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Science 22 February 1974:
Vol. 183. no. 4126, pp. 760 - 762
DOI: 10.1126/science.183.4126.760
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Articles

Biological Responses of Atta texana to Its Alarm Pheromone and the Enantiomer of the Pheromone

Robert G. Riley 1, Robert M. Silverstein 1, and John C. Moser 2

1 State University of New York, College of Environmental Science and Forestry, Syracuse 13210
2 Southern Forest Experimental Station, U.S. Department of Agriculture, Alexandria, Louisiana 71360

S-(+)-4-Methyl-3-heptanone is the principal alarm pheromone of Atta texana. The dextrorotatory form of the ketone has also been identified from Atta cephalotes. Both enantiomers have been synthesized in high optical purity; Atta texana is more responsive to the (+) enantiomer than to the (-) form. These results implicate a chiral receptor system.


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