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Toxicity of Pesticides to Chrysopa oculata Say (Neuroptera: Chrysopidae)

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Abstract:

The susceptibility of first instars and adults of Chrysopa oculata Say to pesticides used in tree fruit production in Ontario was assessed. Most organophosphorous insecticides except phosalone were toxic to both stages. The synthetic pyrethroids, with the exception of fenvalerate and fIucythrinate, were generally more toxic than organophosphorous insecticides. Adults and first instars were equally susceptible to most insecticides. The acaricides and fungicides were not toxic at the levels tested. Methomyl and carbaryl were toxic to both stages, but pirimicarb was almost nontoxic. DDT and endosulfan were toxic only at high concentrations. Reasons for differences in toxicities were not investigated. In the field, azinphosmethyl and phosmet were toxic to larvae for at least 14 days. Permethrin killed larvae caged on foliage for ca. 10 days, whereas most survived on phosalone-treated foliage 1 day after application.

Document Type: Research Article

Publication date: February 1, 1985

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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