On April 2nd, 2012. See this statement in context.
April 2nd, 2012 / 4:10 p.m.
Director General, Ecosystems and Oceans Science Sector, Department of Fisheries and Oceans
I'm not sure if I can give you a very deep answer to that question. Certainly lampricide, generally, would be a chemical or a poison that would work specifically on the lamprey.
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