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Science 31 January 1964:
Vol. 143. no. 3605, pp. 478 - 479
DOI: 10.1126/science.143.3605.478
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Articles

Hormonal Activation of the Insect Brain

Stanley D. Beck 1 and Nancy Alexander 1

1 Department of Entomology University of Wisconsin, Madison

A new endocrine function has been shown to play a role in insect morphogenesis. The hormone named proctodone is secreted by specialized cells of the hindgut and appears to affect the brain, resulting in the activation of the brain hormone-producing system. Proctodone has been found in two lepidopterous species—Ostrinia nubilalis and Galleria mellonella. In the O. nubilalis, proctodone plays a part in both photoperiodism and diapause.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)