Abstract
Thirty allozyme loci and 35 mitochondrial DNA (mtDNA) restriction sites were examined in 24 white-tailed deer and 46 mule deer from a hybrid zone in West Texas. A common mtDNA genotype is shared by all of the mule deer with 67% of the white-tailed deer. At the albumin locus, 13% of the white-tailed deer and 24% of the mule deer are heterozygous, sharing alleles that are otherwise species-specific in allopatric populations; 7% of the mule deer are homozygous for the allele that is characteristic of allopatric white-tailed deer. Gene flow appears to have been bidirectional, with greater genetic introgression into mule deer. The mtDNA data suggest that matings between white-tailed and mule deer have occurred in the past. Despite evidence of genetic introgression, analysis of multilocus genotypes indicates that none of the deer examined is an F1 hybrid. Production of such hybrids appears to be generally uncommon in North American deer; management plans that assume otherwise should be reconsidered.
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This work was supported by an NIH Biomedical Research Support Grant, Texas Agricultural Experiment Station Program Development and Expanded Research Awards, the Caesar Kleberg Research Program in Wildlife Ecology, and a Natural Sciences and Engineering Research Council Operating Grant.
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Ballinger, S.W., Blankenship, L.H., Bickham, J.W. et al. Allozyme and mitochondrial DNA analysis of a hybrid zone between white-tailed deer and mule deer (Odocoileus) in west texas. Biochem Genet 30, 1–11 (1992). https://doi.org/10.1007/BF00554423
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DOI: https://doi.org/10.1007/BF00554423