Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Richard Highton"'
Publikováno v:
PLoS ONE, Vol 11, Iss 3, p e0150022 (2016)
Species are a fundamental unit of biodiversity, yet can be challenging to delimit objectively. This is particularly true of species complexes characterized by high levels of population genetic structure, hybridization between genetic groups, isolatio
Externí odkaz:
https://doaj.org/article/acee8d79c7734a1aabb119358279a387
Publikováno v:
Zoologica Scripta. 47:285-299
Autor:
Richard Highton
Publikováno v:
Smithsonian Herpetological Information Service. :1-13
Publikováno v:
Journal of Biogeography. 43:639-652
Aim The river drainages of the Appalachian Mountains have experienced a dynamic history as glacial cycles, stream capture and other geological processes have led to the fragmentation and fusion of formerly isolated palaeodrainages. Some ancient river
Publikováno v:
Journal of Herpetology. 38:96-105
The Shenandoah Salamander (Plethodon shenandoah), known from isolated talus slopes on three of the highest mountains in Shenandoah National Park, is listed as state-endangered in Virginia and federally endangered under the U.S. Endangered Species Act
Publikováno v:
Herpetologica. 58:270-275
A reanalysis of our allozyme data (Dowling et al., 1996) for four slowly-evolving loci in 215 species of snakes by Buckley et al. (2000) concluded that because of ties in genetic distances our published UPGMA tree had "little resolution, indicating t
Publikováno v:
Journal of Zoology. 240:1-28
We present an initial evaluation of relationships among a diverse sample of 215 species of snakes (8% of the world snake fauna) representing nine of the 16 commonly-recognized families. Allelic variation at four slow-evolving. protein-coding loci, de
Autor:
Richard Highton
Publikováno v:
Annual Review of Ecology and Systematics. 26:579-600
Studies on allozyme variation in eastern plethodontid salamanders of the woodland genus Plethodon have revealed a large number of cryptic species. Genetic variation within and among species reveals patterns of speciation. In the late Miocene and earl
Autor:
Richard A. Watts, Stevan J. Arnold, Richard Highton, Melanie Culver, Amy Picard Hastings, Carla Ann Hass, Catherine A. Palmer
Publikováno v:
Molecular phylogenetics and evolution. 63(2)
Salamanders of the North American plethodontid genus Plethodon are important model organisms in a variety of studies that depend on a phylogenetic framework (e.g., chemical communication, ecological competition, life histories, hybridization, and spe
Autor:
Ronald G. Gregg, Catherine A. Palmer, Stevan J. Arnold, Richard Highton, Maureen A. McCall, Richard A. Watts, Lynne D. Houck
Publikováno v:
Molecular biology and evolution. 22(11)
Functionally equivalent genes may evolve heterogeneously across closely related taxa as a consequence of lineage-specific selective pressures. Such disparate evolutionary modes are especially prevalent in genes that encode postcopulatory reproductive