Experientia

, Volume 33, Issue 9, pp 1181–1182 | Cite as

Changes in water permeability of an insect egg in response to level of water in the environment

  • J. L. Krysan
Physiologica
  • 13 Downloads

Summary

The water permeability of eggs of the southern corn rootworm, Diabrotica undecimpunctata howardi Barber, varied depending on the previous experience of the eggs. Eggs acclimated in a ‘water vapor’ system were seen to be less permeable than eggs acclimated in contact with moist paper, as measured by the rate of loss of water from the eggs and the susceptibility of the eggs to death from desiccation. This is the first known report of the ability of an insect egg to adapt to the level of water available in the environment.

Keywords

Permeability Corn Water Vapor Previous Experience Water Permeability 

References

  1. 1.
    J. L. Krysan, Entomologia exp. appl.30, 154 (1976).Google Scholar
  2. 2.
    T. F. Branson, P. L. Guss, J. L. Krysan and G. R. Sutter, in: Corn rootworms: Laboratory rearing and manipulation, p. 18. U. S. Dept. Agric., ARS-NC-28, 1975.Google Scholar
  3. 3.
    E. B. Edney, in: Water relations of terrestrial arthropods, p. 55. Cambridge Univ. Press, Cambridge 1957.Google Scholar
  4. 4.
    E. Bursell, in: Physiology of insecta, vol. 2, p. 343. Ed. M. Rockstein. Academic Press, New York 1973.Google Scholar

Copyright information

© Birkhäuser Verlag 1977

Authors and Affiliations

  • J. L. Krysan
    • 1
  1. 1.Northern Grain Insects Research Laboratory, Agricultural Research ServiceU. S. Department of AgricultureBrookingsUSA

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