50] data listed in Table 2, the order of relative toxicity of the 4 organophosphate insecticides was diazinon [greater than or equal to] chlorpyrifos > coumaphos
In the Entomology laboratory of IVRI, AIT has been effectively standardized using technical grade insecticides and discriminating concentration (DC) for deltamethrin, cypermethrin, malathion, diazinon, fipronil, coumaphos
, fenvalerate and amitraz were worked out with repeatability.
That paper details ozone's breakdown of coumaphos
, fluvalinate, and several other pesticides that can accumulate in hives.
The study says neonics and another type of pesticide, coumaphos
, which is used to kill varroa mites, directly impact bees' brain physiology.
The other pesticide, coumaphos
, is employed outside the EU to kill the Varroa mite that attacks honeybees.
The chemicals used to treat for varroa specifically--fluvalinate, coumaphos
, flumethrin, amitraz and others--have been shown to reduce the viable sperm in otherwise normal looking drones.
diazinon, trichloronate, coumaphos
, tetraethylpyrophosphate, mevinphos, monocrotophos, naled, parathion, ronnel, sulfotepp, sulprofos, tetrachlorvinphos, and protothiofos.
These included four related insecticides--chlorpyrifos, coumaphos
, fonofos, and phorate--that may increase prostate cancer risk through a common biological pathway, Alavanja says.
At the very least, one of the insecticides, Coumaphos
, is an organophosphate, and organophosphates act like harmful estrogens that can lead to cancer
Organophosphorous compounds, which are among the most toxic substances known, are used in chemical weapons, including nerve agents such as sarin, soman, VX and alpha and in insecticides such as paraoxon, parathion and coumaphos
Department of Agriculture and university scientists that analyzed wax, pollen, and bee samples for the presence of 121 different pesticides or their metabolites, the most commonly found pesticides were fluvalinate and coumaphos
Of the 16 pesticides included in the present study, 9 were reported in detail on the AHS phase 1 questionnaires (chlorpyrifos, coumaphos
, diazinon, dichlorvos, fonofos, malathion, parathion, phorate, and terbufos); 6 were initially queried on the phase 1 take-home questionnaire checklist (acephate, dimethoate, disulfoton, ethoprop, phosmet, and tetrachlorvinphos); and a new chemical introduced in 1995 (tebupirimfos) was reported initially on the phase 2 questionnaire.