Impacts of Synergy-505 on the functional response and behavior of the reduviid bug, Rhynocoris marginatus
Entomology Research Unit, St. Xavier's College (Autonomous), Palayankottai 627 002, India
Abstract
The impact of the insecticide, Synergy-505 (chlorpyrifos 50 % and cypermethrin 5 % E.C), on the functional response, predatory behavior, and mating behavior of a non-target reduviid, Rhynocoris marginatus (Fabricius) (Hemiptera: Reduviidae), a potential biological control agent, were studied. Though both normal and Synergy-505-exposed R. marginatus exhibited Holling’s type II curvilinear functional response, Synergy-505 caused a less pronounced type II functional response with reduced numbers of prey killed, attack rate, searching time, and prolonged handling time in 4th and 5th nymphal instars and adult males and females reflecting reduced predatory potential. Synergy-505 also delayed the predatory and mating events. The impacts of Synergy-505 on functional response, predatory behavior, and mating behavior were more evident at higher concentrations of Synergy-505.
Correspondence:
a*eruxavier@gmail.com,
bsjrajan@ymail.com,
cmich02_raja@yahoo.co.in,
*Corresponding author
Associate Editor: Megha Parajuleewas editor of this paper.
Received: 13 November 2008 | Accepted: 13 October 2010 | Published: 28 October 2010
Copyright: This is an open access paper. We use the Creative Commons Attribution 3.0 license that permits unrestricted use, provided that the paper is properly attributed.
ISSN: 1536-2442 | Volume 10, Number 187
Cite this paper as: Ambrose DP, Rajan SJ, Raja JM. 2010. Impacts of Synergy-505 on the functional response and behavior of the reduviid bug, Rhynocoris marginatus. Journal of Insect Science 10:187, available online: insectscience.org/10.187
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