Molecular diversity within Melanomys caliginosus (Rodentia: Oryzomyini) : evidence for multiple species

Related Titles

Series: Occasional papers / Museum of Texas Tech University, no. 275

By

Hanson, J Delton

Bradley, Robert D.

Type

Book

Material

Published material

Publication info

Lubbock, TX, Museum of Texas Tech University, [2008]

Notes

Caption title.

"12 September 2008."

Nucleotide sequences from the mitochondrial DNA cytochrome-b gene were used to infer phylogenetic relationships and estimate genetic distances from 10 individuals of Melanomys caliginosus and to explore the hypothesis that this taxon is comprised of multiple species. Individuals of four geographic populations of M. caliginosus from Central America (Nicaragua and Costa Rica), Panama, Venezuela, and Ecuador, respectively, were included in this analysis. Topologies obtained from maximum parsimony and Bayesian inference analyses were identical and produced clades referable to each of the geographic populations. Genetic distances between any pair-wise comparisons of the four groups (except between Panamanian and Venezuelan samples) were comparable to values estimated from comparisons of sister species in the closely related genus Nectomys. Distances between samples from Panama and Venezuela were greater than those of samples within the Ecuadorian and Central American clades, but less than that between species of Nectomys. Based on results from the sequence data, it appears that all four of the populations should be elevated to species level; however, additional data are needed to resolve the nomenclature of the Panamanian and Venezuelan populations.

Subjects

Central America , Classification , Rodents , South America , Uromys

Call Number

QL1 .O213 no.275

Language

English

Identifiers

OCLC: 268786718
Wikidata: https://www.wikidata.org/entity/Q34999499