Mouse (Mus musculus) stocks derived from tropical islands

New models for genetic analysis of life-history traits

Richard A. Miller, Robert Dysko, Clarence Chrisp, Renee Seguin, Luann Linsalata, Gretchen Buehner, James M. Harper, Steven Austad

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Founder effects, together with access to unoccupied ecological niches, may allow rodent populations on isolated islands to evolve constellations of life-history traits that distinguish them from their mainland relatives, for example in body size, litter size, and longevity. In particular, low intrinsic mortality risks on islands with reduced predator numbers and not subject to harsh winter climates may in principle support the development of stocks with extended longevity. Conversely, the conditions under which laboratory rodents are typically bred are thought to select for genotypes that produce large, rapidly maturing races with high early reproductive rates but diminished longevity. To test these ideas, and to generate new mouse stocks suitable for genetic and molecular analysis of the processes that time life-history events, we have developed specific pathogen-free stocks from mice trapped from three distinct populations: the U.S. mainland (Idaho) and the tropical Pacific islands Majuro and Pohnpei. Mice from all three locations were found to be shorter and lighter, to have smaller litters, and to have higher faecal corticosterone levels than mice of a genetically heterogeneous stock derived from four common laboratory inbred strains. Among the wild-derived stocks, mice from Pohnpei and Majuro were significantly lighter and shorter than Idaho-derived animals, even in populations kept from birth under identical housing conditions. Litter size and reproductive success rates did not differ significantly among the three wild-derived stocks. Although further work will be needed to see if, as predicted, the wild-derived stocks differ from one another and from laboratory mice in longevity, these stocks provide useful tools for genetic dissection of factors that regulate body size and reproductive success.

Original languageEnglish (US)
Pages (from-to)95-104
Number of pages10
JournalJournal of Zoology
Volume250
Issue number1
DOIs
StatePublished - Jan 2000
Externally publishedYes

Fingerprint

genetic analysis
Mus musculus
life history trait
genetic techniques and protocols
life history
litter size
mice
Pohnpei
rodent
reproductive success
body size
housing conditions
founder effect
mortality risk
molecular analysis
dissection
rodents
litter
genotype
pathogen

Keywords

  • Genetics
  • Islands
  • Life history
  • Mice
  • Mus musculus
  • Specific pathogen-free

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Miller, R. A., Dysko, R., Chrisp, C., Seguin, R., Linsalata, L., Buehner, G., ... Austad, S. (2000). Mouse (Mus musculus) stocks derived from tropical islands: New models for genetic analysis of life-history traits. Journal of Zoology, 250(1), 95-104. https://doi.org/10.1017/S0952836900001084

Mouse (Mus musculus) stocks derived from tropical islands : New models for genetic analysis of life-history traits. / Miller, Richard A.; Dysko, Robert; Chrisp, Clarence; Seguin, Renee; Linsalata, Luann; Buehner, Gretchen; Harper, James M.; Austad, Steven.

In: Journal of Zoology, Vol. 250, No. 1, 01.2000, p. 95-104.

Research output: Contribution to journalArticle

Miller, RA, Dysko, R, Chrisp, C, Seguin, R, Linsalata, L, Buehner, G, Harper, JM & Austad, S 2000, 'Mouse (Mus musculus) stocks derived from tropical islands: New models for genetic analysis of life-history traits', Journal of Zoology, vol. 250, no. 1, pp. 95-104. https://doi.org/10.1017/S0952836900001084
Miller, Richard A. ; Dysko, Robert ; Chrisp, Clarence ; Seguin, Renee ; Linsalata, Luann ; Buehner, Gretchen ; Harper, James M. ; Austad, Steven. / Mouse (Mus musculus) stocks derived from tropical islands : New models for genetic analysis of life-history traits. In: Journal of Zoology. 2000 ; Vol. 250, No. 1. pp. 95-104.
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