28 July 2016
Spiny-cheek crayfish in Vilce river
This invasive crayfish (Orconectes limosus) what has become a big theat to the population of the European noble crayfish (Astacus astacus).
Now I have found one in southern Latvia, wich isn't a good sign, ofcourse.
Why is this crayfish a threat? Not only it more reproductive and can tolerate stronger water pollution, but as all North-american crayfish it carries the crayfish plague. It is a water mold that infects crayfish, most notably the European Astacus species which die within a few weeks of being infected.
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