BioControl (2013) 58, 595-605

D.B. Lima, V.B. Monteiro, R.N.C. Guedes, H.A.A. Siqueira, A. Pallini and M.G.C. Gondim Jr. (2013)
Acaricide toxicity and synergism of fenpyroximate to the coconut mite predator Neoseiulus baraki
BioControl 58 (5), 595-605
Abstract: The non-target effects of acaricides, used against Aceria guerreronis (Acari: Eriophyidae) the coconut mite, on its natural enemies are not known. Therefore we assessed the susceptibility of A. guerreronis and its predator Neoseiulus baraki (Acari: Phytoseiidae) to selected acaricides, their impact on N. baraki rate of increase, and the synergism of fenpyroximate towards this predator. Toxicity bioassays and synergism of fenpyroximate (with piperonyl butoxide, triphenyl phosphate and diethyl maleate) were performed by spraying the mites under a Potter tower. The instantaneous rate of increase (r_i ) was calculated ten days after spraying the predator. Chlorfenapyr and fenpyroximate were selective (both LC₅₀ and LC₉₀ were higher for N. baraki than for A. guerreronis) and did not affect the predator r_i . Only piperonyl butoxide significantly synergized fenpyroximate suggesting the involvement of cytochrome P450 monooxygenase in the N. baraki tolerance. Fenpyroximate and chlorfenapyr are promising agents for managing A. guerreronis in combination with N. baraki because both are selective and do not affect its predator r_i.
(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): Raul Narciso C. Guedes, Herbert A.A. Siqueira

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.
	Aceria guerreronis	Coconut (Cocos nucifera)
Neoseiulus baraki (predator)	Aceria guerreronis	Coconut (Cocos nucifera)