The relative roles of vicariance versus elevational gradients in the genetic differentiation of the high Andean tree frog, Dendropsophus labialis

Guarnizo, Carlos E.; Amézquita, Adolfo; Bermingham, Eldredge

doi:10.1016/j.ympev.2008.10.005

Cited by 54 publications

(51 citation statements)

References 69 publications

(68 reference statements)

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“…It is likely that mountains of Eastern Cuba, the largest mountain range in the country, promoted the diversification not only by tectonic uplifts but also acting as elevational refugia in periods of unsuitable climate when ecological niches got reduced geographically. Diversification in mountain refugia, either allopatric by populations remaining isolated on different mountains, or parapatric along elevational ecotones, has been proposed as the prevalent mechanism for other groups of frogs (e.g., Guarnizo et al, 2009;Wollenberg et al, 2008). Within the Antillean context, there is compelling evidence that during the Pleistocene, the alternate exposure and submergence of land, and the correlated alternation of xeric and mesic environments, would have resulted in repeated events of faunal isolation, speciation, and extinction such that relict distributions would be superimposed one on another as a mosaic through time (Curtis et al, 2001;Pregill and Olson, 1981).…”

Section: Discussionmentioning

confidence: 99%

Biogeographic origin and radiation of Cuban Eleutherodactylus frogs of the auriculatus species group, inferred from mitochondrial and nuclear gene sequences

Rodríguez

Vences

Nevado

et al. 2010

Molecular Phylogenetics and Evolution

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Section: Discussionmentioning

confidence: 99%

Biogeographic origin and radiation of Cuban Eleutherodactylus frogs of the auriculatus species group, inferred from mitochondrial and nuclear gene sequences

Rodríguez

Vences

Nevado

et al. 2010

Molecular Phylogenetics and Evolution

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“…That is, the pattern of IBD [7], [13], [14], [15], [16] and barrier effect [17], [18], [19], [20], [21] are evident for geographic variation of genetic diversity in most amphibian species studied. Although the results of genetic variation using seemingly neutral molecular markers (mostly mitochondrial and microsatellite DNAs) are valuable for understanding patterns of genetic structure and phylogeography among populations in a species, findings of these results may not be directly extrapolated to traits that are regularly and strongly subject to selection.…”

Section: Introductionmentioning

confidence: 95%

Geographic Variation in Advertisement Calls in a Tree Frog Species: Gene Flow and Selection Hypotheses

et al. 2011

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BackgroundIn a species with a large distribution relative to its dispersal capacity, geographic variation in traits may be explained by gene flow, selection, or the combined effects of both. Studies of genetic diversity using neutral molecular markers show that patterns of isolation by distance (IBD) or barrier effect may be evident for geographic variation at the molecular level in amphibian species. However, selective factors such as habitat, predator, or interspecific interactions may be critical for geographic variation in sexual traits. We studied geographic variation in advertisement calls in the tree frog Hyla japonica to understand patterns of variation in these traits across Korea and provide clues about the underlying forces for variation.MethodologyWe recorded calls of H. japonica in three breeding seasons from 17 localities including localities in remote Jeju Island. Call characters analyzed were note repetition rate (NRR), note duration (ND), and dominant frequency (DF), along with snout-to-vent length.ResultsThe findings of a barrier effect on DF and a longitudinal variation in NRR seemed to suggest that an open sea between the mainland and Jeju Island and mountain ranges dominated by the north-south Taebaek Mountains were related to geographic variation in call characters. Furthermore, there was a pattern of IBD in mitochondrial DNA sequences. However, no comparable pattern of IBD was found between geographic distance and call characters. We also failed to detect any effects of habitat or interspecific interaction on call characters.ConclusionsGeographic variations in call characters as well as mitochondrial DNA sequences were largely stratified by geographic factors such as distance and barriers in Korean populations of H. japoinca. Although we did not detect effects of habitat or interspecific interaction, some other selective factors such as sexual selection might still be operating on call characters in conjunction with restricted gene flow.

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“…Allopatric speciation events through the development of geographic barriers such as valleys, play an important role in explaining the high species diversity in the Andes [28–31]. In those montane forests many species occupy special habitats which are confined to narrow altitudinal ranges and often have very limited spatial extensions.…”

Section: Introductionmentioning

confidence: 99%

Limited Dispersal and Significant Fine - Scale Genetic Structure in a Tropical Montane Parrot Species

et al. 2016

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Tropical montane ecosystems are biodiversity hotspots harbouring many endemics that are confined to specific habitat types within narrow altitudinal ranges. While deforestation put these ecosystems under threat, we still lack knowledge about how heterogeneous environments like the montane tropics promote population connectivity and persistence. We investigated the fine-scale genetic structure of the two largest subpopulations of the endangered El Oro parakeet (Pyrrhura orcesi) endemic to the Ecuadorian Andes. Specifically, we assessed the genetic divergence between three sites separated by small geographic distances but characterized by a heterogeneous habitat structure. Although geographical distances between sites are small (3–17 km), we found genetic differentiation between all sites. Even though dispersal capacity is generally high in parrots, our findings indicate that dispersal is limited even on this small geographic scale. Individual genotype assignment revealed similar genetic divergence across a valley (~ 3 km distance) compared to a continuous mountain range (~ 13 km distance). Our findings suggest that geographic barriers promote genetic divergence even on small spatial scales in this endangered endemic species. These results may have important implications for many other threatened and endemic species, particularly given the upslope shift of species predicted from climate change.

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The relative roles of vicariance versus elevational gradients in the genetic differentiation of the high Andean tree frog, Dendropsophus labialis

Cited by 54 publications

References 69 publications

Biogeographic origin and radiation of Cuban Eleutherodactylus frogs of the auriculatus species group, inferred from mitochondrial and nuclear gene sequences

Biogeographic origin and radiation of Cuban Eleutherodactylus frogs of the auriculatus species group, inferred from mitochondrial and nuclear gene sequences

Geographic Variation in Advertisement Calls in a Tree Frog Species: Gene Flow and Selection Hypotheses

Limited Dispersal and Significant Fine - Scale Genetic Structure in a Tropical Montane Parrot Species

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