Genetic evidence for female-biased dispersal in the bullfrog, Rana catesbeiana (Ranidae)

Mol Ecol. 2003 Nov;12(11):3165-72. doi: 10.1046/j.1365-294x.2003.01948.x.


Sex-biased dispersal is an important but unexplored area of amphibian ecology. We predicted female-biased dispersal in the bullfrog (Rana catesbeiana) based on aspects of their mating system and tested this prediction using data from seven polymorphic DNA microsatellite loci. Allelic (F-statistics) and genotypic [assignment index, (AIc)] frequencies from nine Ontario populations support our prediction, although significant sex differences in inbreeding and variance of AIc were not detected. The diversity of mating systems found in amphibians represents an important avenue for investigating the relationship between reproductive systems, dispersal and phylogeny.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • DNA Primers
  • Electrophoresis, Polyacrylamide Gel
  • Female
  • Genetics, Population*
  • Geography*
  • Microsatellite Repeats / genetics
  • Movement / physiology*
  • Ontario
  • Population Dynamics
  • Rana catesbeiana / genetics*
  • Rana catesbeiana / physiology
  • Sexual Behavior, Animal*


  • DNA Primers