Full TGIF Record # 242643
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Web URL(s):http://www.turf.uconn.edu/pdf/research/reports/2011%20UConn%20Annual%20Turf%20Research%20Report.pdf#page=88
    Last checked: 5/23/2014
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Author(s):Obeysekara, P.; Legrand, A.
Title:Do tiphiid wasps use herbivore-induced plant volatiles for finding white grubs?
Section:Scientific publications (abstracts & citations)
Other records with the "Scientific publications (abstracts & citations)" Section
Source:2011 Annual Turfgrass Research Report [Connecticut]. 2012, p. 80.
# of Pages:1
Publishing Information:Storrs, Connecticut: Department of Plant Science and Landscape Architecture, University of Connecticut
Keywords:TIC Keywords: Beneficial insects; Exomala orientalis; Insect profile; Popillia japonica; Tiphia popilliavora; Tiphia vernalis; Vespidae; Volatile organic compounds; White grub control
Abstract/Contents:"Japanese beetle (Popillia japonica) and Oriental beetle (Anomala orientalis) are considered invasive species and have been reported as key pests of urban landscapes in the Northeast. Tiphia vernalis Rohwer and Tiphia popilliavora Rohwer were introduced as biocontrol agents against these beetles. These parasitic wasps burrow into the soil and search for grubs. When a host is found, the wasp paralyzes it momentarily and attaches an egg in a location that is specific for that species. It is unknown if these wasps can detect patches of concealed hosts from a distance above ground and what role, if any, herbivore-induced plant volatiles play in their host location. The work reported here increases our understanding of Tiphia wasp host location in turfgrass systems. This study evaluated the responses of female T. vernalis and T. popilliavora to grub-infested and healthy plants in Y-tube olfactometer bioassays. Also the effect of root-herbivory on the composition of turfgrass volatile profiles was investigated by collecting volatiles from healthy and grub-infested grasses. Tiphia wasps were highly attracted to volatiles emitted by grub-infested tall fescue (TF) and Kentucky bluegrass (KBG) over healthy grasses. In contrast, wasps did not exhibit a significant preference for grub-infested perennial ryegrass (PR) as compared to the control plants. Monoterpene levels emitted by grub-infested KBG and TF were greater than that of control plants. Low levels of monoterpenes were observed for both test and control perennial ryegrass. The elevated levels of monoterpenes emitted by grub-infested TF and KBG coincided with attractiveness to the Tiphiid wasps. These results suggest that Tiphia spp. use herbivore-induced plant volatiles to locate white grubs in turfgrass systems."
Note:Partial reprint appears in 2012 Annual Turfgrass Research Report [Connecticut], 2012, p. 71
This item is an abstract only!
"Entomological Society of America, Eastern Branch 83rd Annual Meeting, Hartford, CT. March 24th, 2012"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Obeysekara, P., and A. Legrand. 2012. Do tiphiid wasps use herbivore-induced plant volatiles for finding white grubs?. 2008 Turfgrass Res. Rep. [Connecticut]. p. 80.
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    Last checked: 5/23/2014
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    Notes: Item is within a single large file
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