TY - JOUR
AU1 - Higashida, Keita
AU2 - Yano, Eizi
AU3 - Takabayashi, Junji
AU4 - Ozawa, Rika
AU5 - Yoneya, Kinuyo
AB - Oviposition by aphidophagous predators is triggered by semiochemicals emitted from aphids and host plants, such as volatile chemicals from host plants infested by aphids and from honeydew and aphid alarm pheromones. Aphidoletes aphidimyza (Rondani) (Diptera: Cecidomyiidae) is a common, widely distributed aphidophagous predator that is used as a biological agent to control aphids in greenhouses. Previous work showed that a volatile chemical emitted from honeydew produced by Aphis gossypii Glover (Hemiptera: Aphididae) on eggplants (Solanum melongena L.) attracted adult female A. aphidimyza, and identified it as phenylacetaldehyde. There are no known oviposition stimulants for A. aphidimyza females and the function of herbivory-induced plant volatiles (HIPVs) produced by eggplants infested by A. gossypii is not clear. Therefore, this study investigated the effects of HIPVs from eggplants induced by A. gossypii infestation and volatile chemicals in honeydew produced by A. gossypii on the oviposition of A. aphidimyza in bioassay cages. We found that HIPVs from A. gossypii-infested eggplants-induced oviposition. Moreover, using gas chromatography coupled with mass spectrometry, we identified 6-methyl-5-hepten-2-one, nonanal, and decanal as the HIPVs from eggplants. A mixture of these three compounds-induced oviposition of significantly more eggs than the control, but fewer eggs than the eggplant–aphid complex. Honeydew did not induce oviposition of significantly more eggs than the control. In conclusion, oviposition by A. aphidimyza females was induced by HIPVs from A. gossypii-infested eggplants. But the statistical difference in the number of oviposited eggs between the honeydew treatment and uninfested eggplant was not significant.
TI - Volatiles from eggplants infested by Aphis gossypii induce oviposition behavior in the aphidophagous gall midge Aphidoletes aphidimyza
JF - Arthropod-Plant Interactions
DO - 10.1007/s11829-021-09882-w
DA - 2022-02-01
UR - https://www.deepdyve.com/lp/springer-journals/volatiles-from-eggplants-infested-by-aphis-gossypii-induce-oviposition-eLqw3o0ohc
SP - 45
EP - 52
VL - 16
IS - 1
DP - DeepDyve
ER -