Relationships of Foliar Azinphosmethyl Concentration, Exposure Time, and Mortality for the Apple Maggot (Diptera: Tephritidae)


Source: Journal of Economic Entomology, Volume 82, Number 3, June 1989 , pp. 895-905(11)

Publisher: Entomological Society of America

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A laboratory bioassay to study the effects of azinphosmethyl on adult apple maggot, Rhagoletis pomonella (Walsh), mortality and oviposition was developed by placing apple branches bearing field-weathered residues inside a wind tunnel. Repellency by azinphosmethyl that was observed in a previous study did not occur. Thirty-six percent of the females died after 24 h of exposure to 29- to 30-d-old residues, and the oviposition punctures per female were 66% lower than that in the untreated controls. This reduction in oviposition was greater than would have been expected from mortality alone and is probably caused by sublethal poisoning. These results imply that sufficient protection may be provided by older residues (>14 d) when apple maggot populations are low. Mortality was described by two mathematical models, which were corrected for the time that the flies spent on the nontoxic walls. The relationships developed in this study should contribute to the development of a "treat-when-needed" strategy for apple maggot control.

Document Type: Research Article

Publication date: June 1, 1989

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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