Letter | Published:

Effect of Ligaturing on Puparium Formation in the Larva of the Tsetse Fly, Glossina morsitans Westwood

Naturevolume 214pages389390 (1967) | Download Citation



IT has been known for a long time that the application of a ligature posterior to the brain in the larva of the blowfly, Calliphora erythrocephala Meig., prevents the pupation of the posterior part, provided that the ligature is applied before a “critical period” in the development of the larva has been reached1. If the ligature is applied after the critical period has passed then the whole larva darkens and forms a puparium.

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  1. 1

    Fraenkel, G., Proc. Roy. Soc., B, 118, 1 (1935).

  2. 2

    Karlson, P., Vitamins and Hormones, 14, 227 (1956).

  3. 3

    Karlson, P., J. Cell. Comp. Physiol., 66, 69 (1965).

  4. 4

    Finlayson, L. H., Bull. Entomol Res. (in the press).

  5. 5

    Fraenkel, G., and Hsiao, C., Science, 138, 27 (1962).

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  1. Department of Biological Sciences, University College of Rhodesia, Salisbury, Rhodesia

    • P. A. LANGLEY


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