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Science 17 July 1981:
Vol. 213. no. 4505, pp. 361 - 363
DOI: 10.1126/science.213.4505.361
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Articles

Soldier Determination in Ants: New Role for Juvenile Hormone

DIANA E. WHEELER 1 and H. FREDERIK NIJHOUT 1

1 Department of Zoology, Duke University, Durham, North Carolina 27706

Topical application of juvenile hormone analog induces soldier development in the ant Pheidole bicarinata. Soldier induction takes place if the juvenile hormone analog is present during a period of sensitivity that occurs during the last larval instar. Control of worker dimorphism seems to be accomplished through control of timing of metamorphosis. The smallest size at which metamorphosis can be initiated is shifted upwardfrom 1.2 to 1.7 millimeters by exposure to the juvenile hormone analog during the sensitive period.

Submitted on March 4, 1981
Revised on May 4, 1981


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Science. ISSN 0036-8075 (print), 1095-9203 (online)