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Magnetic Remanence in Bats

  • Edward R. Buchler
  • Peter J. Wasilewski
Part of the Topics in Geobiology book series (TGBI, volume 5)

Abstract

Evidence which has been accumulating over the past 40 years shows that many species of temperate zone bats migrate and accurately locate their summer roost sites and winter hibernacula. They also home reasonably well when artificially displaced (Griffin, 1970; Baker, 1978). Despite abundant documentation of these behaviors, we still have no acceptable explanation for how they are accomplished. It is clear that echolocation alone is not sufficient. The visual capabilities of bats are much more refined than is generally believed (Childs and Buchler, 1981; Buchler and Childs, 1982). However, it seems likely that still other orientation cues must be available to them because a disconcerting number of displaced, blinded bats still have been able to home effectively (e.g., Mueller, 1966, 1968; Davis and Barbour, 1970). Encouraged in particular by recent research with homing pigeons (reviewed elsewhere in this volume), we were interested in determining ultimately if bats might also use the earth’s magnetic field as a cue during homing or migration. Because of the expected complexity and duration of the necessary experiments to test for the perception of a magnetic field by bats, we chose instead to first search for the presence of magnetic material.

Keywords

Natural Remanent Magnetization Homing Pigeon Demagnetization Curve Visual Capability Eptesicus Fuscus 
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.

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References

  1. Baker, R. R., 1978, The Evolutionary Ecology of Animal Migration, Holmes & Meier, New York, pp. 556–603.Google Scholar
  2. Buchler, E. R., and Childs, S. B., 1982, Use of the post-sunset glow as an orientation cue by big brown bats (Eptesicus fuscus), J. Mammal. 63: 243–247.CrossRefGoogle Scholar
  3. Childs, S. B., and Buchler, E. R., 1981, Perception of simulated stars by Eptesicus fuscus (Vesperti- lionidae): A potential navigational mechanism, Anim. Behav. 29: 1028–1035.CrossRefGoogle Scholar
  4. Davis, W. H., and Barbour, R. W., 1970, Homing in blinded bats (Myotis sodalis), J. Mammal. 51: 182–184.CrossRefGoogle Scholar
  5. Griffin, D. R., 1970, Migrations and homing of bats, in: Biology of Bats, Volume 1 (W. A. Wimsatt, ed.), Academic Press, New York, pp. 233–264.Google Scholar
  6. Gould, J. L., Kirschvink, J. L., and Deffeyes, K. S., 1978, Bees have magnetic remanence, Science 201: 1026–1028.PubMedCrossRefGoogle Scholar
  7. Mather, J. G., and Baker, R. R., 1981, Magnetic sense of direction in woodmice for route-based navigation, Nature 291: 152–155.CrossRefGoogle Scholar
  8. Mueller, H. C., 1966, Homing and distance-orientation in bats, Z. Tierpsychol. 23: 403–421.PubMedCrossRefGoogle Scholar
  9. Mueller, H. C., 1968, The role of vision in vespertilionid bats, Am. Midi. Nat. 79: 524–525.CrossRefGoogle Scholar
  10. Rubens, S. M., 1945, Cube-surface coil for producing a uniform magnetic field, Rev. Sci. Instrum. 16: 243–245.CrossRefGoogle Scholar
  11. Walcott, C., Gould, J. L., and Kirschvink, J. L., 1979, Pigeons have magnets, Science 205: 1027–1029.PubMedCrossRefGoogle Scholar
  12. Yorke, E. D., 1981, Sensitivity of pigeons to small magnetic field variations, J. Theor. Biol. 89: 533–537.PubMedCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Edward R. Buchler
    • 1
  • Peter J. Wasilewski
    • 2
  1. 1.ORI, Inc.RockvilleUSA
  2. 2.NASAGoddard Space Flight CenterGreenbeltUSA

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