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The Crayfish of Nebraska

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74 HABITATS The White River Crayfish appears to prefer quieter waters with abundant vegetation and is seldom collected from streams with strong flow. It is most often found in sloughs, swamps, ponds and seasonally flooded ditches but will also use creeks and smaller rivers. Substrates include silt, muck, packed mud, sand and gravel. It will dig a simple burrow if a waterbody dries up or for the winter. BEHAVIOR They have been found to be tolerant of a wide range of pH, pollution, temperature, turbidity as well as a variety of bottom types and vegetation. 70 REPRODUCTION Not too much is known about the reproduction in the White River Crayfish. It is possible that females mate in the fall before entering their wintering burrows, then lay and fertilize their eggs in the burrow in the spring. But they must have an extended breeding season as females with eggs have been found from March to December and mature males from April to November. Females carrying eggs and young tend to hide in a burrow so they are seldom collected. One female collected in March in Missouri was carrying 303 young. In Illinois, one female collected in December had 30 young. FEEDING AND SPECIES INTERACTIONS In Kentucky, they are often collected along with Devil Crayfish, Calico Crayfish and Red Swamp Crayfish (among others). 228 In Wisconsin, they have been found with Devil Crayfish, Prairie Crayfish and Northern Crayfish. 110 IMPACTS The White River Crayfish is widely grown for food and the bait trade.

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