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The contact toxicity of indoxacarb and five other insecticides to Orius insidiosus (Hemiptera: Anthocoridae) and Aphidius colemani (Hymenoptera: Braconidae), beneficials used in the greenhouse industry
Author(s) -
Bostanian Noubar J,
Akalach Mohammed
Publication year - 2004
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.938
Subject(s) - indoxacarb , biology , abamectin , braconidae , toxicology , anthocoridae , dimethoate , hemiptera , hymenoptera , botany , pesticide , agronomy , parasitoid , predation , ecology , predator
The contact toxicity of indoxacarb, abamectin, endosulfan, insecticide soap, S ‐kinoprene and dimethoate to Orius insidiosus (Say) and Aphidius colemani Viereck were studied in the laboratory. These beneficials are often used in the greenhouses to manage various insect pests. Indoxacarb is slow acting and therefore, to estimate lethal dosages, observations should be continued for several days until data stabilize. Seven days after treatment, the LC 50 was 0.119 g AI litre −1 for O insidiosus adults and 0.019 g AI litre −1 for A colemani . At that time, the recommended field concentration was 0.479 times the LC 50 for O insidiosus adults and three times the LC 50 for A colemani . In contrast, indoxacarb had no adverse effect on the reproductive capacity of wasps surviving a treatment or the developing wasps in the aphid mummy. Among the other insecticides S ‐kinoprene was the most innocuous while dimethoate was the most toxic to the two beneficials. The other insecticides had overlapping toxicities. Copyright © 2004 Society of Chemical Industry