Letter | Published:

An Apparent Beneficial Effect of Gamma-Radiation on the Flour Mite

Abstract

INSECT pests of cereal products have been found to differ markedly in their tolerance to γ-radiation, but of 17 species examined by Cornwell et al. 1 13 were sterilized at about 6 × 103 rep. Recently, however, Cork2 has suggested that the life-span of the flour beetle Tribolium confusum may be extended by a single dose of 3 × 103 r. A comparable beneficial effect on the flour mite Tyroglyphus farinae (Deg.) was also suggested by the following work.

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References

  1. 1

    Cornwell, P. B., Crook, L. J., and Bull, J. O., Nature, 179, 670 (1957).

  2. 2

    Cork, J. M., Rad. Res., 7, 551 (1957).

  3. 3

    Melville, C., Bull. ent. Res., 48, 723 (1957).

  4. 4

    Odum, E. P., “Fundamentals of Ecology” (Saunders, Philadelphia, 1953).

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