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Variation in response to insecticides by douglas-fir tussock moth, orgyia pseudotsugata (lepidoptera : Lymantriidae), populations
Journal article   Peer reviewed

Variation in response to insecticides by douglas-fir tussock moth, orgyia pseudotsugata (lepidoptera : Lymantriidae), populations

Jacqueline L. Robertson, Lucille M. Boelter, Robert M. Russell and N. E. Savin
Canadian entomologist, Vol.110(3), pp.325-328
03/01/1978
DOI: 10.4039/Ent110325-3

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Abstract

Selected insecticides were topically applied to different populations of the Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough). For each insecticide, the hypothesis of equal response curves was rejected by the likelihood ratio test. Even for two successive generations of the same populations, the hypothesis of equality was not accepted for some insecticides. Chemical control programs directed at different populations of this insect may be adversely affected by such variations.

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