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Undesired species

Undesired FIAS symbol

Undesired forest invasive alien species (FIAS) are pests (insects or diseases) that are not present in Canada. These pests are known to be able to damage or kill North American tree species following field or laboratory observations in their country of origin. They can also be suspected of causing such damage following a plant health risk assessment based on available scientific information.

Plant health risk assessments for undesired FIAS are carried out by the Plant Health Risk Assessment Unit of the Canadian Food Inspection Agency according to the model proposed by the FAO through the International Plant Protection Convention.

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