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Free Content Phylogenetic relationships of Indo-Pacific coral gobies of the genus Gobiodon (Teleostei: Gobiidae), based on morphological and molecular data

Gobiodon species are coral-commensal gobiid fishes which occur throughout much of the Indo-Pacific Region. Species-level phylogenetic relationships were analyzed using mitochondrial DNA sequences. Portions of the 12S and 16S rRNA mitochondrial genes were selected for analysis. A search was made for the most parsimonious trees (maximum parsimony), the result of which was two trees with a consistency index of 0.620 and length of 753 steps. Bootstrap support and decay values were calculated for each resolved node. Many parts of the trees were well-supported, but with lower support at intermediate levels. Monophyly of Gobiodon is strongly supported (bootstrap support 100%, decay value 33). Inclusion of a set of morphological characters in a total evidence analysis provided additional support at some nodes resolved by the molecules-only analysis and also allowed a number of new resolutions. In the total evidence tree the specialized deep-bodied, compressed species, such as Gobiodon histrio (Valenciennes, 1837), Gobiodon unicolor (Castelnau, 1873), and Gobiodon brochus (Harold and Winterbottom, 1999), form a monophyletic group, whereas the molecular analysis has them paraphyletic. In both analyses, the morphologically generalized species, Gobiodon quinquestrigatus (Valenciennes, 1837), and related species form a clade which is sister group to all other Gobiodon species.

Document Type: Research Article

Publication date: January 1, 2008

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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