Interspecies Fight Club Offers Hope for Noble Crayfish

Astacus astacus is battling invasive species from one side and plague from the other. Researchers ran the numbers to predict which will come out on top.

By Sean Mowbray
Mar 6, 2022 12:00 PMMar 6, 2022 12:01 PM
Crayfish
(Credit: zdenek_macat/Shutterstock)

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A plague, carried by invasive species originally from North America, has long decimated populations of Europe’s noble crayfish (Astacus astacus) now listed as vulnerable on the IUCN Red List. Recent discoveries of noble crayfish resisting less virulent strains of the plague, however, have given scientists hope that the species may, in time, weather this pathogenic storm.

Don’t celebrate just yet. The resistance also prompts questions of how the noble crayfish might fare against its invasive crayfish counterparts if the impact of the devastating plague is eventually neutralized. Could the invasives outmuscle the native species?

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