A preview of the PDF is not available
California Island deer mice: genetics, morphometrics, and evolution
Abstract and Figures
Deer mice, Peromyscus maniculatus, are found on all eight California Channel Islands and are classified as separate subspecies on each island. Distinct mitochondrial DNA haplotypes, identified by restriction enzyme analysis, were found in island deer mice, and on five of the eight islands deer mice have unique haplotypes, suggesting genetic isolation and independent evolution of several island subspecies. Founder effects on mtDNA diversity in island populations relative to mainland populations are evident. The connec-tivity of the deer mouse populations on East, Middle, and West Anacapa Islands (P. m. anacapae) was assessed using sequence data from the mitochondrial cytochrome c oxidase subunit II gene (COII). A common haplotype was found on all three Anacapa Islets, although Middle and East Anacapa each had an additional unique haplotype. This suggests that deer mice on Anacapa are functioning as a metapopulation, with some gene flow or extinction/recolonization occurring among the islets. Discriminant function analysis of cranial and external morphological characters for three island sub-species, P. m. anacapae, P. m. santacruzae, and P. m. elusus, produced a high rate of correct classification, indicating strong morphological as well as genetic differentiation. The specimens used for the morphometric study were museum specimens collected at different times during the past century. A surprising result of the morphological analysis was that each subspecies had exhibited extremely rapid change in several characters over this time period.
Figures - uploaded by Oliver Pergams
All figure content in this area was uploaded by Oliver Pergams
Content may be subject to copyright.