Rate of release of spruce budworm pheromone from virgin females and synthetic lures |
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Authors: | S. B. Ramaswamy R. T. Cardé |
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Affiliation: | (1) Department of Entomology and Pesticide Research Center, Michigan State University, 48824 East Lansing, Michigan;(2) Present address: Department of Entomology, Mississippi State University, State College, 39762 Mississippi;(3) Department of Entomology, University of Massachusetts, 01003 Amherst, Massachusetts |
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Abstract: | The rate of pheromone [(E)- and (Z)-11-tetradecenal] release from calling virginChoristoneura fumiferana females and synthetic lures was determined in both static and aerated atmospheres. In a static system ca. 2 ng/hr was recovered per female. Owing to the > 75% adsorption onto the females' bodies in static atmospheres, the actual release rate has to be corrected to roughly 9–27 ng/hr, depending on the percentage adsorbed. In the air-flow system, females were found to release between 4 and 20 ng/hr. On a 168 light-dark cycle, calling began 1–2 hr before lights-off and continued nonstop until lights-on. Pheromone was emitted throughout calling, while no pheromone was detected during the noncalling periods.Lepidoptera: Tortricidae.Published as Journal Article No. 10258 of the Michigan Agricultural Experiment Station. |
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Keywords: | Choristoneura fumiferana spruce budworm sex pheromone pheromone release rates (E)-11-tetradecenal (Z)-11-tetradecenal airborne collection |
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