Variation in the olfactory response of 13 populations of the predatory mite Amblyseius womersleyi to Tetranychus urticae-infested plant volatiles (Acari: Phytoseiidae, Tetranychidae) |
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Authors: | Maeda T Takabayashi J Yano S Takafuji A |
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Affiliation: | (1) Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University, Oiwakecho, Kitashirakawa, Sakyoku, Kyoto, 6068502, Japan |
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Abstract: | We studied the response of the predatory mite Amblyseius womersleyi collected in 13 different sites in Japan toward Tetranychus urticae-infested kidney bean leaf volatiles in a Y-tube olfactometer. The predatory mites were collected from eight plant species infested by one of three tetranychid mite species. The predators' responses to the infested-leaf volatiles varied from 33% to 97% among the populations. The predators collected at 10 sites showed a significant preference for infested-leaf volatiles, whereas those collected at three tea plantations did not distinguish between the infested- and uninfested-leaf volatiles. We discussed the possible factors that affected the olfactory response of A. womersleyi towards the infested leaf volatiles. |
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Keywords: | Amblyseius womersleyi variation herbivore /content/v3p2q86377702548/xxlarge8208.gif" alt=" dash" align=" MIDDLE" BORDER=" 0" >induced plant volatiles Tetranychus urticae Y /content/v3p2q86377702548/xxlarge8208.gif" alt=" dash" align=" MIDDLE" BORDER=" 0" >tube olfactometer |
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