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Science 22 February 1980:
Vol. 207. no. 4433, pp. 898 - 900
DOI: 10.1126/science.207.4433.898
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Articles

Feedback Control of Juvenile Hormone Synthesis in Cockroaches: Possible Role for Ecdysterone

BARBARA STAY 1, THOMAS FRIEDEL 2, STEPHEN S. TOBE 2, and ERIC C. MUNDALL 2

1 Department of Zoology University of Iowa, Iowa City 52242
2 Department of Zoology, University of Toronto, Toronto, Ontario, Canada

Inactive female corpora allata implanted into adult males become active and continue to synthesize juvenile hormone at high rates. However, when an ovary is implanted together with the corpora allata, rates of juvenile hormone synthesis decline as the oocytes complete maturation. Injections of ecdysterone mimic the effect of an implanted ovary.

Submitted on October 1, 1979

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