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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Biogeography of the neotropical freshwater stingrays (Myliobatiformes: Potamotrygoninae) reveals effects of continent-scale paleogeographic change and drainage evolution

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Fontenelle, Joao Pedro [1, 2] ; Portella Luna Marques, Fernando [3] ; Kolmann, Matthew A. [4] ; Lovejoy, Nathan R. [1, 2]
Total Authors: 4
[1] Univ Toronto Scarborough, Dept Biol Sci, 1285 Mil Trail, Toronto, ON M1C 1A4 - Canada
[2] Univ Toronto Scarborough, Dept Phys & Environm Sci, Toronto, ON - Canada
[3] Univ Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo, SP - Brazil
[4] Univ Michigan, Museum Paleontol, Biol Sci Bldg, Ann Arbor, MI 48109 - USA
Total Affiliations: 4
Document type: Journal article
Source: Journal of Biogeography; v. 48, n. 6 MAR 2021.
Web of Science Citations: 1

Aim Paleogeographic changes have had profound effects on the evolution and diversity of the Neotropical biota. However, the influence of marine incursions on the origin, diversification, and distribution of fishes is still incompletely understood. We investigate the biogeographical and chronological patterns of diversification for the marine-derived Neotropical freshwater stingrays (subfamily Potamotrygoninae) at a continental scale. Location Neotropics, South America. Taxa Neotropical freshwater stingrays. Subfamily Potamotrygoninae (Myliobatiformes: Chondrichthyes). Methods We generated a time-calibrated phylogeny for 35 of the 38 valid species of Neotropical freshwater stingrays, from most of the major river basins of South America, using four genes. We used BEAST2 to determine the chronology of population and species divergence events, and ``BioGeoBEARS{''} to infer historical biogeographic patterns. Results The Potamotrygoninae originated during the early/middle Miocene in the upper Amazon region. We recover clades associated with particular geographic areas and detect a recurrent pattern of upper Amazon clades sister to clades in adjacent basins. The timing of dispersals from the upper Amazon to adjacent areas corresponds with the end of the Pebas wetlands. Lower Amazon and Shield associated taxa are relatively young. Main conclusions We propose that the origin of the Neotropical freshwater stingrays is related to marine incursions that occurred during the Oligocene/Miocene. Subsequent diversification of Potamotrygoninae occurred in the Pebas wetland system in the upper Amazon with colonization of adjacent basins. These movements were generally unidirectional, with few lineages returning to the upper Amazon, and we speculate that ecological factors drove this pattern. We observed a burst of potamotrygonine diversification 5 Ma that appears to be related to the modern channelization of the Amazon Basin. (AU)

FAPESP's process: 08/09436-8 - Phylogenetic position and patterns of diversification in Rhinebothroides (Eucestoda: Tetraphillidea: Phyllobothriidae)
Grantee:Fernando Portella de Luna Marques
Support Opportunities: Regular Research Grants
FAPESP's process: 11/12249-8 - Diversification and species boundaries of Rhinebothrium (Cestoda; Rhinebothriidea) in South American
Grantee:Fernando Portella de Luna Marques
Support Opportunities: Regular Research Grants - Publications - Scientific article
FAPESP's process: 05/01299-3 - Phylogeny and phylogeography of Monogenoidea (Platyhelminthes: Cercomeromorpha) parasites of Potamotrygonidae (Condrichthyes: Rajiformes: Myliobatoidei)
Grantee:Fernando Portella de Luna Marques
Support Opportunities: Regular Research Grants