How the invasive spiny water flea spread across Canada, and what we can do about it

By Sam Lucy Behle, PhD Student, Université du Québec en Abitibi-Témiscamingue (UQAT)
Beatrix Beisner, Professor, Aquatic ecology, Université du Québec à Montréal (UQAM)
Guillaume Grosbois, Professeur Écologie Aquatique, Université du Québec en Abitibi-Témiscamingue (UQAT)

Across the tranquil waters of Canada’s vast network of lakes and rivers, a quiet invader is on the move. The spiny water flea, Bythotrephes cederströmii, is a microscopic predator that is forever altering the ecological fabric of aquatic habitats in Canada.

Originally from Eurasia, Bythotrephes casts a long shadow over the ecosystems it invades. Its presence in Canadian waters represents an ongoing ecological challenge, one that intertwines the…

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