Experimental and Applied Acarology (1997) 21, 171-177

T.G. Grout, G.I. Richards and P.R. Stephen (1997)
Further non-target effects of citrus pesticides on Euseius addoensis and Euseius citri (Acari: Phytoseiidae)
Experimental and Applied Acarology 21 (3), 171-177
Abstract: A series of leaf-disc bioassays were conducted to determine the detrimental effect of field-weathered residues of various pesticides used on citrus in southern Africa on the adult females of two species of Euseius (Wainstein). Acaricides, insecticides and stem- or soil-applied systemics were tested against E. addoensis (van der Merwe and Ryke). Fungicides were tested against E. citri (van der Merwe and Ryke) because it is the dominant predatory mite on citrus in the regions where most fungicides are used. The residual toxicity and persistence of most acaricides and fungicides were relatively low. Aldicarb was the only systemic product to cause more than 5% mortality. The most detrimental insecticides tested were cypermethrin, formetanate, fluvalinate, omethoate plus mineral oil and fipronil. Of the insect growth regulators tested, diofenolan was the most detrimental. All the fungicides suppressed fecundity whereas most of the systemic products stimulated fecundity. The other compounds had variable effects on fecundity.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Tim G. Grout

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
health/environmental effects of pesticides
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.
Euseius addoensis (predator)
Euseius citri (predator)