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Genetic variation across species’ geographical ranges: the central–marginal hypothesis and beyond
TLDR
Despite the large number of studies testing these simple predictions, very few attempted to test possible mechanisms causing reduced peripheral diversity or increased differentiation, which is likely to influence the adaptive potential of populations across the geographical range. Expand
Ridges and rivers: a test of competing hypotheses of Amazonian diversification using a dart-poison frog (Epipedobates femoralis)
TLDR
Mitochondrial DNA cytochrome b sequence data from a dart–poison frog were used to test two hypotheses of Amazonian diversification: the riverine barrier and the ridge hypotheses, and results were consistent with the hypothesis that ancient ridges (arches) have shaped the phylogeographic relationships of Amazonians. Expand
Discordant temporal and geographic patterns in maternal lineages of eastern North American frogs, Rana catesbeiana (Ranidae) and Pseudacris crucifer (Hylidae).
TLDR
Large-scale phylogeographic comparisons between these and other eastern North American species reflect both congruent and independent patterns of diversification, possibly reflecting the relative importance of dispersal ability and habitat associations. Expand
Measurement Error and Morphometric Studies: Statistical Power and Observer Experience
TLDR
It is shown how averaging repeated measurements changes the minimum detectable effect size between groups when both ME and sample size vary, and the pattern of character- specific measurement error is consistent across passerine species. Expand
Cryptic lineages in a small frog: the post-glacial history of the spring peeper, Pseudacris crucifer (Anura: Hylidae).
TLDR
The spring peeper (Pseudacris crucifer) is believed to have been a primary herpetological invader of eastern North America following the most recent period of glacial retreat, and whether the distribution of haplotypic variants reflect post-Pleistocene recolonization dynamics is examined. Expand
Riverine barriers and the geographic distribution of Amazonian species.
TLDR
Analysis of the phylogeography of frogs and small mammals indicates that a putative riverine barrier (the Juruá River) does not relate to present-day patterns of community similarity and species richness, and implies a significant impact of the Andean orogenic axis and associated thrust-and-fold lowland dynamics in shaping patterns of biotic diversity along the Juruán. Expand
Range-wide phylogeography of a temperate lizard, the five-lined skink (Eumeces fasciatus).
TLDR
Analysis of population structure using nuclear microsatellite data within the five-lined skink suggests the importance of glacial dynamics in shaping more recent genetic structuring within one widely distributed lineage that ranges from the Mississippi River to the Atlantic Ocean in longitude and from southern Ontario to the Gulf of Mexico in latitude. Expand
Multi-character perspectives on the evolution of intraspecific differentiation in a neotropical hylid frog
TLDR
This work examines the relationship among patterns of variation in morphology, call characters, and 16S gene sequences across seven populations of a neotropical hylid frog, Hyla leucophyllata, to infer their relative importance in predicting the early stages of population differentiation. Expand
Phylogenetics, zoogeography, and the role of dispersal and vicariance in the evolution of the Rana catesbeiana (Anura: Ranidae) species group
TLDR
Dispersal–vicariance analysis suggested a Coastal Plain biogeographical region origin of the Rana catesbeiana species group, supporting the notion that the region was an important centre of anuran diversification, with post-speciation dispersal playing a major role in explaining the distribution of the widespread species. Expand
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