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    Species delimitation in the reef coral genera Echinophyllia and Oxypora (Scleractinia, Lobophylliidae) with a description of two new species

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    Type
    Article
    Authors
    Arrigoni, Roberto
    Berumen, Michael L. cc
    Chen, Chaolun Allen
    Terraneo, Tullia Isotta cc
    Baird, Andrew H. cc
    Payri, Claude
    Benzoni, Francesca
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Marine Science Program
    Red Sea Research Center (RSRC)
    KAUST Grant Number
    URF/1/1389-01-01
    FCC/1/1973-07
    Date
    2016-09-09
    Online Publication Date
    2016-09-09
    Print Publication Date
    2016-12
    Permanent link to this record
    http://hdl.handle.net/10754/622338
    
    Metadata
    Show full item record
    Abstract
    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. (C) 2016 Elsevier Inc. All rights reserved.
    Citation
    Arrigoni R, Berumen ML, Chen CA, Terraneo TI, Baird AH, et al. (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: 146–159. Available: http://dx.doi.org/10.1016/j.ympev.2016.08.023.
    Sponsors
    The authors are grateful to the three anonymous reviewers for their help and constructive comments. This project was supported by funding from KAUST (award # URF/1/1389-01-01, FCC/1/1973-07, and baseline research funds to ML Berumen). This research was undertaken in accordance with the policies and procedures of the King Abdullah University of Science and Technology (KAUST). Permissions relevant for KAUST to undertake the research have been obtained from the applicable governmental agencies in the Kingdom of Saudi Arabia. We wish to thank the captain and crew of the MV Dream Master, the KAUST Coastal and Marine Resources Core Lab, Malek Amr Gusti, and TH Sinclair-Taylor (KAUST). RA gratefully acknowledges the National Science Council of Taiwan (NSC) for his participation to Summer Program in Taiwan 2013, JD DiBattista (CURTIN) and P Saenz-Agudelo (UACH) for their assistance at KAUST, and D Maggioni (UNIMIB) for his stimulating conversations concerning species delimitation methods. A big grazie to P Galli (UNIMIB) for allowing coral collections in the Maldives at MaRHE Center, and to S Montano and D Seveso (UNIMIB) for their fieldwork support, grazie ragazzi. We are grateful to E Karsenti (EMBL) and E Bougois (Tara Expeditions), the OCEANS Consortium for allowing sampling during the Tara Oceans expedition in Djibouti, Gambier Islands, and Mayotte. We thank the commitment of the following people and additional sponsors who made this singular expedition possible: CNRS, EMBL, Genoscope/CEA, VIB, Stazione Zoologica Anton Dohrn, UNIMIB, ANR (projects POSEIDON/ANR-09-BLAN-0348, BIOMARKS/ANR-08-BDVA-003, PROMETHEUS/ANR-09-GENM-031, and TARA-GIRUS/ANR-09-PCS-GENM-218), EU FP7 (MicroB3/No.287589), FWO, BIO5, Biosphere 2, agnes b., the Veolia Environment Foundation, Region Bretagne, World Courier, Illumina, Cap L'Orient, the EDF Foundation EDF Diversiterre, FRB, the Prince Albert II de Monaco Foundation, Etienne Bourgois, the Tara schooner, and its captain and crew. Tara Oceans would not exist without continuous support from 23 institutes (http://oceans.taraexpeditions.org). This article is contribution number 45 of the Tara Oceans Expedition 2009-2012. New Caledonia data and specimens were obtained during the CORAL-CAL4 (http://dx.doi.org/10.17600/12100060), BIBELOT (http://dx.doi.org/10.17600/14003700), and CORALCAL5 (http://dx.doi.org/10.17600/15004300) expeditions on the RV Alis. The Madang expedition specimens were obtained during the
    Publisher
    Elsevier BV
    Journal
    Molecular Phylogenetics and Evolution
    DOI
    10.1016/j.ympev.2016.08.023
    PubMed ID
    27593164
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S1055790316302238
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ympev.2016.08.023
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Red Sea Research Center (RSRC); Marine Science Program

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