Publications des scientifiques de l'IRD

Arrigoni R., Berumen M. L., Chen C. A., Terraneo T. I., Baird A. H., Payri Claude, Benzoni F. (2016). Species delimitation in the reef coral genera Echinophyllia and Oxypora (Scleractinia, Lobophylliidae) with a description of two new species. Molecular Phylogenetics and Evolution, 105, p. 146-159. ISSN 1055-7903.

Titre du document
Species delimitation in the reef coral genera Echinophyllia and Oxypora (Scleractinia, Lobophylliidae) with a description of two new species
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000384964700012
Auteurs
Arrigoni R., Berumen M. L., Chen C. A., Terraneo T. I., Baird A. H., Payri Claude, Benzoni F.
Source
Molecular Phylogenetics and Evolution, 2016, 105, p. 146-159 ISSN 1055-7903
Scleractinian corals are affected by environment-induced phenotypic plasticity and intraspecific morphological variation caused by genotype. In an effort to identify new strategies for resolving this taxonomic issue, we applied a molecular approach for species evaluation to two closely related genera, Echinophyllia and Oxypora, for which few molecular data are available. A robust multi-locus phylogeny using DNA sequence data across four loci of both mitochondrial (COI, ATP6-NAD4) and nuclear (histone H3, ITS region) origin from 109 coral colonies was coupled with three independent putative species delimitation methods based on barcoding threshold (ABGD) and coalescence theory (PTP, GMYC). Observed overall congruence across multiple genetic analyses distinguished two traditional species (E. echinoporoides and O. convoluta), a species complex composed of E. aspera, E. orpheensis, E. tarae, and O. glabra, whereas O. lacera and E. echinata were indistinguishable with the sequenced loci. The combination of molecular species delimitation approaches and skeletal character observations allowed the description of two new reef coral species, E. bulbosa sp. n. from the Red Sea and E. gallii sp. n. from the Maldives and Mayotte. This work demonstrated the efficiency of multi-locus phylogenetic analyses and recently developed molecular species delimitation approaches as valuable tools to disentangle taxonomic issues caused by morphological ambiguities and to re-assess the diversity of scleractinian corals.
Plan de classement
Limnologie biologique / Océanographie biologique [034]
Description Géographique
MER ROUGE ; MAYOTTE ; MALDIVES
Localisation
Fonds IRD [F B010068231]
Identifiant IRD
fdi:010068231
Contact