Phylogeny and biogeography of a shallow water fish clade (Teleostei: Blenniiformes)

TitlePhylogeny and biogeography of a shallow water fish clade (Teleostei: Blenniiformes)
Publication TypeJournal Article
Year of Publication2013
AuthorsLin H.C, Hastings PA
JournalBmc Evolutionary Biology
Date Published2013/09
ISBN Number1471-2148
Accession NumberWOS:000325341400002

Background: The Blenniiformes comprises six families, 151 genera and  nearly 900 species of small teleost fishes closely associated with  coastal benthic habitats. They provide an unparalleled opportunity for  studying marine biogeography because they include the globally  distributed families Tripterygiidae (triplefin blennies) and Blenniidae  (combtooth blennies), the temperate Clinidae (kelp blennies), and three  largely Neotropical families (Labrisomidae, Chaenopsidae, and  Dactyloscopidae). However, interpretation of these distributional  patterns has been hindered by largely unresolved inter-familial  relationships and the lack of evidence of monophyly of the Labrisomidae.  Results: We explored the phylogenetic relationships of the Blenniiformes  based on one mitochondrial (COI) and four nuclear (TMO-4C4, RAG1,  Rhodopsin, and Histone H3) loci for 150 blenniiform species, and  representative outgroups (Gobiesocidae, Opistognathidae and  Grammatidae). According to the consensus of Bayesian Inference, Maximum  Likelihood, and Maximum Parsimony analyses, the monophyly of the  Blenniiformes and the Tripterygiidae, Blenniidae, Clinidae, and  Dactyloscopidae is supported. The Tripterygiidae is the sister group of  all other blennies, and the Blenniidae is the sister group of the  remaining blennies. The monophyly of the Labrisomidae is supported with  the exclusion of the Cryptotremini and inclusion of Stathmonotus, and we  elevate two subgenera of Labrisomus to establish a monophyletic  classification within the family. The monophyly of the Chaenopsidae is  supported with the exclusion of Stathmonotus (placed in the  Stathmonotini) and Neoclinus and Mccoskerichthys (placed in the  Neoclinini). The origin of the Blenniiformes was estimated in the  present-day IndoPacific region, corresponding to the Tethys Sea  approximately 60.3 mya. A largely Neotropical lineage including the  Labrisomidae, Chaenopsidae and Dactyloscopidae (node IV) evolved around  37.6 mya when the Neotropics were increasingly separated from the  IndoPacific, but well before the closure of the Tethys Sea.  Conclusions: Relationships recovered in this study are similar to those  of earlier analyses within the Clinidae and Chaenopsidae, and partially  similar within the Blenniidae, but tripterygiid relationships remain  poorly resolved. We present the first comprehensive phylogenetic  hypothesis for a monophyletic Labrisomidae with five tribes  (Labrisomini, Mnierpini, Paraclinini, Stathmonotini and Starksiini).  Global distributions of blenny genera included in our analysis support  the evolution of a largely Neotropical clade whose closest relatives  (clinids and cryptotremines) are temperate in distribution.

Short TitleBMC Evol. Biol.
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