Environmental Entomology (1983) 12, 1420-1423

B.A. Croft and M.T. Aliniazee (1983)
Differential resistance to insecticides in Typhlodromus arboreus Chant and associate phytoseiid mites of apple in the Willamette Valley, Oregon
Environmental Entomology 12 (5), 1420-1423
Abstract: Strains of Typhlodromus arboreus Chant resistant to azinphosmethyl and carbaryl occur in intensively sprayed apple orchards of the Willamette Valley, Oreg. These mites are equally resistant to these compounds as are resistant strains of the congeneric species, Typhlodromus occidentalis Nesbitt, but they are more susceptible to diazinon and phosalone than T. occidentalis. Resistant T. arboreus are more resistant to azinphosmethyl and carbaryl, but are almost equally susceptible to diazinon and phosalone as another associated species, Amblyseius andersoni Chant. The implications of these resistance features to colonization by these mites of intensively, moderately, and seldomly sprayed apple orchards in the Willamette Valley are discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Galendromus occidentalis (predator)			U.S.A. (NW)
Amblyseius andersoni (predator)			U.S.A. (NW)
Metaseiulus arboreus (predator)			U.S.A. (NW)