Journal article
Fecundity in twospotted spider mite (Acari: Tetranychidae) is increased by direct and systemic exposure to imidacloprid
Journal of economic entomology, Vol.95(4), pp.729-732
08/2002
Handle:
https://hdl.handle.net/2376/107938
PMID: 12216813
Abstract
The effect of imidacloprid on fecundity in twospotted spider mites, Tetranychus urticae Koch, was investigated in laboratory experiments using individual females on bean leaf discs. Mites were directly exposed to spray formulations of imidacloprid or fed on discs cut from a systemically treated bean plant. Imidacloprid-treated T. urticae produced 10-26% more eggs during the first 12 d of adult life and 19-23% more during adulthood compared with a water-only treatment. Increased egg production occurred immediately after exposure and lasted for about 15 d in sprayed mites. In mites exposed to imidacloprid by ingestion, increased egg production was not apparent until after 6 d and lasted until about day 18. Longevity was significantly greater in mites that ingested imidacloprid but not in sprayed mites. The significance and importance of imidacloprid-stimulation of fecundity in T. urticae to pest management in crop systems like hops, which routinely use this insecticide, is discussed.
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Details
- Title
- Fecundity in twospotted spider mite (Acari: Tetranychidae) is increased by direct and systemic exposure to imidacloprid
- Creators
- David G James - Department of Entomology, Washington State University, Irrigated Agriculture Research and Extension Center, Prosser 99350, USA. djames@tricky.wsu.eduTanya S Price
- Publication Details
- Journal of economic entomology, Vol.95(4), pp.729-732
- Academic Unit
- Entomology, Department of
- Publisher
- England
- Identifiers
- 99900547120401842
- Language
- English
- Resource Type
- Journal article