A mixture of herbivore-induced plant volatiles from multiple host plant species enhances the attraction of a predatory bug under field-cage conditions

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Date: Dec. 2016
From: Arthropod - Plant Interactions(Vol. 10, Issue 6)
Publisher: Springer
Document Type: Report
Length: 288 words

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Abstract :

To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1007/s11829-016-9452-x Byline: Haftay G. Gebreziher (1), Kiyoshi Nakamuta (1) Keywords: Foraging behavior; Orius strigicollis; Herbivore-induced plant volatiles; Reconstituted HIPVs; Multiple host plant species; Outdoor cages Abstract: Plants respond to herbivore attack by emitting a blend of volatiles called herbivore-induced plant volatiles (HIPVs), which attract arthropod natural enemies. Under natural conditions and multiple cropping agriculture systems, natural enemies are thought to encounter a mixture of HIPVs emanating from multiple plant species. The effect of such a mixture of HIPVs on the responses of natural enemies under field conditions has not been explored. Our study assessed whether a mixture of HIPVs from multiple host plant species influenced predator responses in field-cage conditions. We investigated (1) foraging behaviors of a predatory bug, Orius strigicollis, on cotton bollworm (Helicoverpa armigera) larvae-infested multiple host plant species, and (2) the attractiveness of a mixture of reconstituted HIPVs from multiple plant species to O. strigicollis in outdoor cages. Significantly, greater numbers of predators were attracted to H. armigera-infested multiple plant species. The predators exterminated significantly greater numbers of H. armigera larvae with the multiple versus single plant species treatments. Significantly, greater numbers of O. strigicollis were captured on traps baited with the mixture of reconstituted HIPVs from multiple versus single plant species. The enhanced attractiveness of a mixture of HIPVs from multiple plant species to O. strigicollis might be the result of an additive effect of HIPVs from the three plant species when combined in a mixture. Author Affiliation: (1) Department of Horticulture, Chiba University, Matsudo, Chiba, 271-8510, Japan Article History: Registration Date: 09/07/2016 Received Date: 11/03/2016 Accepted Date: 09/07/2016 Online Date: 19/07/2016 Article note: Communicated by Livy Williams.

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Gale Document Number: GALE|A469342922