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Reinforcing and expanding the predictions of the disturbance vicariance hypothesis in Amazonian harlequin frogs: a molecular phylogenetic and climate envelope modelling approach

Lötters, Stefan und Van der Meijden, Arie und Rödder, Dennis und Köster, Timo E. und Kraus, Tanja und La Marca, Enrique und Haddad, Célio F.B. und Veith, Michael (2010) Reinforcing and expanding the predictions of the disturbance vicariance hypothesis in Amazonian harlequin frogs: a molecular phylogenetic and climate envelope modelling approach. Biodiversity and Conservation, 19 (8), Seiten 2125-2146. Springer Verlag. DOI: DOI 10.1007/s10531-010-9869-y.

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Offizielle URL: http://www.springerlink.com/content/0960-3115

Kurzfassung

The disturbance vicariance hypothesis (DV) has been proposed to explain speciation in Amazonia, especially its edge regions, e.g. in eastern Guiana Shield harlequin frogs (Atelopus) which are suggested to have derived from a cool-adapted Andean ancestor. In concordance with DV predictions we studied that (i) these amphibians display a natural distribution gap in central Amazonia; (ii) east of this gap they constitute a monophyletic lineage which is nested within a pre-Andean/western clade; (iii) climate envelopes of Atelopus west and east of the distribution gap show some macroclimatic divergence due to a regional climate envelope shift; (iv) geographic distributions of climate envelopes of westernand eastern Atelopus range into central Amazonia but with limited spatial overlap. We tested if presence and apparent absence data points of Atelopus were homogenously distributed with Ripley's K function. A molecular phylogeny (mitochondrial 16S rRNA gene) was reconstructed using Maximum Likelihood and Bayesian Inference to study if Guianan Atelopus constitute a clade nested within a larger genus phylogeny. We focused on climate envelope divergence and geographic distribution by computing climatic envelope models with MaxEnt based on macroscale bioclimatic parameters and testing them by using Schoener'™s index and modified Hellinger distance. We corroborated existing DV predictions and, for the first time, formulated new DV predictions aiming on species' climate envelope change. Our results suggest that cool-adapted Andean Atelopus ancestors had dispersed into the Amazon basin and further onto the eastern Guiana Shield where, under warm conditions, they were forced to change climate envelopes.

Dokumentart:Zeitschriftenbeitrag
Titel:Reinforcing and expanding the predictions of the disturbance vicariance hypothesis in Amazonian harlequin frogs: a molecular phylogenetic and climate envelope modelling approach
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Lötters, Stefanloetters@uni-trier.de
Van der Meijden, Ariefrog@arievandermeijden.nl
Rödder, Dennisroedder@uni-trier.de
Köster, Timo E.veith@uni-trier.de
Kraus, Tanjatanja.kraus@dlr.de
La Marca, EnriqueNICHT SPEZIFIZIERT
Haddad, Célio F.B.NICHT SPEZIFIZIERT
Veith, Michaelveith@uni-trier.de
Datum:6 Juni 2010
Erschienen in:Biodiversity and Conservation
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:19
DOI :DOI 10.1007/s10531-010-9869-y
Seitenbereich:Seiten 2125-2146
Verlag:Springer Verlag
Status:veröffentlicht
Stichwörter:Atelopus, Bayesian inference, Bioclimate, MaxEnt, Maximum likelihood, Ripley’s K function, South America
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum
Hinterlegt von: Dr. Tanja Kraus
Hinterlegt am:04 Okt 2010 12:49
Letzte Änderung:19 Apr 2013 11:19

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