, Volume 64, Issue 2, pp 77–81 | Cite as

Biochemical genetics of mosquitofish III. Incidence and significance of multiple insemination

  • R. K. Chesser
  • M. W. Smith
  • M. H. Smith


Evidence for multiple insemination in the mosquitofish, Gambusia affinis, was detected by statistical analysis of the enzyme phenotypes in mother-offspring combinations for three loci. The probability of nondetection of multiple insemination events for diallelic loci with two or more males mating with a female was presented. The frequency of multiple insemination for G. affinis is at least 56% but is probably nearer to 100%. The high incidence of multiple insemination together with sperm storage and delayed fertilization could have important effects on allele frequencies through time and space. These effects are due to the increase in effective population size and overlap among generations.


Population Size Allele Frequency Effective Population Effective Population Size Sperm Storage 
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Copyright information

© Dr W. Junk Publishers 1984

Authors and Affiliations

  • R. K. Chesser
    • 1
  • M. W. Smith
    • 1
  • M. H. Smith
    • 1
  1. 1.Savannah River Ecology LaboratoryUniversity of GeorgiaAikenU.S.A.

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