2]

Contents

Taxonomy

A 2005 molecular phylogenetic analysis strongly supports the monophyly of Julidini. [1] [2]

It also found that the cleaner wrasse genera that traditionally comprised the tribe Labrichthyini ( Labrichthys , Labropsis , Diproctacanthus , Larabicus , and Labroides ), although forming a monophyletic group, were all nested within Julidini. Labrichthys is the sister group to the other cleaner wrasse genera, [1] [2] and does not act as a cleaner; it is an obligate corallivore for its entire life. [3] Larabicus, Diproctacanthus, and Labropsis are cleaners only as juveniles and feed on corals as adults, while Labroides is a cleaner for its entire life. [3] [4] [5]

Thalassoma lunare with Gomphosus varius. Thalassoma lunare, Slaughter Bay, Kingston 2899, Norfolk Island imported from iNaturalist photo 333635337 (cropped).jpg
Thalassoma lunare with Gomphosus varius .

The tribe Pseudolabrini is likely the sister group of Julidini, if not nested within Julidini; the former is additionally supported by Hughes et al 2023. [1] [2]

Several genera in this tribe are problematic. Most notably, Halichoeres and Coris are paraphyletic or polyphyletic. [1] [2] Gomphosus has also been repeatedly found nested within Thalassoma . [2]

The difficulty in resolving relationships within Julidini is a result of the rapid speciation of julidine wrasses. [2]

Evolution

The tribe Julidini likely originated in the Eocene. It is hypothesized that the relatively warm and stable climate that followed the Early Eocene Climactic Optimum may have played a part in the diversification of julidine wrasses. Fossil julidine wrasses such as † Coris sigismundi have been found in rocks dating to the Miocene. [2]

Genera

GeneraImage
Anampses

Quoy & Gaimard, 1824

Labrido (Anampses twistii), mar Rojo, Egipto, 2023-04-19, DD 33.jpg

A. twistii

Coris

Lacépède, 1801

Coris bulbifrons 345561127 (cropped).jpg

C. bulbifrons

Diproctacanthus

Bleeker, 1862

Yellowtail tubelip (Diproctacanthus xanthurus) (46387007854) (cropped).jpg

D. xanthurus

Gomphosus

Lacépède, 1801

Gomphosus varius 1.jpg

G. varius

Halichoeres

Rüppell, 1835

Halichoeres hortulanus (phase terminale).jpg

H. hortulanus

Hemigymnus

Günther, 1861

Hemigymnus fasciatus.jpg

H. fasciatus

Hologymnosus

Lacépède, 1801

HologymAnnulatRLS.jpg

H. annulatus

Labrichthys

Bleeker, 1854

Tubelip wrasse (Labrichthys unilineatus) (46196860245).jpg

L. unilineatus

Labroides

Bleeker, 1851

Labrido limpiador comun (Labroides dimidiatus), mar Rojo, Egipto, 2023-04-17, DD 90 (cropped).jpg

L. dimidiatus

Labropsis

P. J. Schmidt, 1931

Allen's tubelip (Labropsis alleni) (46196863905) (cropped).jpg

L. alleni

Larabicus

Randall & Springer, 1973

Larabicus quadrilineatus 324697194 (cropped).jpg

L. quadrilineatus

Leptojulis

Bleeker, 1862

Shoulderspot Wrasse imported from iNaturalist photo 442742889 on 4 January 2025.png

L. cyanopleura

Macropharygodon

Bleeker, 1862

Shortnose Wrasse (cropped).jpg

M. geoffroy

Ophthalmolepis

Bleeker, 1862

Ophthalmolepis lineolata Maori wrasse PC269949 (cropped).JPG

O. lineolata

Parajulis

Bleeker, 1865

KyusenOsu (cropped).jpg

P. poecileptera

Pseudocoris

Bleeker, 1862

Pseudocoris bleekeri 1 (cropped).jpg

P. bleekeri

Pseudojuloides

Fowler, 1949

OtohimeBR (cropped).jpg

P. elongatus

Stethojulis

Günther, 1861

Fourline wrasse (Stethojulis trilineata) 1 (cropped).jpg

S. trilineata

Thalassoma

Swainson, 1839

Thalassoma rueppellii Red Sea (cropped).jpg

T. rueppellii

Xenojulis

de Beaufort, 1939

Lateral view of Xenojulis margaritaceus.jpg

X. margaritaceus

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References

  1. 1 2 3 4 5 Westneat, Mark W.; Alfaro, Michael E. (2005-03-11). "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. 1 2 3 4 5 6 7 8 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.
  3. 1 2 Cole, A. J. (2010-03-01). "Cleaning to corallivory: ontogenetic shifts in feeding ecology of tubelip wrasse". Coral Reefs. 29 (1): 125–129. doi:10.1007/s00338-009-0563-z. ISSN   1432-0975.
  4. Grutter, Alexandra S.; Feeney, William E. (2016-09-01). "Equivalent cleaning in a juvenile facultative and obligate cleaning wrasse: an insight into the evolution of cleaning in labrids?". Coral Reefs. 35 (3): 991–997. doi:10.1007/s00338-016-1460-x. ISSN   1432-0975.
  5. Baliga, Vikram B.; Law, Chris J. (2016-01-01). "Cleaners among wrasses: Phylogenetics and evolutionary patterns of cleaning behavior within Labridae". Molecular Phylogenetics and Evolution. 94: 424–435. doi:10.1016/j.ympev.2015.09.006. ISSN   1055-7903.