pyrethroids


Also found in: Dictionary, Encyclopedia.

py·re·throids

(pī-rē'throydz),
Synthetic pyrethrin derivatives that are used as insecticides; as a class these agents are less toxic to mammals than other effective insecticides.

pyrethroids

synthetic substances with activity similar to the naturally occurring pyrethrins. They include cypermethrin, cyhalothrin, deltamethrin, flumethrin, permethrin.
References in periodicals archive ?
Pyrethroids bound on the nanoparticles are then washed off by a small amount of organic solvent and collected for analysis.
This left pyrethroids as the primary weapon for subterranean termite management.
Similar observations were made in Uganda, where DDT and pyrethroids were used for indoor residual spraying in the presence of resistance; as soon as carbamates were deployed, the malaria parasite slide positivity rate declined substantially (11).
Plants were effective in order of Azadirachta indica > Melia azadirach > Pegnum hermala > Salsola baryosma> zingiber officinale; whereas effectiveness of pyrethroids was in order of deltamethrin > cypermethrin > bifenthrin.
Further, sampling of pyrethroids is complicated because the compounds readily sorb to organic matter in water, while the free concentration is what determines toxicity.
Some of the componds they use are pyrethroids, the same family of chemicals that lace the billowy white nes strung above their beds.
DDT (dichlorodiphenyltrichloroethane) and pyrethroids share the same mode of action on the insect nervous system, targeting the neuronal voltagegated sodium ion channels.
Some bed bug populations have become resistant to pyrethrins and pyrethroids.
These chemicals can be further classified as organophosphate pesticides, carbamate pesticides, organochlorine insecticides, and pyrethroids.
10, 14-17) Populations of P papatasi were shown to be susceptible to pyrethroid and organophosphate insecticides in laboratory studies of field-collected sand fly samples from North Africa and the Middle East.
TEHRAN (FNA)- Researchers provided new evidence of neurotoxicity in humans from pyrethroid insecticides, which are found in a wide variety of products and uses.
Pyrethroids were moderately associated with autism, and carbamates were associated with developmental delay.