Introduction of parasitoids to control emerald ash borer at Grosse Île and the Irish Memorial NHS, Quebec, Canada

As done at several other sites in Canada, including in Ontario and Quebec since 2013, the project consists of introducing parasitoids to control the emerald ash borer (an invasive alien insect) on Grosse-Île at Grosse-Île and the Irish Memorial NHS. The main objective of introducing parasitoids is to delay and slow down the insect's devastating effects on the island's forests and surrounding areas, as the infestation is still in its early phase on Grosse-Île. The biological control project is part of a research program led by the Canadian Forest Service (CFS) of Natural Resources Canada (NRCAN) and will take 2 years to introduce, followed by a verification follow-up of up to 1 to 3 years. Two to three different species approved and authorized by the Canadian Food Inspection Agency (CFIA) will be introduced (T. planipennisi, O. Agrili, S. Galinae (as available)), according to the instructions and research protocol of Natural Resources Canada's (NRCAN) Canadian Forest Service (CFS). The precise introduction site on the island will be chosen on-site during the first year of the project by the Natural Resources Canada team, based on environmental attributes such as ash density and propagation objectives.

Latest update

April 26, 2024 - The assessment decision statement has been issued to the proponent.



Grosse Île and the Irish Memorial National Historic Site
Grosse Île
Saint-Antoine-de-l'Isle-aux-Grues, Quebec G0R 1P0

  • Location

    • Grosse Île and the Irish Memorial National Historic Site (Quebec)
  • Nature of Activity

    • Remediation and conservation
  • Assessment Status

  • Start Date

  • Proponent

    Parks Canada and Natural Resources Canada
  • Authorities

    • Parks Canada Agency
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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