TY - JOUR
T1 - Genetic and conservation status of a relictual population of the hispid cotton rat (Sigmodon hispidus eremicus)
AU - Bradley, Robert D.
AU - Lack, Justin B.
AU - Pfau, Russell S.
AU - Peppers, Lottie L.
AU - Henson, Dallas D.
AU - Stallings, Andrew O.
AU - Hoang, Christine N.
AU - Van Den Bussche, Ronald A.
PY - 2012/9
Y1 - 2012/9
N2 - DNA sequences from the mitochondrial cytochrome-b gene were examined in individuals of the hispid cotton rat (Sigmodon hispidus eremicus) collected from an isolated population in southwestern Arizona. Analyses indicated unique DNA substitutions and haplotypes that were restricted to the population in Arizona and an overall genetic affiliation to populations of the western lineage of S. hispidus, particularly to the population from Otero County, New Mexico. Estimates of time since divergence indicated an allopatric relationship with other populations of S. hispidus ≥150,000 years ago. Additionally, data obtained from analyses of amplified fragment-length polymorphisms indicated that S. h. eremicus exhibits lower genetic diversity compared to other populations. Together, these data along with detection of two replacements of apomorphic nonsynonymous amino acids and genetic divergence among amplified length polymorphisms argue that S. h. eremicus is unique from other populations of S. hispidus and that conservation considerations are encouraged.
AB - DNA sequences from the mitochondrial cytochrome-b gene were examined in individuals of the hispid cotton rat (Sigmodon hispidus eremicus) collected from an isolated population in southwestern Arizona. Analyses indicated unique DNA substitutions and haplotypes that were restricted to the population in Arizona and an overall genetic affiliation to populations of the western lineage of S. hispidus, particularly to the population from Otero County, New Mexico. Estimates of time since divergence indicated an allopatric relationship with other populations of S. hispidus ≥150,000 years ago. Additionally, data obtained from analyses of amplified fragment-length polymorphisms indicated that S. h. eremicus exhibits lower genetic diversity compared to other populations. Together, these data along with detection of two replacements of apomorphic nonsynonymous amino acids and genetic divergence among amplified length polymorphisms argue that S. h. eremicus is unique from other populations of S. hispidus and that conservation considerations are encouraged.
UR - http://www.scopus.com/inward/record.url?scp=84866411801&partnerID=8YFLogxK
U2 - 10.1894/0038-4909-57.3.231
DO - 10.1894/0038-4909-57.3.231
M3 - Article
AN - SCOPUS:84866411801
SN - 0038-4909
VL - 57
SP - 231
EP - 239
JO - Southwestern Naturalist
JF - Southwestern Naturalist
IS - 3
ER -