Dinis, M. et al. (2019) Allopatric diversification and evolutionary melting pot in a North African Palearctic relict: the biogeographic history of Salamandra algira. Molecular Phylogenetics and Evolution, 130, pp. 81-91. (doi: 10.1016/j.ympev.2018.10.018) (PMID:30321698)
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Abstract
North Africa is a climatically and topographically complex region with unique biotic assemblages resulting from the combination of multiple biogeographic realms. Here, we assess the role of climate in promoting intra-specific diversification in a Palearctic relict, the North African fire salamander, Salamandra algira, using a combination of phylogenetic and population genetic analyses, paleoclimatic modelling and niche overlap tests. We used mitochondrial DNA (Cyt-b), 9838 ddRADseq loci, and 14 microsatellite loci to characterize patterns of genetic diversity and population structure. Phylogenetic analyses recover two major clades, each including several lineages with mito-nuclear discordances suggesting introgressive patterns between lineages in the Middle Atlas, associated with a melting pot of genetic diversity. Paleoclimatic modelling identified putative climatic refugia, largely matching areas of high genetic diversity, and supports the role of aridity in promoting allopatric diversification associated with ecological niche conservatism. Overall, our results highlight the role of climatic microrefugia as drivers of populations’ persistence and diversification in the face of climatic oscillations in North Africa, and stress the importance of accounting for different genomic regions when reconstructing biogeographic processes from molecular markers.
| Item Type: | Articles |
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| Additional Information: | This work was funded by FEDER funds through the Operational Programme for Competitiveness Factors – COMPETE, by National Funds through FCT – Foundation for Science and Technology under the PTDC/BIA-EVF/3036/2012, PTDC/BIA-EVL/28475/2017 and FCOMP-01-0124-FEDER-028325, and a grant from Instituto de Estudios Ceutíes (IEC 2015) to GVA, by the Moroccan-German Program for Scientific Research [PMARS II N °: MA 12/07], by the Hassan II Academy of Sciences and Technics - Morocco (ICGVSA project) and by a Natural Environment Research Council PhD studentship NE/L501918/1 to JB with KRE. GV-A and FM-F are supported by FCT (IF/01425/2014 and SFRH/BPD/109119/2015, respectively). UJ, MV and TS were supported by German Science Ministry (BMBF: 01DH13015). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Elmer, Professor Kathryn and Burgon, James |
| Authors: | Dinis, M., Merabet, K., Martínez-Freiría, F., Steinfartz, S., Vences, M., Burgon, J. D., Elmer, K. R., Donaire, D., Hinckley, A., Fahd, S., Joger, U., Fawzi, A., Slimani, T., and Velo-Antón, G. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine |
| Journal Name: | Molecular Phylogenetics and Evolution |
| Publisher: | Elsevier |
| ISSN: | 1055-7903 |
| ISSN (Online): | 1095-9513 |
| Published Online: | 12 October 2018 |
| Copyright Holders: | Copyright © 2018 The Authors |
| First Published: | First published in Molecular Phylogenetics and Evolution 130: 81-91 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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