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03 Dec 2012
Status : this preprint was under review for the journal BG but the revision was not accepted.
Comprehensive phylogenetic reconstruction of relationships in Octocorallia (Cnidaria : Anthozoa ) from the Atlantic ocean using mtMutS and nad2 genes tree reconstructions
K. J. Morris , S. Herrera , C. Gubili , P. A. Tyler , A. Rogers , and C. Hauton
Despite being an abundant group of significant ecological importance the phylogenetic relationships of the Octocorallia remain poorly understood and very much understudied. We used 1132 bp of two mitochondrial protein-coding genes, nad2 and mtMutS (previously referred to as msh1 ), to construct a phylogeny for 161 octocoral specimens from the Atlantic, including both Isididae and non-Isididae species. We found that four clades were supported using a concatenated alignment. Two of these (A and B) were in general agreement with the of Holaxonia–Alcyoniina and Anthomastus–Corallium clades identified by previous work. The third and fourth clades represent a split of the Calcaxonia–Pennatulacea clade resulting in a clade containing the Pennatulacea and a small number of Isididae specimens and a second clade containing the remaining Calcaxonia. When individual genes were considered nad2 largely agreed with previous work with MtMutS also producing a fourth clade corresponding to a split of Isididae species from the Calcaxonia–Pennatulacea clade. It is expected these difference are a consequence of the inclusion of Isisdae species that have undergone a gene inversion in the mtMutS gene causing their separation in the MtMutS only tree. The fourth clade in the concatenated tree is also suspected to be a result of this gene inversion, as there were very few Isidiae species included in previous work tree and thus this separation would not be clearly resolved. A~larger phylogeny including both Isididae and non Isididae species is required to further resolve these clades.
Received: 16 Nov 2012 – Discussion started: 03 Dec 2012
K. J. Morris , S. Herrera , C. Gubili , P. A. Tyler , A. Rogers , and C. Hauton
Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
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Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
K. J. Morris , S. Herrera , C. Gubili , P. A. Tyler , A. Rogers , and C. Hauton
K. J. Morris , S. Herrera , C. Gubili , P. A. Tyler , A. Rogers , and C. Hauton
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