Carp Invasion

In this Feb. 11, 2020, photo, Asian carp are unloaded at Two Rivers Fisheries in Wickliffe, Ky. Asian carp were imported to the U.S. in the 1960s and 1970s as an eco-friendly alternative to poisons for ridding southern fish farms and sewage lagoons of algae, weeds and parasites. The advance of the invasive carp, however, threatens to upend aquatic ecosystems, starve out native fish and wipe out endangered mussel and snail populations along the Mississippi River and dozens of tributaries. (AP Photo/Mark Humphrey)

By TRAVIS LOLLER

and JOHN FLESHER

Associated Press

GOLDEN POND, Ky. — Like a slow-motion, underwater cattle drive, wildlife officials in a half-dozen aluminum boats used pulses of electricity and sound on a recent gray morning to herd schools of Asian carp toward 1,000-foot-long nets.

The ongoing roundup on wind-rippled Kentucky Lake opens a new front in a 15-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.

State and federal agencies together have spent roughly $607 million to stop them since 2004, according to data compiled by The Associated Press. Projects in the works are expected to push the price tag to about $1.5 billion over the next decade.

That’s more than five times the amount predicted in 2007 when a national carp management plan was crafted, and no end is in sight. Programs aim to reduce established populations and prevent further spreading, but wildlife officials concede they may never be able to eradicate the prolific fish.

Much of the focus has been on limiting their northerly migration and keeping them out of the Great Lakes, where experts say they could devastate a $7 billion fishing industry. 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 — have been spotted in Lakes Erie, Ontario and Michigan.

Less money and attention have been paid to the carp’s virtually unchecked spread east and west into the Missouri and Ohio rivers, among others.

Asian carp were imported to the U.S. in the 1960s and 1970s as an eco-friendly alternative to poisons for ridding southern fish farms and sewage lagoons of algae, weeds and parasites. They escaped through flooding, deliberate stocking and other means.

“It was a dumb idea,” said Joel Brammeier, president of the advocacy group Alliance for the Great Lakes. “Even back then, biologists understood the risks of bringing live, non-native animals into the country. It should never have happened.”

(0) comments

Welcome to the discussion.

Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language.
PLEASE TURN OFF YOUR CAPS LOCK.
Don't Threaten. Threats of harming another person will not be tolerated.
Be Truthful. Don't knowingly lie about anyone or anything.
Be Nice. No racism, sexism or any sort of -ism that is degrading to another person.
Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts.
Share with Us. We'd love to hear eyewitness accounts, the history behind an article.