Cirripectes matatakaro , a new species of combtooth blenny from the Central Pacific, illuminates the origins of the Hawaiian fish fauna

Included among the currently recognized 23 species of combtooth blennies of the genus (Blenniiformes: Blenniidae) of the Indo-Pacific are the Hawaiian endemic , and the widespread . During the course of a phylogeographic study of these species, a third species was detected, herein described as . The...

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Bibliographic Details
Published in:PeerJ (San Francisco, CA) CA), 2020-03, Vol.8, p.e8852-e8852, Article e8852
Main Authors: Hoban, Mykle L, Williams, Jeffrey T
Format: Article
Language:English
Subjects:
Analysis
Biodiversity
Biogeography
Blenniidae
Cacomantis variolosus
Chromis vanderbilti
Cirri
Cirripectes
Collections
Colonization
Coral reefs
Cytochrome oxidase
Discovery and exploration
Divergence
Endemic species
Endemism
Fish
Fishes
Geographical distribution
Geography
Marine Biology
Mitochondrial DNA
Morphology
Museums
New species
Oxidases
Phylogeny
Phylogeography
Taxonomy
Zoology
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Summary:Included among the currently recognized 23 species of combtooth blennies of the genus (Blenniiformes: Blenniidae) of the Indo-Pacific are the Hawaiian endemic , and the widespread . During the course of a phylogeographic study of these species, a third species was detected, herein described as . The new species is distinguished primarily by the configuration of the pore structures posterior to the lateral centers of the transverse row of nuchal cirri in addition to 12 meristic characters and nine morphometric characters documented across 72 specimens and ∼4.2% divergence in mtDNA cytochrome oxidase subunit I. The new species is currently known only from the Marquesas, Gambier, Pitcairns, Tuamotus, and Australs in the South Pacific, and the Northern Line Islands and possibly Johnston Atoll south of Hawai'i. Previous researchers speculated that the geographically widespread was included in an unresolved trichotomy with the Hawaiian endemic and other species based on a morphological phylogeny. Our molecular-phylogenetic analysis resolves many of the previously unresolved relationships within the genus and reveals as the sister lineage to the Hawaiian . The restricted geographic distribution of combines with its status as sister to to indicate a southern pathway of colonization into Hawai'i.
ISSN:2167-8359
2167-8359
DOI:10.7717/peerj.8852