Invasive rusty crayfish appear to be dying off and it’s not clear why

Read the full story in Newsweek.

Populations of rusty crayfish, an invasive species in the lakes of Minnesota and Wisconsin, have seen a steady decline in some regions—and, for once, humans aren’t responsible.

A study published in the journal Ecological Applications on February 11 found that over a 33-year period, the rusty crayfish population in several northern Wisconsin lakes had decreased naturally without human input, dropping to nearly zero in four of the lakes.

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