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Summary
Faulty pesticide use led to organophosphorous poisoning deaths in marmosets. Clinical signs and lesions, including central nervous system hemorrhages and bone marrow necrosis, confirmed cholinesterase inhibitor toxicity.
Area of Science:
- Veterinary Toxicology
- Primate Research
- Pesticide Safety
Background:
- Organophosphorus pesticides are widely used but can be toxic.
- Laboratory animal facilities require stringent safety protocols for pesticide use.
- Accidental poisonings in research animals can compromise study integrity and animal welfare.
Purpose of the Study:
- To report a case of fatal organophosphorus poisoning in marmosets due to improper pesticide application.
- To describe the clinical and pathological findings associated with this poisoning event.
- To highlight the importance of safe pesticide handling in laboratory animal settings.
Main Methods:
- Investigation of mortality in a marmoset colony exposed to a chlorpyrifos-diazinon pesticide mixture.
- Clinical sign observation in affected animals.
- Necropsy and histopathological examination of deceased marmosets.
Main Results:
- Nineteen out of 98 marmosets (19% mortality) died following exposure to a chlorpyrifos-diazinon combination.
- Clinical signs consistent with cholinesterase inhibitor poisoning were observed.
- Morphological lesions included hemorrhages (especially in the CNS) and bone marrow necrosis.
Conclusions:
- Accidental exposure to organophosphorus pesticides can cause significant mortality in non-human primates.
- Proper training and adherence to safety protocols are crucial when using pesticides in animal facilities.
- Organophosphorus poisoning in marmosets presents with characteristic clinical and pathological findings.