+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Cryptic Neogene vicariance and Quaternary dispersal of the red-spotted toad (Bufo punctatus): insights on the evolution of North American warm desert biotas

, : Cryptic Neogene vicariance and Quaternary dispersal of the red-spotted toad (Bufo punctatus): insights on the evolution of North American warm desert biotas. Molecular Ecology 14(10): 3033-3048

We define the geographical distributions of mitochondrial DNA (mtDNA) lineages embedded within a broadly distributed, arid-dwelling toad, Bufo punctatus. These patterns were evaluated as they relate to hypothesized vicariant events leading to the formation of desert biotas within western North America. We assessed mtDNA sequence variation among 191 samples from 82 sites located throughout much of the species' range. Parsimony-based haplotype networks of major identified lineages were used in nested clade analysis (NCA) to further elucidate and evaluate shallow phylogeographic patterns potentially associated with Quaternary (Pleistocene-Holocene) vicariance and dispersal. Phylogenetic analyses provided strong support for three monophyletic lineages (clades) within B. punctatus. The geographical distributions of the clades showed little overlap and corresponded to the general boundaries of the Peninsular Desert, and two continental desert regions, Eastern (Chihuahuan Desert-Colorado Plateau) and Western (Mojave-Sonoran deserts), geographically separated along the Rocky Mountains and Sierra Madre Occidental. The observed divergence levels and congruence with postulated events in earth history implicate a late Neogene (latest Miocene-early Pliocene) time frame for separation of the major mtDNA lineages. Evaluation of nucleotide and haplotype diversity and interpretations from NCA reveal that populations on the Colorado Plateau resulted from a recent, likely post-Pleistocene, range expansion from the Chihuahuan Desert. Dispersal across historical barriers separating major continental clades appear to be recent, resulting in secondary contacts in at least two areas. Given the observed contact between major clades, we speculated as to why the observed deep phylogeographic structure has not been eroded during the multiple previous interglacials of the Pleistocene.


PMID: 16101772

DOI: 10.1111/j.1365-294X.2005.02645.x

Other references

Mazzoni, M.; Moretti, P.; Lucchini, C.; Vista, M.; Muratorio, A., 1991: Category-specific semantic disorders in Alzheimer's disease. A striking dissociation between the inability to identify living things plus food, along with a preserved ability to identify inanimate objects has been observed in patients who are recovering from herpes simplex encephalitis. In order to find out...

DiDonato, T.E.; Jakubiak, B.K., 2016: Strategically Funny: Romantic Motives Affect Humor Style in Relationship Initiation. Not all humor is the same, yet little is known about the appeal of specific humor styles in romantic initiation. The current experimental study addresses this gap by investigating how romantic motives (short-term or long-term) affect individuals&a...

Goss, D.A.; Lockwood, R.Minturn.; Rogers, G.Adelmer., 2014: Robert M. Lockwood and George A. Rogers, early twentieth century optometry authors. A significant factor in the continuing development and maturation of professional optometry in the early twentieth century was book and journal literature. Some of the prominent optometric writers of that era do not seem to be remembered today. Tw...

Mallek, N.K.; Webster, J.L.S.; Szewczuk, M.R., 1995: Apoptosis and cell death in human erythroleukemic K562 cell line induced by tumor necrosis factor-alpha priming and exposure to electromagnetic fields. 9TH INTERNATIONAL CONGRESS OF IMMUNOLOGY [Author] The 9th International Congress of Immunology : 743

Donald, J., 1902: On some of the Proterozoic Gasteropoda which have been referred to Murchisonia and Pleurotomaria, with, descriptions of new Subgenera and Species. Quarterly Journal of the Geological Society, lviii 313-338

Efanov, A.M.; Barrett, D.G.; Brenner, M.B.; Briggs, S.L.; Delaunois, A.; Durbin, J.D.; Giese, U.; Guo, H.; Radloff, M.; Gil, G.Sanz.; Sewing, S.; Wang, Y.; Weichert, A.; Zaliani, A.; Gromada, J., 2005: A novel glucokinase activator modulates pancreatic islet and hepatocyte function. The glucose-sensing enzyme glucokinase (GK) plays a key role in glucose metabolism. We report here the effects of a novel glucokinase activator, LY2121260. The activator enhanced GK activity via binding to the allosteric site located in the hinge...

Wongpichedchai, S.; Hansen, R.M.; Koka, B.; Gudas, V.M.; Fulton, A.B., 1992: Effects of halothane on children's electroretinograms. Background: At times, anesthesia is necessary to test children's electroretinographic (ERG) responses. Halothane, an anesthetic commonly used for pediatric patients, affects some aspects of ERG responses, but it is unknown if halothane affect...

Schreml W.; Bremer K., 1973: Studies on the in vivo nucleic acid metabolism of chronic lymphocytic leukemia after in vitro labeling with tritiated cytidine. European Journal of Clinical Investigation 3(3): 267-268

Bajaj Y.P.S.; Singh H., 1980: In vitro induction of androgenesis in mung bean phaseolus aureus. Indian Journal of Experimental Biology 18(11): 1316-1318

Engen, S., 1992: Sexual mixing models: a comparison of analogue deterministic and stochastic models. Models for sexual partner choice are discussed for the case of highly variable sexual activity in the population. It is demonstrated that the variances in the number of infected persons may be extremely large. For the random mixing model, higher o...