Phylogenetics and taxonomy of the scleractinian coral family Euphylliidae

Author:

Arrigoni Roberto1,Stolarski Jarosław2,Terraneo Tullia I.3,Hoeksema Bert W.45,Berumen Michael L.6,Payri Claude7,Montano Simone89,Benzoni Francesca6

Affiliation:

1. Department of Biology and Evolution of Marine Organisms (beom), Genoa Marine Centre (gmc), Stazione Zoologica Anton Dohrn – National Institute of Marine Biology, Ecology and Biotechnology, 16126 Genoa, Italy

2. Institute of Paleobiology, Polish Academy of Sciences, 00-818 Warsaw, Poland

3. Red Sea Research Center, Division of Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955–6900, Saudi Arabia

4. Taxonomy, Systematics and Geodiversity Group, Naturalis Biodiversity Center, 2333 CR Leiden, The Netherlands

5. Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9747 AG Groningen, The Netherlands

6. Red Sea Research Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955–6900, Saudi Arabia

7. UMR ENTROPIE (IRD, UR, CNRS), Institut de Recherche pour le Développement, 98848 Nouméa, New Caledonia, France

8. Earth and Environmental Science Department, University of Milano Bicocca, 20126 Milan, Italy

9. MaRHE Center (Marine Research and High Education Center), Magoodhoo Island, Faafu Atoll, Maldives

Abstract

Abstract The family Euphylliidae consists of reef-building zooxanthellate scleractinian corals distributed across the Indo-Pacific. Seven extant genera comprising a total of 22 valid species are currently recognised. Recent studies have re-organised the taxonomy of the family at the genus level based on molecular and morphological data, including a comprehensive revision of Euphyllia and the resurrection of Fimbriaphyllia. Here, three mitochondrial loci (coi, 12S rRNA, and 16S rRNA) were sequenced and morphological examinations were conducted at three scales (macro/micromorphology and microstructure of the skeleton, and polyp morphology) to study the phylogeny and taxonomy of Euphylliidae. We analysed a total of 11 valid species collected from seven Indo-Pacific localities. The monotypic genus Coeloseris, currently in Agariciidae, was also investigated since previous molecular data suggested a close relationship with the Euphylliidae. Molecular and morphological phylogenetic trees were broadly concordant in the definition of genus-level clades. All analysed genera, i.e., Ctenella, Euphyllia, Fimbriaphyllia, Galaxea, and Gyrosmilia, were reciprocally monophyletic based on molecular results. Coeloseris was nested within the family and, therefore, is formally moved into Euphylliidae. Updated morphological diagnoses are provided for each investigated genus. This study further demonstrated that a phylogenetic classification of scleractinian corals can be achieved by applying a combined morpho-molecular approach. Finally, we encourage phylogenetic and taxonomic studies of the euphylliid taxa not yet analysed molecularly, such as the monotypic genera Montigyra and Simplastrea.

Publisher

Brill

Subject

Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

Reference158 articles.

1. Taxonomic status of Euphylliidae corals in Peninsular Malaysia based on morphological structures and phylogenetic analyses using mitochondrial coi gene;Akmal, K.F.,2017

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4. A new sequence data set of ssu rRNA gene for Scleractinia and its phylogenetic and ecological applications;Arrigoni, R.,2017

5. Towards a rigorous species delimitation framework for scleractinian corals based on rad sequencing: the case study of Leptastrea from the Indo-Pacific;Arrigoni, R.,2020

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