Advertisement

Experientia

, Volume 35, Issue 11, pp 1464–1465 | Cite as

Lemming cycles in captivity

  • A. Semb-Johansson
  • R. Wiger
  • C. E. Engh
Article
  • 6 Downloads

Summary

2 freely growing confined populations of Norwegian lemmings displayed population peaks and declines which were similar to natural populations. In most other studies of confined populations of rodents, the number of animals stabilized and maintained fairly constant numbers. Juvenile mortality and reduced pregnancy rate contributed to the decline.

Keywords

Natural Population Pregnancy Rate Constant Number Population Peak Juvenile Mortality 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    G.C. Clough, Pap. Norw. State Game Res. Inst., 2nd ser.,28, 50 (1968); O. Kalela, Ann. Acad. Sci. fenn. Ser. A, IV Biol.178, 1 (1971); T. Koponen, Ann. Zool. fenn.7, 141 (1970).Google Scholar
  2. 2.
    R.Z. Brown, Ecol. Monogr.23, 217 (1953); J.B. Calhoun, in: Behaviour and Environment. Ed. A.H. Esser. Plenum Press, New York-London 1971; P. Crowcroft and F.P. Rowe, Proc. zool. Soc. London129, 359 (1957); W.Z. Lidicker, Jr, Res. Popul. Ecol.7, 57 (1965); C.R. Terman, Ecology46, 890 (1965).Google Scholar
  3. 3.
    C.H. Southwick, Ecology36, 212 (1955).Google Scholar
  4. 4.
    L.L. De Kock and I. Rohn, Z. Tierpsychol.30, 405 (1972).Google Scholar
  5. 5.
    G.C. Clough, unpublished.Google Scholar
  6. 6.
    H.L. Ratcliffe, Proc. natl Acad. Sci.47, 455 (1961).Google Scholar
  7. 7.
    W.R. Thompson, Science125, 698 (1957).Google Scholar
  8. 8.
    J.A. Lloyd and J.J. Christian, J. Mammal48, 262 (1967). C.D. Louch, Ecology37, 701 (1956).Google Scholar
  9. 9.
    R.T. Houlihan, Univ. Calif. Publs Zool.65, 327 (1963).Google Scholar
  10. 10.
    K. Myers, in: Behaviour and Environment. Ed. A.H. Esser. Plenum Press, New York-London 1971.Google Scholar

Copyright information

© Birkhäuser Verlag 1979

Authors and Affiliations

  • A. Semb-Johansson
    • 1
    • 2
  • R. Wiger
    • 1
    • 2
  • C. E. Engh
    • 1
    • 2
  1. 1.Institute of ZoologyUniversity of OsloOsloNorway
  2. 2.Institute of Geology and BiologyUniversity of TromsøTromsø(Norway)

Personalised recommendations