Abstract
In order to understand the processes that generate and maintain diversity, it is important to disentangle the roles of ecology and geography in speciation. We investigated the biogeographical and ecological factors that influenced the diversification of tree frogs (genus Sarcohyla) in the Mexican highlands, a region with high levels of endemism. Using single nucleotide polymorphism data for 58 samples, we found support for seven distinct genetic clusters within the Sarcohyla bistincta species complex, corresponding to Sarcohyla calthula, Sarcohyla pentheter and five populations within S. bistincta. A species tree analysis using the multispecies coalescent model did not support the monophyly of the five S. bistincta populations. We used niche modelling to calculate the ecological overlap among lineages; we found a degree of overlapping for most of the lineages, suggesting that ecological differentiation did not play a key role in their genetic divergence. Speciation and population structure in the complex have been shaped primarily by geological events, landscape modifications and climate changes during the Pleistocene. We discuss the relevance of genetic diversity for inferring the degree of species threats and recovery for conservation assessments.
| Original language | English |
|---|---|
| Pages (from-to) | 767-781 |
| Number of pages | 15 |
| Journal | Biological Journal of the Linnean Society |
| Volume | 123 |
| Issue number | 4 |
| Early online date | 28 Feb 2018 |
| DOIs | |
| Publication status | Published - Apr 2018 |
| Externally published | Yes |
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Keywords
- Divergence
- Hylidae
- Niche modelling
- Phylogeography
- Population structure
- Sarcohyla
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Leapfrogging the Mexican highlands : Influence of biogeographical and ecological factors on the diversification of highland species. / CAVIEDES SOLIS, Itzue W.; Leaché, Adam D.
In: Biological Journal of the Linnean Society, Vol. 123, No. 4, 04.2018, p. 767-781.Research output: Journal Publications › Journal Article (refereed)
TY - JOUR
T1 - Leapfrogging the Mexican highlands : Influence of biogeographical and ecological factors on the diversification of highland species
AU - CAVIEDES SOLIS, Itzue W.
AU - Leaché, Adam D.
PY - 2018/4
Y1 - 2018/4
N2 - In order to understand the processes that generate and maintain diversity, it is important to disentangle the roles of ecology and geography in speciation. We investigated the biogeographical and ecological factors that influenced the diversification of tree frogs (genus Sarcohyla) in the Mexican highlands, a region with high levels of endemism. Using single nucleotide polymorphism data for 58 samples, we found support for seven distinct genetic clusters within the Sarcohyla bistincta species complex, corresponding to Sarcohyla calthula, Sarcohyla pentheter and five populations within S. bistincta. A species tree analysis using the multispecies coalescent model did not support the monophyly of the five S. bistincta populations. We used niche modelling to calculate the ecological overlap among lineages; we found a degree of overlapping for most of the lineages, suggesting that ecological differentiation did not play a key role in their genetic divergence. Speciation and population structure in the complex have been shaped primarily by geological events, landscape modifications and climate changes during the Pleistocene. We discuss the relevance of genetic diversity for inferring the degree of species threats and recovery for conservation assessments.
AB - In order to understand the processes that generate and maintain diversity, it is important to disentangle the roles of ecology and geography in speciation. We investigated the biogeographical and ecological factors that influenced the diversification of tree frogs (genus Sarcohyla) in the Mexican highlands, a region with high levels of endemism. Using single nucleotide polymorphism data for 58 samples, we found support for seven distinct genetic clusters within the Sarcohyla bistincta species complex, corresponding to Sarcohyla calthula, Sarcohyla pentheter and five populations within S. bistincta. A species tree analysis using the multispecies coalescent model did not support the monophyly of the five S. bistincta populations. We used niche modelling to calculate the ecological overlap among lineages; we found a degree of overlapping for most of the lineages, suggesting that ecological differentiation did not play a key role in their genetic divergence. Speciation and population structure in the complex have been shaped primarily by geological events, landscape modifications and climate changes during the Pleistocene. We discuss the relevance of genetic diversity for inferring the degree of species threats and recovery for conservation assessments.
KW - Divergence
KW - Hylidae
KW - Niche modelling
KW - Phylogeography
KW - Population structure
KW - Sarcohyla
UR - http://www.scopus.com/inward/record.url?scp=85045451806&partnerID=8YFLogxK
U2 - 10.1093/biolinnean/bly002
DO - 10.1093/biolinnean/bly002
M3 - Journal Article (refereed)
AN - SCOPUS:85045451806
VL - 123
SP - 767
EP - 781
JO - Biological Journal of the Linnean Society
JF - Biological Journal of the Linnean Society
SN - 0024-4066
IS - 4
ER -