Founder effect in an island population of bighorn sheep

P. W. Hedrick, G. A. Gutierrez-Espeleta, R. N. Lee

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

The Tiburon Island population of desert bighorn sheep has increased in size from 20 founders in 1975 to approximately 650 in 1999. This population is now the only population being used as the source stock for transplantations throughout northern Mexico. To evaluate the genetic variation in this population, we examined 10 microsatellite loci and a major histocompatibility complex (MHC) locus. The genetic variation was significantly less than found in other populations of the same subspecies in Arizona. Using a model that takes into account the effects of genetic drift on genetic distance, most of the genetic distance observed between the Tiburon population and Arizona samples could be explained. Because of the low genetic variation found in the Tiburon population, it is suggested that the Tiburon population should be supplemented with additional unrelated animals or that the transplant populations should be supplemented with unrelated animals.

Original languageEnglish (US)
Pages (from-to)851-857
Number of pages7
JournalMolecular Ecology
Volume10
Issue number4
DOIs
StatePublished - 2001

Fingerprint

Bighorn Sheep
Founder Effect
founder effect
Ovis canadensis
Islands
sheep
genetic variation
Animals
Transplants
Microsatellite Repeats
Population
major histocompatibility complex
transplantation
animal
genetic drift
subspecies
desert
genetic distance
Genetic Drift
loci

Keywords

  • Founder effect
  • Genetic distance
  • Genetic drift
  • Major histocompatibiliy complex
  • Microsatellite loci

ASJC Scopus subject areas

  • Ecology
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

Cite this

Hedrick, P. W., Gutierrez-Espeleta, G. A., & Lee, R. N. (2001). Founder effect in an island population of bighorn sheep. Molecular Ecology, 10(4), 851-857. https://doi.org/10.1046/j.1365-294X.2001.01243.x

Founder effect in an island population of bighorn sheep. / Hedrick, P. W.; Gutierrez-Espeleta, G. A.; Lee, R. N.

In: Molecular Ecology, Vol. 10, No. 4, 2001, p. 851-857.

Research output: Contribution to journalArticle

Hedrick, PW, Gutierrez-Espeleta, GA & Lee, RN 2001, 'Founder effect in an island population of bighorn sheep', Molecular Ecology, vol. 10, no. 4, pp. 851-857. https://doi.org/10.1046/j.1365-294X.2001.01243.x
Hedrick, P. W. ; Gutierrez-Espeleta, G. A. ; Lee, R. N. / Founder effect in an island population of bighorn sheep. In: Molecular Ecology. 2001 ; Vol. 10, No. 4. pp. 851-857.
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