Discordant temporal and geographic patterns in maternal lineages of eastern North American frogs, Rana catesbeiana (Ranidae) and Pseudacris crucifer (Hylidae).
- J. D. Austin, S. Lougheed, P. Boag
- BiologyMolecular Phylogenetics and Evolution
- 1 September 2004
An ancient icon reveals new mysteries: mummy DNA resurrects a cryptic species within the Nile crocodile.
- E. Hekkala, M. H. Shirley, M. Blum
- BiologyMolecular Ecology
- 1 October 2011
A cryptic evolutionary lineage within the Nile crocodile is revealed that elucidates the biogeographic history of the genus and clarifies long-standing arguments over the species' taxonomic identity and conservation status.
Cryptic lineages in a small frog: the post-glacial history of the spring peeper, Pseudacris crucifer (Anura: Hylidae).
- J. D. Austin, S. Lougheed, Lindsay Neidrauer, A. A. Chek, P. Boag
- BiologyMolecular Phylogenetics and Evolution
- 1 October 2002
Rigorous approaches to species delimitation have significant implications for African crocodilian systematics and conservation
- M. H. Shirley, K. Vliet, Amanda N. Carr, J. D. Austin
- Environmental Science, BiologyProceedings of the Royal Society B: Biological…
- 7 February 2014
The hypothesis that the slender-snouted crocodile (Mecistops cataphractus) is composed of multiple species corresponding to the Congolian and Guinean biogeographic zones is tested and underscores the necessity of comprehensive phylogeographic analyses within currently recognized taxa to detect cryptic species within the Crocodylia.
Phylogenetics, zoogeography, and the role of dispersal and vicariance in the evolution of the Rana catesbeiana (Anura: Ranidae) species group
- J. D. Austin, S. Lougheed, P. Moler, P. Boag
- Biology
- 1 December 2003
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.
Genetic estimates of contemporary effective population size in an endangered butterfly indicate a possible role for genetic compensation
- Emily V. Saarinen, J. D. Austin, J. Daniels
- Environmental Science, BiologyEvolutionary Applications
- 10 August 2009
It appears that the lack of gene flow between distant populations may be a greater genetic threat in the short term than the loss of heterozygosity due to inbreeding, and Ne/N ratios based on census point counts were high.
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.
Controlling for the Effects of History and Nonequilibrium Conditions in Gene Flow Estimates in Northern Bullfrog (Rana catesbeiana) Populations
- J. D. Austin, S. Lougheed, P. Boag
- BiologyGenetics
- 1 November 2004
The scale at which gene flow can be estimated among breeding aggregations of bullfrogs at the northern limit of their range in Ontario, Canada, is determined using seven highly polymorphic DNA microsatellite loci and it is shown that, in many cases,breeding aggregations separated by up to tens of kilometers are not genetically distinct enough to be considered separate genetic populations.
Range-wide population structure and history of the northern quahog (Merceneria merceneria) inferred from mitochondrial DNA sequence data
- P. Baker, J. D. Austin, B. Bowen, S. Baker
- Environmental Science
- 1 March 2008
The thesis that the Gulf of Mexico population is the product of a recent introduction ofMercenaria mercenaria stocks in the Atlantic is supported, though this does not preclude regional adaptive differences between northern, central, and southern populations.
Morphological and molecular evidence indicates that the Gulf Coast box turtle (Terrapene carolina major) is not a distinct evolutionary lineage in the Florida Panhandle
- J. Butler, C. K. Dodd, M. Aresco, J. D. Austin
- Biology
- 1 April 2011
The results of the present study confirm that box turtles phenotypically diagnosed as T. c.
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