![]() ![]() malasiaca however, we could not detect them in female A. Gomadalactones are essential contact pheromone components that elicit mating behavior in male A. malasiaca males mounted and showed abdominal bending behavior when presented with glass models that were coated with each extract of female A. glabripennis showed mating behavior when they were exposed to a crude extract of female A. glabripennis coated on a black glass model and revealed a hydrocarbon fraction and a blend of fractions to show activity but relatively weak, suggesting the presence of other unknown active compounds. We evaluated the contact pheromonal activity of crude extract and fractions of female A. The surface of the female is covered with contact sex pheromones that elicit male mating behavior within species. Hybridization between these two species is suspected in Japan. glabripennis with host plants, niches, and emergence season. malasiaca shows an extensive overlap with A. The Asian longicorn beetle Anoplophora glabripennis is a recently arrived invasive species to Japan. We investigated the possible reasons for this phenomenon and the difference in male mate recognition systems between A. glabripennis extract, but without success. We, therefore, attempted to detect gomadalactones in female A. ![]() malasiaca showed mating behavior when exposed to both female A. malasiaca, whereas a considerable number of male A. glabripennis showed mating behavior when they were exposed to the crude extract of female A. There might be other, as yet unidentified active compounds in the extract. glabripennis and revealed a hydrocarbon fraction to show activity however, it was relatively weak. The surface of the female body is covered with contact sex pheromones that elicit male mating behavior within species. Hybridization between these two species is suspected. malasiaca show an extensive overlap with host plants, niches, and emergence season. The invasive Asian longicorn beetle Anoplophora glabripennis and native Japanese white-spotted longicorn beetle A. ![]()
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