Aquatic invasive species

Frequently asked questions

What is an aquatic invasive species?

An aquatic invasive species (AIS) is generally a plant, crustacean, mollusk, fish, or algae introduced into a new habitat through human activities. As it is no longer affected by predators, diseases, and other constraints of its native habitat, an aquatic invasive species can reproduce quickly and monopolize the resources of the environment, to the detriment of native species.

Why is Sépaq targeting the Eurasian watermilfoil and the spiny water flea?

These two species are currently proliferating in Quebec’s lakes and inland waterbodies and are taking advantage of watercraft movement to invade new lakes that may be hundreds of kilometres away. It is very difficult, if not impossible, to control an aquatic invasive species once established in a waterbody. Prevention is the best way to avoid invasion.

How can we stop these species from spreading?

We can reduce the risk of these species spreading by avoiding transporting watercraft from one waterbody to another. If towed personal watercraft are permitted at a Sépaq establishment, the protection procedures depend on the level of risk to which the waterbodies are exposed in this region. At an establishment where the risk of invasion is high, the watercraft must be drained, cleaned with water (at high pressure, hot water when possible), and thoroughly dried before every launch. At an establishment where the risk of invasion is moderate, a visual inspection and hand-removal of plants stuck to the boat and its trailer are enough to reduce the risk of spreading by nearly 90%, if this inspection is carried out before every launch.

Is there a list of these species or a map of their distribution?

Yes, the Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP) compile observations of these species. This information is available on their respective websites. You can also get more information from your local watershed organization (OBV).

I think that I have spotted an AIS. Who should I tell?

If you have your cell phone handy, take pictures of the main features of the species you are seeing and the surrounding site. You can then report your observation to MELCCFP customer service (1-844-523-6738) or submit it using a downloadable application such as Sentinelle (managed by MELCCFP) or INaturalist.

Protecting our lakes is everyone's responsibility.