Spring River Basin - Crayfish
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Crayfish find shelter under rocks and logs in streams where they burrow into gravel. Crayfish are crustaceans, and the outer part of their body is known as an exoskeleton. Sometimes industrial pollutants can hinder their ability to produce their armor-like exoskeleton. They have pinchers on the end of their arms. Pictures of crayfish and more information can be found at the Missouri Department of Conservation’s crayfish website http://www.conservation.mo.gov/nathis/arthopo/crayfish/varcraw.htm#anchor1219237.

The Spring River Basin contains five species of crayfish. These species are: the bristley cave crayfish (Cambarus setosus), the Neosho midget crayfish (Orconectes macrus), the ringed crayfish (Orconectes neglectus), the northern crayfish (Orconectes virilis), and the grassland crayfish (Procambarus gracilis) (Pflieger 1996).

Neosho Midget Crayfish

Image of Neosho Midget Crayfish

Source: http://www.conservation.mo.gov/nathis/arthopo/crayfish/varcraw.htm#anchor1231058

Ringed Crayfish

Image of Ringed Crayfish

Source: http://www.conservation.mo.gov/nathis/arthopo/crayfish/varcraw.htm#anchor1226051

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Missouri Department
of Natural Resources

Missouri Watershed Information Network (MoWIN)
Send comments to: mowin1@missouri.edu
205 Agricultural Engineering
Columbia, MO 65211
Phone: (573) 882-0085
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Fax: (573) 884-5650

Page last updated August 26, 2008