title: Stability versus diversity of the dentition during evolutionary radiation in cyprinine fish.
abstract: Evolutionary radiations, especially adaptive radiations, have been widely studied but mainly for recent events such as in cichlid fish or Anolis lizards. Here, we investigate the radiation of the subfamily Cyprininae, which includes more than 1300 species and is estimated to have originated from Southeast Asia around 55 Ma. In order to decipher a potential adaptive radiation, within a solid phylogenetic framework, we investigated the trophic apparatus, and especially the pharyngeal dentition, as teeth have proved to be important markers of ecological specialization. We compared two tribes within Cyprininae, Poropuntiini and Labeonini, displaying divergent dental patterns, as well as other characters related to their trophic apparatus. Our results suggest that the anatomy of the trophic apparatus and diet are clearly correlated and this explains the difference in dental patterns observed between these two tribes. Our results illustrate the diversity of mechanisms that account for species diversity in this very diverse clade: diversification of dental characters from an ancestral pattern on the one hand, conservation of a basal synapomorphy leading to ecological specialization on the other hand. By integrating morphological, ecological and phylogenetic analyses, it becomes possible to investigate ancient radiation events that have shaped the present diversity of species.
authors: Evo-devo of Vertebrate Dentition, Institut de Génomique Fonctionnelle de Lyon (IGFL), UMR CNRS 5242, Université de Lyon, Université Claude Bernard Lyon 1, , Ecole Normale Supérieure de Lyon, Lyon, France, Molecular Zoology, Institut de Génomique Fonctionnelle de Lyon (IGFL), UMR CNRS 5242, Université de Lyon, Université Claude Bernard Lyon 1, , Ecole Normale Supérieure de Lyon, Lyon, France, Department of Biology, Saint Louis University, , St Louis, MO 63103, USA, Centre de Recherches sur la Paléobiodiversité et les Paléoenvironnements (CRP2), Département Histoire de la Terre, UMR CNRS 7207, Muséum National d'Histoire Naturelle, , Paris, France, Laboratoire de Géologie de Lyon (LGLTPE), UMR CNRS 5276, Université de Lyon, Université Claude Bernard Lyon 1, , Ecole Normale Supérieure de Lyon, Lyon, France.
authors: Emmanuel
authors: E
authors: Pasco-Viel
authors: Lei
authors: L
authors: Yang
authors: Monette
authors: M
authors: Veran
authors: Vincent
authors: V
authors: Balter
authors: Richard L
authors: RL
authors: Mayden
authors: Vincent
authors: V
authors: Laudet
authors: Laurent
authors: L
authors: Viriot
mesh_terms: D000818:Animals; D005075:Biological Evolution; D003531:Cypriniformes / Q000033:anatomy & histology* / Q000145:classification / Q000502:physiology; D003817:Dentition; D019143:Evolution, Molecular; D049810:Genetic Speciation; D010802:Phylogeny
keywords: Cypriniformes; X-ray microtomography; dental morphology; ecological speciation