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Population dynamics and the evolution of sex-determination in lemmings

Published online by Cambridge University Press:  14 April 2009

A. D. Carothers
A. D. Carothers
Affiliation:
M.R.C. Clinical and Population Cytogenetics Unit, Western General Hospital, Edinburgh EH4 2XU
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Summary

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The hypothesis is advanced that the evolutionary stability of the unusual sex-determining mechanisms of the Wood Lemming (Myopus schisticolor) and of the Varying Lemming (Dicrostonyx torquatus) is a direct consequence of certain characteristic features of their population dynamics, and that these include phases of unrestrained population growth and of mass dispersal. Computer simulations confirm the feasibility of such an explanation. Predictions of this hypothesis are found to differ in a potentially testable manner from those of the ‘inbreeding’ hypothesis of Stenseth (1978). The demonstration of such a direct link between population ecology and evolutionary genetics would, if substantiated, be exceptional in mammals.

Type
Research Article
Information
Genetics Research , Volume 36 , Issue 2 , October 1980 , pp. 199 - 209
Copyright
Copyright © Cambridge University Press 1980

References

REFERENCES

Bengtsson, B. O. (1977). Evolution of the sex ratio in the Wood Lemming, Myopus schisticolor. In Measuring Selection in Natural Populations (ed. Fenchel, T. and Christiansen, F.). Berlin: Springer-Verlag.Google Scholar
Bodmer, W. F. & Edwards, A. W. F. (1960). Natural selection and the sex ratio. Annals of Human Genetics 24, 239–244.Google Scholar
Chernyavsky, F. B. (1978). Population cycles of Siberian and Varying Lemmings on Wrangel Island. Transactions of the Second Congress of the Theriological Society of the U.S.S.R., Moscow, 210–212. (In Russian.)Google Scholar
Fredga, K., Gropp, A., Winking, H. & Frank, F. (1976). Fertile XX- and XY-type females in the Wood Lemming, Myopus schisticolor. Nature 261, 225–227.Google Scholar
Fredga, K., Gropp, A., Winking, H. & Frank, F. (1977). A hypothesis explaining the exceptional sex ratio in the Wood Lemming (Myopus schisticolor). Hereditas 85, 101–104.Google Scholar
Gileva, E. A. & Chebotar, N. A. (1979). Fertile XO males and females in the Varying Lemming, Dicrostonyx torquatus Pall. (1779). A unique genetic system of sex determination. Heredity 42, 66–77.Google Scholar
Herbst, E. W., Fredga, K., Frank, F., Winking, H. & Gropp, A. (1978). Cytological identification of two X-chromosome types in the Wood Lemming (Myopus schisticolor). Chromosoma (Berl.) 69, 185–191.Google Scholar
Kalela, O. & Oksala, T. (1966). Sex ratio in the wood lemming, Myopus schisticolor (Lilljeb.), in nature and in captivity. Annales Universitatis Turkuensis, Ser. AII, 37, 1–24.Google Scholar
Marsden, W. (1964). The Lemming Year. Chatto & Windus.Google Scholar
Smith, J. Maynard & Stenseth, N. C. (1978). On the evolutionary stability of the female biased sex ratio in the wood lemming (Myopus schisticolor): the effect of inbreeding. Heredity 41, 205–214.Google Scholar
Shelford, V. E. (1943). The abundance of the collared lemming in the Churchill area, 1929–40. Ecology 24, 472–484.Google Scholar
Stenseth, N. C. (1978). Is the female biased sex ratio in wood lemming Myopus schisticolor maintained by cyclic inbreeding? Oikos 30, 83–89.Google Scholar