Aggregation pheromone characterization and comparison inDrosophila ananassae andDrosophila bipectinata |
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Authors: | Angela M Schaner Kate J Graham Larry L Jackson |
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Affiliation: | (1) Biochemistry Group Chemistry Department, Montana State University, 59717 Bozeman, Montana |
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Abstract: | (Z)-11-Octadecenyl acetate (Z11–18 Ac) and (Z)-11-eicosenyl acetate (Z11–20 Ac) were identified as the aggregation pheromones ofDrosophila ananassae, andZ11–20 Ac was identified as the aggregation pheromone ofDrosophila bipectinata. Z11–18 Ac andZ11–20 Ac were not attractive alone; however, in combination with fermenting food odors, the acetates attracted flies of both sexes in a wind-tunnel olfactometer. The pheromones were present in the ejaculatory bulb of sexually mature male flies and transferred to the female during mating. MaleD. bipectinata released little if anyZ11–20 Ac to the food; however, recently mated females releasedZ11–20 Ac to the surrounding surfaces in just a few hours after mating.D. ananassae males, on the other hand, appeared to release moreZ11–18 Ac andZ11–20 Ac to the surroundings than mated females. AlthoughD. bipectinata males had noZ11–18 Ac, flies were as attracted toZ11–18 Ac as to an equal quantity ofZ11–20 Ac.D. ananassae were attracted toZ11–18 Ac but not toZ11–16 Ac orZ11–20 Ac. However,Z11–20 Ac in combination withZ11–18 Ac was significantly more attractive thanZ11–18 Ac alone. |
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Keywords: | Drosophila ananassae Drosophila bipectinata Diptera Dro-sophilidae aggregation pheromone (Z)-11-octadecenyl acetate (Z)-11-eicosenyl acetate cis-vaccenyl acetate |
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