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Consumption rates and predatory activity of adult and fourth instar larvae of the seven spot ladybird, Coccinella septempunctata (L.), following contact with dimethoate residue and contaminated prey in laboratory arenas

Lookup NU author(s): Sally Singh, Dr Gordon Port

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Abstract

The sub-lethal effects of dimethoate residues on the condition and predatory efficiency of adult and fourth instar larvae of Coccinella septempunctata were investigated in laboratory arenas. Overall, predatory efficiency of both adult and larval C. septempunctata was significantly reduced following encounter with dimethoate residues and treated prey. Prey-choice experiments revealed that adult coccinellids consumed significantly fewer treated than untreated aphids over the 5-h experimental period. Fourth instar larvae preferentially consumed untreated aphids when given the choice of full rate dimethoate treated aphids or untreated aphids. The implications for post-treatment coccinellid survival and integrated pest management are considered. © 2004 Elsevier Inc. All rights reserved.

Publication metadata

Author(s): Singh SR, Walters KFA, Port GR, Northing P

Publication type: Article

Publication status: Published

Journal: Biological Control

Year: 2004

Volume: 30

Issue: 2

Pages: 127-133

ISSN (print): 1049-9644

ISSN (electronic): 1090-2112

Publisher: Academic Press

URL: http://dx.doi.org/10.1016/j.biocontrol.2004.01.003

DOI: 10.1016/j.biocontrol.2004.01.003

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