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Leapfrogging into new territory: How Mascarene ridged frogs diversified across Africa and Madagascar to maintain their ecological niche
BM. Zimkus, LP. Lawson, MF. Barej, CD. Barratt, A. Channing, KM. Dash, JM. Dehling, L. Du Preez, PS. Gehring, E. Greenbaum, V. Gvoždík, J. Harvey, J. Kielgast, C. Kusamba, ZT. Nagy, M. Pabijan, J. Penner, MO. Rödel, M. Vences, S. Lötters,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, Research Support, N.I.H., Extramural, práce podpořená grantem, Research Support, U.S. Gov't, Non-P.H.S.
- MeSH
- analýza hlavních komponent MeSH
- Bayesova věta MeSH
- cytochromy b klasifikace genetika metabolismus MeSH
- DNA chemie izolace a purifikace metabolismus MeSH
- ekologie MeSH
- fylogeneze MeSH
- fylogeografie MeSH
- haplotypy MeSH
- homeodoménové proteiny klasifikace genetika metabolismus MeSH
- Ranidae klasifikace genetika MeSH
- RNA ribozomální 16S klasifikace genetika metabolismus MeSH
- sekvenční analýza DNA MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Research Support, N.I.H., Extramural MeSH
- Research Support, U.S. Gov't, Non-P.H.S. MeSH
- Geografické názvy
- Afrika MeSH
- Madagaskar MeSH
The Mascarene ridged frog, Ptychadena mascareniensis, is a species complex that includes numerous lineages occurring mostly in humid savannas and open forests of mainland Africa, Madagascar, the Seychelles, and the Mascarene Islands. Sampling across this broad distribution presents an opportunity to examine the genetic differentiation within this complex and to investigate how the evolution of bioclimatic niches may have shaped current biogeographic patterns. Using model-based phylogenetic methods and molecular-clock dating, we constructed a time-calibrated molecular phylogenetic hypothesis for the group based on mitochondrial 16S rRNA and cytochrome b (cytb) genes and the nuclear RAG1 gene from 173 individuals. Haplotype networks were reconstructed and species boundaries were investigated using three species-delimitation approaches: Bayesian generalized mixed Yule-coalescent model (bGMYC), the Poisson Tree Process model (PTP) and a cluster algorithm (SpeciesIdentifier). Estimates of similarity in bioclimatic niche were calculated from species-distribution models (maxent) and multivariate statistics (Principal Component Analysis, Discriminant Function Analysis). Ancestral-area reconstructions were performed on the phylogeny using probabilistic approaches implemented in BioGeoBEARS. We detected high levels of genetic differentiation yielding ten distinct lineages or operational taxonomic units, and Central Africa was found to be a diversity hotspot for these frogs. Most speciation events took place throughout the Miocene, including "out-of-Africa" overseas dispersal events to Madagascar in the East and to São Tomé in the West. Bioclimatic niche was remarkably well conserved, with most species tolerating similar temperature and rainfall conditions common to the Central African region. The P. mascareniensis complex provides insights into how bioclimatic niche shaped the current biogeographic patterns with niche conservatism being exhibited by the Central African radiation and niche divergence shaping populations in West Africa and Madagascar. Central Africa, including the Albertine Rift region, has been an important center of diversification for this species complex.
Department of Biology Tidewater Community College 120 Campus Dr Portsmouth VA 23701 USA
Department of Biology University of Copenhagen Copenhagen Denmark
Harvey Ecological 35 Carbis Road Pietermaritzburg 3201 KwaZulu Natal South Africa
Institute of Vertebrate Biology Czech Academy of Sciences 603 65 Brno Czech Republic
Museum of Comparative Zoology Harvard University Cambridge MA 02138 USA
National Museum Department of Zoology 19300 Prague Czech Republic
South African Institute for Aquatic Biodiversity Somerset Street Grahamstown 6139 South Africa
Trier University Department of Biogeography 54286 Trier Germany
Wildlife Ecology and Management University of Freiburg Tennenbacher Str 4 79106 Freiburg Germany
Citace poskytuje Crossref.org
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- $a Zimkus, Breda M $u Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA. Electronic address: bzimkus@oeb.harvard.edu.
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- $a Leapfrogging into new territory: How Mascarene ridged frogs diversified across Africa and Madagascar to maintain their ecological niche / $c BM. Zimkus, LP. Lawson, MF. Barej, CD. Barratt, A. Channing, KM. Dash, JM. Dehling, L. Du Preez, PS. Gehring, E. Greenbaum, V. Gvoždík, J. Harvey, J. Kielgast, C. Kusamba, ZT. Nagy, M. Pabijan, J. Penner, MO. Rödel, M. Vences, S. Lötters,
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- $a The Mascarene ridged frog, Ptychadena mascareniensis, is a species complex that includes numerous lineages occurring mostly in humid savannas and open forests of mainland Africa, Madagascar, the Seychelles, and the Mascarene Islands. Sampling across this broad distribution presents an opportunity to examine the genetic differentiation within this complex and to investigate how the evolution of bioclimatic niches may have shaped current biogeographic patterns. Using model-based phylogenetic methods and molecular-clock dating, we constructed a time-calibrated molecular phylogenetic hypothesis for the group based on mitochondrial 16S rRNA and cytochrome b (cytb) genes and the nuclear RAG1 gene from 173 individuals. Haplotype networks were reconstructed and species boundaries were investigated using three species-delimitation approaches: Bayesian generalized mixed Yule-coalescent model (bGMYC), the Poisson Tree Process model (PTP) and a cluster algorithm (SpeciesIdentifier). Estimates of similarity in bioclimatic niche were calculated from species-distribution models (maxent) and multivariate statistics (Principal Component Analysis, Discriminant Function Analysis). Ancestral-area reconstructions were performed on the phylogeny using probabilistic approaches implemented in BioGeoBEARS. We detected high levels of genetic differentiation yielding ten distinct lineages or operational taxonomic units, and Central Africa was found to be a diversity hotspot for these frogs. Most speciation events took place throughout the Miocene, including "out-of-Africa" overseas dispersal events to Madagascar in the East and to São Tomé in the West. Bioclimatic niche was remarkably well conserved, with most species tolerating similar temperature and rainfall conditions common to the Central African region. The P. mascareniensis complex provides insights into how bioclimatic niche shaped the current biogeographic patterns with niche conservatism being exhibited by the Central African radiation and niche divergence shaping populations in West Africa and Madagascar. Central Africa, including the Albertine Rift region, has been an important center of diversification for this species complex.
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- $a Dash, Katrina M $u Department of Biological Sciences, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA; Department of Biology, Tidewater Community College, 120 Campus Dr., Portsmouth, VA 23701, USA. Electronic address: kmweber@miners.utep.edu.
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- $a Dehling, J Maximilian $u Institute of Integrated Sciences, Department of Biology, University of Koblenz-Landau, Universitätsstraße 1, 56070 Koblenz, Germany. Electronic address: dehling@uni-koblenz.de.
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