Letter | Published:

Source of Moulting Hormone in Rhodnius

Naturevolume 168page558 (1951) | Download Citation

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Abstract

THE immediate source of the hormone which induces moulting in the larvæ and pupæ of Lepidoptera is the prothoracic gland1. But this gland is itself activated by a secretion from neuro-secretory cells in the dorsum of the brain2. It has seemed probable for some time that a similar two-stage control of moulting might exist in other insects3; and recently it has been found by Possompès4 that the lateral cells of the ring gland in the larvæ of Diptera are induced to secrete the pupation hormone by a factor liberated from the brain.

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References

  1. 1

    Fukuda, S., Proc. Imp. Acad. Tokyo, 16, 414 (1940).

  2. 2

    Williams, C. M., Biol. Bull., 93, 89 (1947).

  3. 3

    Wigglesworth, V. B., Bull. Biol. Franc. et Belg. Supp., 33, 174 (1947).

  4. 4

    Possompès, B., C.R. Acad. Sci., Paris, 231, 594 (1950).

  5. 5

    Wigglesworth, V. B., J. Exp. Biol., 17, 201 (1940).

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  1. Department of Zoology, University, Cambridge

    • V. B. WIGGLESWORTH

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https://doi.org/10.1038/168558b0

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