Pest Management Science (2009) 65, 300-305

Frank B. Antwi and Robert K.D. Peterson (2009)
Toxicity of delta-phenothrin and resmethrin to non-target insects
Pest Management Science 65 (3), 300-305
Abstract: BACKGROUND: The susceptibility of adult house cricket, Acheta domesticus (L.), adult convergent lady beetle, Hippodamia convergens (Guérin-Méneville), and larval fall armyworm, Spodoptera frugiperda (JE Smith), to resmethrin and delta-phenothrin synergized with piperonyl butoxide (PBO) was evaluated in a laboratory bioassay procedure.
RESULTS: The 1 day LC₅₀ values for resmethrin + PBO were 23.2, 32.08 and 307.18 ng cm^-2 for A. domesticus, H. convergens and S. frugiperda respectively. The 1 day LC₅₀ values for delta- phenothrin + PBO were 26.9, 74.91 and 228.57 ng cm^-2 for A. domesticus, H. convergens and S. frugiperda respectively. The regression relationship between species mortality and concentration explained 51-81% of the variation for resmethrin + PBO and 72-97% of the variation for delta-phenothrin + PBO. The LC₅₀ values decreased with time for these insecticides for all surrogate species. In terms of sensitivities among the insects to resmethrin + PBO and delta-phenothrin + PBO, A. domesticus was most sensitive, followed by H. convergens and then S. frugiperda.
CONCLUSION: The results indicate that resmethrin + PBO was generally more toxic than delta-phenothrin + PBO. Based on the results, A. domesticus seems to be a good surrogate species for estimating potential non-target terrestrial insect impacts from exposure to pyrethroids used in public health applications.
(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): Frank B. Antwi, Robert K.D. Peterson

Research topic(s) for pests/diseases/weeds:
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.
	Spodoptera frugiperda
Hippodamia convergens (predator)