Genetic differentiation among cottontails from isolated playa basins

R. A. Van Den Bussche, M. J. Hamilton, R. K. Chesser, K. T. Scribner

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Protein variation in 182 Sylvilagus floridanus from 19 playa basins in Castro Co., Texas was examined using starch-gel electrophoresis. Heterozygote deficiencies were noted for all populations. This heterozygote deficiency may be due to differential selection against heterozygous individuals over the winter months. Results of F-statistics indicated a significant degree of population differentiation at six loci. Nei's genetic distance between populations ranged from 0.20 to 0.388 and a significant association between genetic distance and linear geographic distance among playas was found. These results suggest that genetic exchange and long-distance dispersal may be hindered by expanses of unsuitable habitat.

Original languageEnglish
Pages (from-to)153-157
Number of pages5
Issue number2
StatePublished - Nov 1987


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