Discovery of invasive crayfish in the Willamette River drainage concerns biologists

Invasive Crayfish Found In Ashland Canal; Could Be Bad News For

Invasive signal crayfish discovered for first time in Minnesota

Red Swamp Crayfish (Procambarus clarkii) - Species Profile

Crayfish Study Overview – The River Mile

Oregon Lake Watch

Invasive, Aggressive Crayfish Threatens Bay Watershed

Propagule pressure and environmental filters related to non-native

PDF) Invasive crayfish in the Pacific Northwest

Invasive crayfish threaten Oregon's Signal crayfish

Invasive Species – Oregon Conservation Strategy

Signal Crayfish (Pacifastacus leniusculus) - Species Profile

Pacific Coast Rivers of the Coterminous United States - ScienceDirect

PDF) The State of Crayfish in the Pacific Northwest