CHICAGO (WTAQ) - Just because an Asian carp’s DNA shows up someplace does not mean that the bloated fish had been there.
That’s according to a new study by the U.S. Army Corps of Engineers.
In Lake Michigan, the DNA was spotted a number of times past the electronic barrier near Chicago that’s supposed to keep the invasive carp out of the Great Lakes. And that has raised the concern of Wisconsin officials and others who are fighting to keep the carp out of Lake Michigan, and preserve the lake’s multi-billion dollar fishing industry.
But the Corps says there are 6 other ways that the carp’s genetic fingerprints can be laid down despite the actual fish leaving its fingerprint.
Fish-eating birds can leave an Asian Carp’s DNA – along with dead fish carcasses, barges, sediments, storm sewer material, and sampling gear from fisheries.
Corps biologist Kelly Baerwaldt said the purpose of the study was to improve the understanding of DNA discoveries, in order to improve the detection of actual live Asian carp.
Officials say the study will continue, and more reports will be issued.