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International Journal of Tropical Insect Science (1)

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Insecticidal Activity of Pyrethroids Against Triatoma infestans
N. Casabé, F. Melgar, E. J. Wood, E. N. Zerba
Journal:

Insect Science and Its Application / Volume 9 / Issue 2 / April 1988

Published online by Cambridge University Press:

19 September 2011, pp. 233-236

Print publication:

April 1988
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The insecticide activity of synthetic pyrethroids to Triatoma infestans was tested by topical application. Deltamethrin, fenpropathrin, bioresmethrin, permethrin, cypermethrin, d-phenothrin and cyphenothrin showed the highest activity.
The susceptibility to poisoning of adult insects by these pyrethroids (except bioresmethrin) was increased by cotreatment with profenofos or with piperonyl butoxide (PBO). Assayed pyrethroids synergized by PBO showed similar general structure.
The vinyl cyano pyrethroids showed a knockdown effect with a delayed recovery. During 15 days after intoxication with deltamethrin, insect recovery was observed. Recovery blockage by PBO was observed in cyphenothrin and deltamethrin poisoning at low doses.