The Minnesota Department of Natural Resources and the U.S. Fish and Wildlife Service have been using environmental DNA (or eDNA) technology to detect invasive carp in the St. Croix, Mississippi and Minnesota rivers. May sampling in the St. Croix River showed silver carp eDNA about four miles north of where invasive carp have been confirmed in the St. Croix. eDNA is DNA released from an organism into the environment that is detectable at very low concentrations.
Invasive carp captures must be reported to the DNR immediately by calling 651-587-2781 or emailing firstname.lastname@example.org. Take a photo and transport the carp to the nearest DNR fisheries office or make arrangements for it to be picked up by a DNR official. Do not release captured invasive carp. A permit can be requested to keep captured invasive carp for consumption or disposal.