|
ORGANOPHOSPHATE INSECTICIDES
Malathion and naled are organophosphate insecticides that can be absorbed by inhalation, ingestion, and skin penetration. In cases of high exposure, organophosphates may cause cholinesterase inhibition. Significant cholinesterase inhibition may result in a spectrum of cholinergic symptoms. Early symptoms of overt poisoning often include headache, nausea, dizziness, miosis, sweating, salivation, lacrimation and rhinorrhea. As the condition worsens, muscle twitching, weakness, tremor, incoordination, abdominal cramps, vomiting, diarrhea, anxiety, restlessness, depression and memory loss may occur. In addition, bradycardia, bronchospasm, and bronchorrhea are possible. Loss of consciousness, incontinence, convulsions and respiratory depression indicate a life-threatening severity of poisoning.
In children with high exposure resulting in organophosphate poisoning, seizures and mental status changes including lethargy and coma are common. Presenting signs in such cases often include flaccid muscle weakness, miosis and excessive salivation.
Additional considerations
Although most people are not expected to experience any symptoms given the low anticipated levels of exposure, some individuals may be particularly sensitive to the pesticide products or their carriers, which may include petroleum solvents. Such individuals could experience shortterm effects, such as skin, eye and mucous membrane irritation, as well as exacerbation of such conditions as asthma.
As with chemical exposures in general, pregnant women should take care to minimize exposures when possible, as the fetus may be vulnerable.
Symptoms reported locally: allergic reactions-mucous/"head cold" type symptoms, asthma, bowel (unusual type of constipation), unusual lethargy, nausea, severe vomiting. One case of unconsciousness required hospitalization-maybe related to Naled insect traps prior to 7/29.
Dog - sick/vomiting.
If you are experiencing symptoms, see a doctor immediately; say that you may have been exposed to Naled and get your CHOLINESTERASE checked.
Symptoms of acute exposure to organophosphate (Naled) or cholinesterase-inhibiting compounds may include the following: Acute cholinesterase exposure may be evidenced by headache, numbness, tingling sensations, poor coordination, nausea, vomiting, diarrhea, abdominal cramps, excessive sweating, salivation and tearing, constricted pupils, blurred vision, tightness in chest, weakness, muscle twitching and confusion; in extreme cases, unconsciousness, convulsions, severe respiratory depression, slow heartbeat and death may occur.
Former EPA Head Scientist and Director of research (for the last twenty years) in the Bio-Research Dept.at UC Berkeley say Dibrom/Naled should never have been used for the Oriental fruit fly "eradication" program in Santa Barbara. Further they stated that there is no science that proves that the alternative, less toxic methods (there are several) wouldn't be equally as effective, or even more effective in the disposal process of these fruit flies.This will provide protection for our agriculture while reducing vastly the harm to all of us, and the precious environment in our trust for our children's children. The California Department of Food and Agriculture found 3 Oriental Fruit Flies, Bactrocera (=Dacus)dorsalis Hendel, in Hope Ranch. Due to this they went into State Mandated eradication mode. What this means is that for 8 Square miles surrounding the location of the found specimens they are applying and arsenal of Naled. "The Male Annihilation treatment will be the primary eradication tool. A minimum of 600 bait stations of Naled/methyl eugenol mixture will be applied to utility poles, street trees, etc., in each square mile for 8 square miles.(Some of the gel will end up on the ground) Treatment will be repeated every 2 weeks for two life cycles beyond the last fly found. If larvae or mated females are found a property, the foliage of host plants on the infested and adjacent properties will be treated with malathion/protein spray. This could extend as far as a 200 meter radius repeated every 6 to 14 days. More Soil drenches will be applied to the dripline of hosts with fruit known or suspected to be infested with Oriental fruit fly eggs or larvae.
Application is made using hydraulic spray equipment to wet the ground to a depth of approximately on-half inch. The material used is diazinon." http://countyofsb.org/agcomm/fruitfly/workPlan.pdf. Experts conclude that Organophosphates are extremely Dangerous. The organophosphates are a group of related pesticides that affect the functioning of the nervous system. Naled primarily affects the nervous system through cholinesterase inhibition. Cholinesterase is on of many important enzymes needed for proper functioning of the nervous system in humans, other vertebrates and insects. With cholinesterase inhibition there is constant uncontrolled, rapid twitching of some muscles which can lead to paralysis of breathing, cause convulsions and in extreme cases,death. Repeated exposures to small doses of Naled and other organophosphates may lead to symptoms of acute overexposure. Organophosphates are among EPA's highest priority for review under the Food Quality Protection Act. Toxic to humans, fish, aquatic invertebrates, bees, birds,beneficial insects. Naled makes people chemical sensitive (scientifically shown). It's a suspected mutagen and in rat studies accumalates in the bones . It breaks down to DDVP which is even more toxic.
Map of Area Treated:
http://countyofsb.org/agcomm/fruitfly/Santa%20Barbara%20OFF%20Map.JPG
Information on Naled
Cholinesterase:
http://extoxnet.orst.edu/tibs/cholines.htm
Studies on Pesticide Exposure:
http://www.undeerc.org/newsroom/newsitem.asp?id=267
|
|