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CONSERVATION GENETICS OF THE SONOMA TREE VOLE (ARBORIMUS POMO) BASED ON MITOCHONDRIAL
 

Summary: CONSERVATION GENETICS OF THE SONOMA TREE VOLE
(ARBORIMUS POMO) BASED ON MITOCHONDRIAL
AND AMPLIFIED FRAGMENT LENGTH
POLYMORPHISM MARKERS
JESSICA L. BLOIS* AND BRIAN S. ARBOGAST
Department of Biological Sciences, Humboldt State University, 1 Harpst Street, Arcata, CA 95521, USA
Present address of JLB: Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA
We used a comparative, multimarker approach to investigate the conservation genetics of an arboreal vole (the
Sonoma tree vole [Arborimus pomo]) in the Pacific Northwest of North America. We compared geographic
patterns and overall levels of genetic diversity based on 55 amplified fragment length polymorphism (AFLP) loci
with those based on a single, commonly used mitochondrial locus, the control region. Although examination of
the control region data revealed the presence of 2 distinct mitochondrial DNA (mtDNA) clades within A. pomo
(1 in the north and 1 in the south of the species' range), the nuclear perspective provided by AFLP did not reveal
a similar geographic division within the species, supporting instead that A. pomo consists of a single panmictic
population. Genetic diversity estimates based on the mtDNA data (gene diversity 0.79 and 0.80 for the 2
clades) were much greater than those based on AFLP (gene diversity 0.31 and 0.19 for the 2 clades). These
contrasting results reflect inherent differences between mitochondrial and nuclear loci in mutation rate, effective
population size, expected time to monophyly, and mode of inheritance, and highlight the utility of using the
combination of AFLP and mtDNA when assessing the genetic status of wild populations and species of
mammals, especially those of conservation concern. In the case of A. pomo, our combined AFLP and mtDNA

  

Source: Arbogast, Brian - Department of Biological Sciences, University of North Carolina at Wilmington
Blois, Jessica - Department of Geography, University of Wisconsin at Madison

 

Collections: Environmental Sciences and Ecology; Geosciences