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- Title
SYSTEMATICS OF ISOLATED POPULATIONS OF SHORT-TAILED SHREWS (SORICIDAE: BLARINA) IN TEXAS.
- Authors
Reilly, Susannah M.; Manning, Richard W.; Nice, Chris C.; Forstner, Michael R. J.
- Abstract
Two isolated and taxonomically unassigned populations of short-tailed shrews (Blarina) exist in Texas, 1 in the Lost Pines region including Bastrop County and 1 at Aransas National Wildlife Refuge on the Gulf Coast. Molecular and morphological methods were used to determine the systematic status of the 2 disjunct Texas populations. Multivariate analyses of size-influenced cranial measurements were unsuccessful in identifying specimens from these populations at the species level. Phylogenetic analyses of the mitochondrial cytochrome-b gene revealed that the samples from disjunct Texas populations form a monophyletic sister clade to B. hylophaga from Kansas and Nebraska; there is little divergence between the 2 Texas populations. Genetic divergence between Texas and Kansas-Nebraska B. hylophaga is comparable to taxonomically recognized east-west divisions within B. brevicauda and B. carolinensis. Therefore, the name Blarina hylophaga plumbea, which originally was applied to the Aransas County population, also should include the Bastrop County population.
- Subjects
TEXAS; SHREWS; ANIMAL populations; MULTIVARIATE analysis; CRANIOMETRY; CYTOCHROME b; ARANSAS National Wildlife Refuge (Tex.)
- Publication
Journal of Mammalogy, 2005, Vol 86, Issue 5, p887
- ISSN
0022-2372
- Publication type
Article
- DOI
10.1644/1545-1542(2005)86[887:SOIPOS]2.0.CO;2