Pheromone Orientation: Role of Internal Control Mechanisms

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Science  04 Dec 1981:
Vol. 214, Issue 4525, pp. 1147-1149
DOI: 10.1126/science.214.4525.1147


Male American cockroaches walk a zigzag path upwind toward a source of female sex pheromone. Although the maximum width of the pathway is regulated by the width of an odor plume, many turns are made before the edge of a wide plume is encountered. In addition to the pheromone regulation of the insect's orientation movements, an internal mechanism appears to influence the zigzag turning pattern.