APPENDIX I-K: Dibrom – Idaho ‘06.
Spray used in
OK, got your attention. Much of
Is that really the case?
Naled (trade name Dibrom)
is an organophosphate with many of the same characteristics and concerns as malathion. Naled
can cause cholinesterase inhibition in humans: that is, it can over stimulate
the nervous system causing nausea, dizziness, confusion, and at high exposures,
can cause respiratory paralysis and death. One of the byproducts of degradation
of Naled is dichlorvos,
another registered organophosphate. This compound is of toxicological concern.
Researchers at the Cornell University Program on Breast Cancer and Environmental Risk Factors in
The pesticide trichlorfon is a common ingredient in the mosquito pesticide dibrom (naled). In one study, trichlorfon was found to cause a "severe reduction" in brain weight (and shape) in test animals exposed. The timing of exposure to the developing offspring appeared to be the key factor in determining neurological damage (known as the "critical brain growth period"). It occurred when the chemical was administered between 40-50 days gestation for the guinea pig, which scientists say, correlates with the brain growth spurt period for the animal.
Russian scientists studied the growth rates of fish called Bream (Abramis brama) after exposure to the dibrom/naled contaminant dichlorvos. The first major effect detected was a significant reduction in the growth rates of the fish. Researchers believe it may be due to the subtle neurotoxin actions of the pesticide and its effects upon the areas of the brain involved in feeding or food search mechanisms.
Naled is characterized as very highly toxic to bees and aquatic invertebrates. It is moderately to highly toxic to fish and slightly toxic to upland game birds and waterfowl. There is potential for chronic risk from Naled to estuarine invertebrates.
And, toxicity to humans aside, is the use of such pesticides even the best way to control mosquito populations and the spread of
- OVERKILL: Why Pesticide Spraying for West Nile Virus May Cause More Harm Than Good
"The current policies by state and municipal officials in the Commonwealth that allow and encourage the spraying of toxic pesticides to combat the West Nile virus (WNv) are both dangerous and ineffective.
Spraying toxic pesticides to combat WNv, may cause more harm than good, exposing the population to a new public health threat through exposure to toxic chemicals. In fact, spraying may even have the paradoxical effect of increasing the mosquito population by affecting its predators."