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- Title
Halichoeres gurrobyi, a new labrid fish (Teleostei: Labridae) from Mauritius in the southwestern Indian Ocean, with a review of the H. zeylonicus species complex.
- Authors
VICTOR, BENJAMIN C.
- Abstract
The new labrid fish species, Halichoeres gurrobyi n. sp., is described from specimens collected in Mauritius, in the southwestern Indian Ocean. The new species is part of the yellow-striped initial-phase species complex of Halichoeres, comprising several species found in the Indo-Pacific, including the type species for the genus Halichoeres Rüppell. Two of the closest relatives of H. gurrobyi also occur in Mauritius, i.e. H. zeylonicus (the southwestern Indian Ocean [SWIO] genovariant) and the rare deep-reef H. pelicieri. The initial-phases of these species are similar and have been confused, but DNA barcoding clearly shows three distinct DNA lineages in the SWIO and helps resolve the diagnostic characters. The terminal-phase (TP) male of the new species is unknown. The new species is 9% divergent in the sequence of the mtDNA-barcode marker COI (minimum interspecific divergence, pairwise; 9.6% K2P distance) from its nearest relative, H. pelicieri. A neighbor-joining tree of COI mtDNA sequences is presented for the species complex.
- Subjects
MAURITIUS; HALICHOERES; FISH morphology; FISHES; MITOCHONDRIAL DNA; FISH phylogeny; CLASSIFICATION of fish; SPECIES diversity
- Publication
Journal of the Ocean Science Foundation, 2016, Vol 22, p10
- ISSN
1937-7835
- Publication type
Article
- DOI
10.5281/zenodo.57088