2 Missouri crayfish species may be listed as 'threatened' under Endangered Species Act

ST. LOUIS, Mo. — The U.S. Fish and Wildlife Service has proposed listing two kinds of Missouri crayfish as threatened under the Endangered Species Act, as well as identifying “critical habitat” for their survival and recovery in the state’s southeast watersheds.Both the Big Creek crayfish and the St. Francis River crayfish have seen their numbers contract since the introduction of nonnative woodland crayfish in the 1980s. While the invasive crayfish is seen as the “primary threat” to the native species, the agency said in its listing last week that they also contend with water quality issues, …

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