The fisher also had brodifacoum, a second generation anticoagulant rodenticide detected in its system. The researchers believe the fisher experienced convulsions, muscle tremors and respiratory distress during its death.
There were pieces of meat believed to be hotdog inside the fisher’s stomach. It was pointed out that if this hotdog were eaten by any other animal it would be toxic to that animal and this toxicant can travel through the food chain, so any scavenger eating an animal poisoned with it would also likely become ill or die.
Methomyl is potentially a highly poisonous material in humans. It is highly toxic if it is ingested or absorbed through the eyes, moderately poisonous when inhaled, but of lower toxicity with skin, or dermal, exposure. Methomyl is a highly toxic inhibitor of cholinesterase, an essential nervous system enzyme.
Symptoms of anti-cholinesterase activity include weakness, blurred vision, headache, nausea, abdominal cramps, chest discomfort, constriction of pupils, sweating, muscle tremors, and decreased pulse.
The route, duration, and concentration of methomyl exposure will affect the severity of poisoning and the number and types of symptoms that occur. Complete recovery from an acute poisoning by methomyl with no long term health effects is possible if exposure ceases and the victim has time to reform the normal level of cholinesterase and to recover from symptoms.
The public is being advised to not handle or touch any items located in any active or inactive marijuana garden site. The items in the site could potentially poison the person by the mere handling of the items; some of these chemicals can travel through exposed skin. Allowing your dog off leash in areas where one of these grows is located could also result in your dog being poisoned. If a marijuana grow site is located, leave the area immediately and notify local law enforcement.
This fisher, being held by Humboldt County sheriff Mike Downey, died a very painful death due to poisons most likely ingested at a marijuana grow site.