The ongoing roundup on wind-rippled Kentucky Lake opens a new front in a year battle to halt the advance of the invasive carp, which threaten to upend aquatic ecosystems, starve out native fish and wipe out endangered mussel and snail populations along the Mississippi River and dozens of tributaries. Programs are designed to reduce established populations and prevent further spreading, but wildlife officials concede they may never be able to eradicate the prolific fish. That effort features an underwater electric barrier near Chicago, water sampling for carp DNA, subsidies for commercial fishers and experiments with a mass roundup-type harvest. It has been largely successful, although the lakes remain vulnerable and grass carp — one of the Asian varieties — were spotted in lakes Erie, Ontario and Michigan. Asian carp were imported to the U. They escaped through flooding, deliberate stocking and other means.
New method aims to herd, capture invasive carp in Mississippi River
Asian Carp Control | U.S. Department of the Interior
Like all great supervillains , the Asian carp have their origin story. Since then the Asian carp have been making their way north towards the Great Lakes—and being the marine equivalent of vacuum cleaners, they could sweep the lakes clean of other life forms if they manage to gain a finhold. And in the meantime, they do this:. The government is spending tens of millions of dollars to prevent the carp from being the latest alien species to invade the Great Lakes.
Yale Daily News
The Asian carp has gobbled up headlines as it makes its way toward the Great Lakes. Six frequently asked questions about the invasive species of fish. March 16, The Asian carp's presence is highly contentious in the Midwest, with ramifications that could affect the economy as well as the environment. Here's a primer on the Asian carp and why this invasive species poses such a threat to the Great Lakes ecosystem.
Adams, of Wabasha, Minn. He's worried that invasive carp will crowd out native species. Ben Larson of the Minnesota Department of Natural Resources brings a bottom rope from a commercial fishing net to the collection boat. Last week, Adams joined a team of biologists and technicians from state and federal agencies in an operation to capture and harvest invasive carp from this stretch of the Mississippi River known as Pool 8, on the border of Minnesota and Wisconsin. It was part scientific survey, part defensive battle against a notorious aquatic invader that has been steadily progressing up the Mississippi.