Title: A Biological and Toxicological Study of Strains of Two-Spotted Spider Mites1
Abstract:Strains of two-spotted spider mite, Tetranychus urticae (Koch), collected from the rose variety Better Times from 5 greenhouses in New Jersey, were compared toxicologically and biologically with a kno...Strains of two-spotted spider mite, Tetranychus urticae (Koch), collected from the rose variety Better Times from 5 greenhouses in New Jersey, were compared toxicologically and biologically with a known insecticide-susceptible and a known resistant strain. All strains were reared in the greenhouse for 12 months, using specially designed isolation cages. Comparison of LC50’s of parathion, ethion, dicofol, and Aramite® (2-(p-tert-butylphenoxy) isopropyl 2-chloroethyl sufite) showed that all candidate colonies were resistant to parathion and ethion, while the response to dicofol and Aramite varied from those that were almost susceptible to those having a high resistance level. Differences in egg production, egg viability, and length of life cycle were found in all colonies. Susceptible mites demonstrated the greatest overall reproductive capacity in that they oviposited the most eggs, had the greatest percent of viable eggs, and the shortest life cycle. It was concluded that each strain was biologically as well as toxicologically distinct.Read More
Publication Year: 1967
Publication Date: 1967-08-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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