Silberfeld T., Bittner L., Fernandez-Garcia C., Cruaud C., Rousseau F., de Reviers B., Leliaert F., Payri Claude, De Clerck O. (2013). Species diversity, phylogeny and large scale biogeographic patterns of the genus Padina (Phaeophyceae, Dictyotales). Journal of Phycology, 49 (1), p. 130-142. ISSN 0022-3646.
Titre du document
Species diversity, phylogeny and large scale biogeographic patterns of the genus Padina (Phaeophyceae, Dictyotales)
Année de publication
2013
Auteurs
Silberfeld T., Bittner L., Fernandez-Garcia C., Cruaud C., Rousseau F., de Reviers B., Leliaert F., Payri Claude, De Clerck O.
Source
Journal of Phycology, 2013,
49 (1), p. 130-142 ISSN 0022-3646
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.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Limnologie biologique / Océanographie biologique [034]
;
Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
MONDE ; ZONE TROPICALE ; ZONE TEMPEREE
Localisation
Fonds IRD [F B010059019]
Identifiant IRD
fdi:010059019
