Turkish Journal of Entomology (2017) 41, 17-26

Nimet Sema Gençer, Nabi Alper Kumral, Melis Seidi and Bilgi Pehlevan (2017)
Attraction responses of ladybird beetle Hippodamia variegata (Goeze, 1777) (Coleoptera: Coccinellidae) to single and binary mixture of synthetic herbivore-induced plant volatiles in laboratory tests
Turkish Journal of Entomology 41 (1), 17-26
Abstract: The chemoreception response of an aphidophagous coccinellid predators [Hippodamia variegate (Goeze, 1777) (Coleoptera: Coccinellidae)] to the odors from four different synthetic HIPVs [methyl salicylate (MeSA), (E)-2-hexenal (E(2)H), farnesene (F) and benzaldehyde (Be)] was tested using two different doses (0.001 and 1 g/L) of the HIPVs, both alone and in five binary combinations [MeSA+F, MeSA+E(2)H, MeSA+Be, E(2)H+F and Be+F]. Insect responses were evaluated using two-choice experiments with a Y-tube olfactometer in laboratory conditions. The low single dose of MeSA attracted significantly more adults of H. variegata (71%) towards tubes containing the volatile source compared with the control volatile containing pure n-hexane. Adults of H. variegata did not significantly prefer single forms of either Be, E(2)H or F compared with MeSA alone. Additionally, this study showed that binary blends of MeSA with Be or F had significantly more attractiveness for H. variegata adults than controls. Thus, the compounds, Be and F, used together with MeSA were observed to increase adult attraction. In the future, additional studies that monitor the preferences of field populations of these predators treated with the attractive HIPV combinations should be conducted to confirm these findings.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Nimet Sema Gencer, Nabi Alper Kumral

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Hippodamia variegata (predator)			Turkey