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Genetic variation across species’ geographical ranges: the central–marginal hypothesis and beyond
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.
Ridges and rivers: a test of competing hypotheses of Amazonian diversification using a dart-poison frog (Epipedobates femoralis)
- S. Lougheed, C. Gascon, D. Jones, J. Bogart, P. Boag
- BiologyProceedings of the Royal Society of London…
- 22 September 1999
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.
Discordant temporal and geographic patterns in maternal lineages of eastern North American frogs, Rana catesbeiana (Ranidae) and Pseudacris crucifer (Hylidae).
Measurement Error and Morphometric Studies: Statistical Power and Observer Experience
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.
Cryptic lineages in a small frog: the post-glacial history of the spring peeper, Pseudacris crucifer (Anura: Hylidae).
Riverine barriers and the geographic distribution of Amazonian species.
- C. Gascon, J. Malcolm, P. Boag
- Environmental ScienceProceedings of the National Academy of Sciences…
- 5 December 2000
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.
Mating signal partitioning in multi‐species assemblages: a null model test using frogs
Molecular phylogenetic evidence for the evolution of specialization in anemonefishes
- J. Elliott, S. Lougheed, B. Bateman, L. K. McPhee, P. Boag
- Biology, Environmental ScienceProceedings of the Royal Society of London…
- 7 April 1999
The initial anemonefish ancestors were probably host specialists and subsequent speciation events led to a combination of generalist and specialist groups, and three methods of phylogenetic analysis strongly supported the conclusion that anem onefishes are a monophyletic group.
Lateral Transfer of a Lectin-Like Antifreeze Protein Gene in Fishes
It is proposed that lateral gene transfer has resulted in the occurrence of the type II AFPs in herring, smelt and sea raven and allowed these species to survive in an otherwise lethal niche.
Multi-character perspectives on the evolution of intraspecific differentiation in a neotropical hylid frog
- S. Lougheed, J. D. Austin, J. Bogart, P. Boag, A. A. Chek
- BiologyBMC Evolutionary Biology
- 15 March 2006
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.