Deterrence of repeated oviposition by fruit-marking pheromone inCeratitis capitata (Diptera: Tephritidae) |
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Authors: | Ronald J Prokopy James R Ziegler Tim T Y Wong |
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Affiliation: | (1) Department of Entomology, University of Massachusetts, 01003 Amherst, Massachusetts;(2) ARS Hawaiian Fruit Flies Laboratory, U.S. Department of Agriculture, Box 2280, 96804 Honolulu, Hawaii |
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Abstract: | During ovipositor dragging on the fruit surface following egg laying in hawthorne fruit,Ceratitis capitata (Wiedemann) females deposit an unidentified pheromone that deters repeated oviposition attempts in that fruit. The pheromone proved water soluble and, when collected and sprayed in aqueous solution onto uninfested fruits in laboratory cages, effectively deterred boring attempts byC. capitata females of wild origin for at least 6 days (termination of test). A laboratory population ofC. capitata cultured on artificial media for more than 200 generations deposited pheromone that proved equally as deterrent to wild fly oviposition as pheromone from wild flies. However, lab fly oviposition was not effectively deterred by the presence of pheromone. The ecological significance of the pheromone is discussed. |
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Keywords: | pheromone Ceratitis capitata oviposition deterrent laboratory insect quality Tephritidae |
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