The discordance of diversification: evolution in the tropical‐montane frogs of the Eastern Arc Mountains of Tanzania
- Lucinda P. Lawson
- Environmental Science, BiologyMolecular Ecology
- 1 September 2010
Results from these analyses show three lineages of Hyperolius frogs with concordant ranges within the Eastern Afromontane Biodiversity Hotspot to have independent evolutionary histories, which current spatial configurations of sparsely available habitat have moulded into convergent geographical ranges.
THE EVOLUTIONARY HISTORY OF DARWIN'S FINCHES: SPECIATION, GENE FLOW, AND INTROGRESSION IN A FRAGMENTED LANDSCAPE
- H. Farrington, Lucinda P. Lawson, Courtney M Clark, K. Petren
- Biology, Environmental ScienceEvolution; international journal of organic…
- 1 October 2014
A landscape perspective highlights a likely role for isolation of peripheral populations in initial divergence, and demonstrates that peripheral populations may maintain genetic diversity through outbreeding during the initial stages of speciation.
Diversification in a biodiversity hot spot: landscape correlates of phylogeographic patterns in the African spotted reed frog
- Lucinda P. Lawson
- Environmental ScienceMolecular Ecology
- 1 April 2013
This work investigates how characteristics of landscape heterogeneity including regional distributions of slope, rivers and streams, habitat and hydrological basins (drainages) impact genetic distance among populations of the endemic spotted reed frog (Hyperolius substriatus), identifying corridors of connectivity as well as barriers to dispersal.
STRONG SELECTION AGAINST HYBRIDS AT A HYBRID ZONE IN THE ENSATINA RING SPECIES COMPLEX AND ITS EVOLUTIONARY IMPLICATIONS
- J. Alexandrino, S. Baird, Lucinda P. Lawson, J. Macey, C. Moritz, D. Wake
- Biology
- 22 April 2005
The evidence for strong but incomplete isolation across this centrally located contact is consistent with theory suggesting a gradual increase in postzygotic incompatibility between allopatric populations subject to divergent selection and reinforces the value of Ensatina as a system for the study of divergence and speciation at multiple stages.
Male reproductive fitness and queen polyandry are linked to variation in the supergene Gp-9 in the fire ant Solenopsis invicta
- Lucinda P. Lawson, R. V. Vander Meer, D. Shoemaker
- BiologyProceedings of the Royal Society B: Biological…
- 22 August 2012
It is shown that both male reproductive success and facultative polyandry in queens have a simple genetic basis and are dependent on male Gp-9 genotype, and how strong worker-induced selection acting to maintain the G p-9b allele in the polygyne social form may simultaneously result in reduced reproductive fitness for individual sexual offspring.
Terrestrialization, Miniaturization and Rates of Diversification in African Puddle Frogs (Anura: Phrynobatrachidae)
- Breda M Zimkus, Lucinda P. Lawson, S. Loader, J. Hanken
- BiologyPLoS ONE
- 10 April 2012
Though terrestrialization and miniaturization in sub-Saharan puddle frogs (Phrynobatrachidae) do not seem to be associated with increased speciation rates, they may still provide opportunities to extend into new niches, thus increasing overall diversity.
The adaptive genomic landscape of beak morphology in Darwin's finches
- Lucinda P. Lawson, K. Petren
- BiologyMolecular Ecology
- 1 October 2017
The adaptive genomic landscape for Darwin's finches mirrors theoretical expectations based on morphological variation and the implication that a large number of genes are actively maintained to facilitate beak variation across parallel populations with documented interspecies admixture challenges the understanding of evolutionary processes in the wild.
Slow motion extinction: inbreeding, introgression, and loss in the critically endangered mangrove finch (Camarhynchus heliobates)
- Lucinda P. Lawson, B. Fessl, K. Petren
- Biology, Environmental ScienceConservation Genetics
- 1 February 2017
Current genetic diversity of the last remnant population is far below levels 100 years ago, with only about half of the allelic diversity retained, and current genetic diversity is close to levels in the Fernandina population that went extinct by the 1970s.
STRONG SELECTION AGAINST HYBRIDS AT A HYBRID ZONE IN THE ENSATINA RING SPECIES COMPLEX AND ITS EVOLUTINARY IMPLICATIONS
- J. Alexandrino, S. Baird, Lucinda P. Lawson, J. Macey, C. Moritz, D. Wake
- BiologyEvolution; international journal of organic…
- 1 June 2005
The evidence for strong but incomplete isolation across this centrally located contact is consistent with theory suggesting a gradual increase in postzygotic incompatibility between allopatric populations subject to divergent selection and reinforces the value of Ensatina as a system for the study of divergence and speciation at multiple stages.
Sexual Dichromatism Drives Diversification within a Major Radiation of African Amphibians.
- D. Portik, R. Bell, J. McGuire
- BiologySystematic Biology
- 1 November 2019
It is proposed that reed frogs are a compelling system for studying the roles of natural and sexual selection on the evolution of sexual dichromatism across micro- and macroevolutionary timescales.
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