Aquatic Invasive Species

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What are Invasive Species?

Organisms (animals, plants, parasites, viruses etc) not native to a region that when introduced, either intentionally or accidentally, out-compete native species for available resources. Invasive species become successful in their new environments due to their high reproductive rates and absence of native predators and diseases. Invasive species can have negative economic, social, environmental and human health implications.

What are Aquatic Invasive Species (AIS)?

An aquatic invasive species (AIS) can either live in freshwater or marine environments. The majority of the species of concern to Manitoba, such as Zebra and Quagga mussels, Spiny Waterflea, Rusty Crayfish and Asian Carp are freshwater species. Manitoba currently has 15 aquatic invasive species. This number is small compared to the number of aquatic invasive species found in the Great Lakes (>200) and Mississippi (> 120) drainage basins.