@article{fdi:010040593, title = {{P}hylogeography of the piranha genera {S}errasalmus and {P}ygocentrus : implications for the diversification of the {N}eotropical ichthyofauna}, author = {{H}ubert, {N}icolas and {D}uponchelle, {F}abrice and {N}unez, {J}esus and {G}arcia {D}avila, {C}. and {P}augy, {D}idier and {R}enno, {J}ean-{F}ran{\c{c}}ois}, editor = {}, language = {{ENG}}, abstract = {{T}he phylogenetic relationships within the piranhas were assessed using mitochondrial sequences with the aim of testing several hypotheses proposed to explain the origin of {N}eotropical diversity (palaeogeography, hydrogeology and museum hypotheses). {S}equences of the ribosomal 16{S} gene (510 bp) and control region (980 bp) were obtained from 15 localities throughout the main {S}outh {A}merican rivers for 21 of the 28 extant piranha species. {T}he results indicate that the genus {S}errasalmus is monophyletic and comprises three major clades. {T}he phylogeographical analyses of these clades allowed the identification of five vicariant events, extensive dispersal and four lineage duplications suggesting the occurrence of sympatric speciation. {B}iogeographical patterns are consistent with the prediction made by the museum hypothesis that lineages from the {P}recambrian shields are older than those from the lowlands of the {A}mazon. {T}he vicariant events inferred here match the distribution of the palaeoarches and several postdispersal speciation events are identified, thereby matching the predictions of the palaeogeography and hydrogeology hypotheses, respectively. {M}olecular clock calibration of the control region sequences indicates that the main lineages differentiated from their most recent common ancestor at 9 million years ago in the proto {A}mazon-{O}rinoco and the present rate of diversification is the highest reported to date for large carnivorous {C}haraciformes. {T}he present results emphasize that an interaction among geology, sea-level changes, and hydrography created opportunities for cladogenesis in the piranhas at different temporal and geographical scales.}, keywords = {{A}mazon ; biogeography ; {B}rooks parsimony analysis ; molecular clock ; mt{DNA} ; phylogeny ; piranha}, booktitle = {}, journal = {{M}olecular {E}cology}, volume = {16}, numero = {10}, pages = {2115--2136}, ISSN = {0962-1083}, year = {2007}, DOI = {10.1111/j.1365-294{X}.2007.03267.x}, URL = {https://www.documentation.ird.fr/hor/fdi:010040593}, }