Sánchez-Montes, G;
Wang, J;
Ariño, AH;
Martínez-Solano, I;
(2018)
Mountains as barriers to gene flow in amphibians: Quantifying the differential effect of a major mountain ridge on the genetic structure of four sympatric species with different life history traits.
Journal of Biogeography
, 45
(2)
pp. 318-331.
10.1111/jbi.13132.
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Abstract
AIM: To test the role of mountains as barriers to gene flow in co-distributed taxa with different life history traits. LOCATION: Sierra de Guadarrama, Central Spain. METHODS: We used larval genotypes of four amphibian species (Epidalea calamita, Hyla molleri, Pelophylax perezi and Pelobates cultripes) sampled on northern and southern slopes of Sierra de Guadarrama to describe genetic structure with FST, migration rates per generation, clustering algorithms and resistance by elevation surfaces. We also recorded individual displacement events as a proxy of dispersal potential during a seven-year monitoring project based on capture–mark–recapture (CMR). RESULTS: All species travelled longer cumulative distances than those reported in the study area for P. cultripes (0.71 km). Individuals of E. calamita travelled up to 3.55 km, followed by H. molleri (2.84 km) and P. perezi (1.51 km). Pairwise FST estimates showed lower overall connectivity in P. cultripes. Average migration rates per generation were low in all species, with exceptions in same-slope populations of H. molleri and P. cultripes. Clustering algorithms consistently recovered well-differentiated population groups of P. cultripes in northern versus southern slopes, but widely admixed areas were observed in the other species, especially near mountain passes. Resistance by elevation surfaces showed a strong barrier effect of Sierra de Guadarrama in P. cultripes and suggested a potential role of topography in the genetic structure of E. calamita and H. molleri. MAIN CONCLUSIONS: Sierra de Guadarrama currently acts as a strong barrier to gene flow for P. cultripes and, to a lesser extent, for E. calamita, H. molleri and P. perezi. This differential effect can be partly explained by differences in life history traits, including dispersal potential. Our findings support the general role of the Central System as a key feature shaping population connectivity and genetic variation in amphibian communities.
| Type: | Article |
|---|---|
| Title: | Mountains as barriers to gene flow in amphibians: Quantifying the differential effect of a major mountain ridge on the genetic structure of four sympatric species with different life history traits |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/jbi.13132 |
| Publisher version: | http://dx.doi.org/10.1111/jbi.13132 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | connectivity; dispersal; genetic clustering; isolation by distance; landscape genetics; migration rates per generation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10044105 |
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