Source of sex pheromone of the egg-larval parasitoid,Ascogaster reticulatus Watanabe (Hymenoptera: Braconidae) |
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| Authors: | Y Kainoh Y Oishi |
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| Affiliation: | (1) Institute of Agriculture and Forestry University of Tsukuba, Tsukuba, 305 Ibaraki, Japan;(2) Present address: Nippon Ham Research Institute, Oohata, Yoshida, Haibara, 421-03 Shizuoka, Japan |
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| Abstract: | A sex pheromone ofAscogaster reticulatus Watanabe (Hymenoptera: Braconidae), identified as (Z)-9-hexadecenal, elicits males' antennal matesearching behavior. In order to localize the source of sex pheromone production, each body part was separated and extracted with hexane and then subjected to 9-cm Petri dish bioassay. The highest activity was found in thorax extract. Among legs, wings, and thorax, legs have the highest activity. Among fore, middle, and hind legs, hind legs have the highest activity. Among coxa and trochanter, femur, tibia, and tarsus, tibia has the highest activity. From these results, the presence of a tibial sex pheromone gland was suggested. |
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| Keywords: | Sex pheromone gland mating behavior Ascogaster reticulatus Hymenoptera Braconidae egg-larval parasitoid Adoxophyes sp Lepidoptera Tortricidae tibia |
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