Leapfrogging the Mexican highlands : Influence of biogeographical and ecological factors on the diversification of highland species

Itzue W. CAVIEDES SOLIS*, Adam D. Leaché

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)

2 Citations (Scopus)

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 languageEnglish
Pages (from-to)767-781
Number of pages15
JournalBiological Journal of the Linnean Society
Volume123
Issue number4
Early online date28 Feb 2018
DOIs
Publication statusPublished - Apr 2018
Externally publishedYes

Fingerprint

highlands
genetic variation
Hylidae
endemism
species complex
geography
frog
monophyly
single nucleotide polymorphism
population structure
niche
polymorphism
niches
indigenous species
divergence
climate change
Pleistocene
ecology
modeling
sampling

Keywords

  • Divergence
  • Hylidae
  • Niche modelling
  • Phylogeography
  • Population structure
  • Sarcohyla

Cite this

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title = "Leapfrogging the Mexican highlands : Influence of biogeographical and ecological factors on the diversification of highland species",
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.",
keywords = "Divergence, Hylidae, Niche modelling, Phylogeography, Population structure, Sarcohyla",
author = "{CAVIEDES SOLIS}, {Itzue W.} and Leach{\'e}, {Adam D.}",
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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 PublicationsJournal Article (refereed)

TY - JOUR

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