chestnut lamprey, Ichthyomyzon castaneus, threatened species, parasitic lamprey, Chariton River
In the mid-1990s, Iowa Department of Natural Resources (IDNR) Fisheries Bureau biologists began receiving reports from anglers of a parasitic lamprey attached to fish taken immediately downstream from Rathbun Lake on the Chariton River in south-central Iowa; these reports have continued to present. In 2002, the IDNR received and identified a chestnut lamprey (Ichthyomyzon castaneus Girard) from an angler who removed the lamprey from a common carp (Cyprinus carpio Linnaeus) he captured. This record was the first for a lamprey from the Chariton River drainage in Iowa. Five additional specimens of chestnut lamprey have been collected and identified since this specimen was found, all from the same location. The Rathbun Lake tailrace is one of only a few locations on Iowa's interior rivers and streams with verified records for chestnut lamprey.
Journal of the Iowa Academy of Science
© Copyright 2011 by the Iowa Academy of Science, Inc.
Flammang, Mark K. and Olson, John R.
"The Occurrence of Chestnut Lamprey (lchthyomyzon castaneus; Pisces: Petromyzontidae) in the Chariton River in South-Central Iowa,"
Journal of the Iowa Academy of Science: JIAS, 117(1-4), 1-3.
Available at: https://scholarworks.uni.edu/jias/vol117/iss1/3