Species Diversity, Phylogeny and Large Scale Biogeographic Patterns of the Genus Padina (Phaeophyceae, Dictyotales)
| Type | Article | ||||||||
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| Date | 2013-02 | ||||||||
| Language | English | ||||||||
| Author(s) | Silberfeld Thomas1, Bittner Lucie1, Fernandez-Garcia Cindy2, 3, Cruaud Corinne4, Rousseau Florence1, de Reviers Bruno1, Leliaert Frederik5, Payri Claude E.6, de Clerck Olivier5 | ||||||||
| Affiliation(s) | 1 : Museum Natl Hist Nat, UMR 7138, UPMC, MNHN,CNRS,Dept Systemat & Evolut,IRD Systemat, F-75231 Paris 05, France. 2 : UABCS, Programa Bot Marina, La Paz, Mexico. 3 : Univ Costa Rica, Escuela Biol, Ctr Invest Ciencias Mar & Limnol CIMAR, San Jose 2060, Costa Rica. 4 : Genoscope, Ctr Natl Sequencage, F-91057 Evry, France. 5 : Univ Ghent, Phycol Res Grp, B-9000 Ghent, Belgium. 6 : Inst Rech Dev, Biocomplexite Ecosyst Coralliens Indopacifique U2, Noumea 98848, New Caledonia. |
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| Source | Journal Of Phycology (0022-3646) (Wiley-blackwell), 2013-02 , Vol. 49 , N. 1 , P. 130-142 | ||||||||
| DOI | 10.1111/jpy.12027 | ||||||||
| WOS© Times Cited | 50 | ||||||||
| Keyword(s) | biogeography, brown algae, Dictyotales, general mixed yule-coalescent model, molecular phylogeny, Padina, Phaeophyceae, species delineation | ||||||||
| Abstract | The brown algal genus Padina (Dictyotales, Phaeophyceae) is distributed worldwide in tropical and temperate seas. Global species diversity and distribution ranges, however, remain largely unknown. Species-level diversity was reassessed using DNA-based, algorithmic species delineation techniques based on cox3 and rbcL sequence data from 221 specimens collected worldwide. This resulted in estimates ranging from 39 to 61 putative species (ESUs), depending on the technique as well as the locus. We discuss the merits, potential pitfalls, and evolutionary and biogeographic significance of algorithmic species delineation. We unveil patterns whereby ESUs are in all but one case restricted to either the Atlantic or Indo-Pacific Ocean. Within ocean basins we find evidence for the vast majority of ESUs to be confined to a single marine realm. Exceptions, whereby ESUs span up to three realms, are located in the Indo-Pacific Ocean. Patterns of range-restricted species likely arise by repeated founder events and subsequent peripatric speciation, hypothesized to dominate speciation mechanisms for coastal marine organisms in the Indo-Pacific. Using a three-gene (cox3, psaA and rbcL), relaxed molecular clock phylogenetic analysis we estimated divergence times, providing a historical framework to interpret biogeographic patterns. | ||||||||
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