Asian Carp still thriving in U.S. river

July 6, 2006

Scientists had some disappointing news this week for Illinois residents: Asian carp are still thriving in the Illinois River and are not dying from a virus.

There had been speculation a virus was responsible for a large fish kill near Peoria in late May, the Springfield (Ill.) State Journal Register reported Thursday. But microbiologists this week said tests indicate the fish died when they were stressed. That caused their immune systems to fail and they were then susceptible to bacteria.

"The densities (of Asian carp) are getting very high, and that can be a source of stress," Larry Willis, a microbiologist with the fish pathology lab at the Jake Wolf Fish Hatchery near Manito, Ill., told the newspaper.

The Asian carp were brought to the United States from China more than 10 years ago to help keep fish-rearing ponds clean, but subsequently escaped during flooding in the southern United States, the State Journal Register said.

Carp are filter feeders, consuming up to 40 percent of their body weight daily in plankton, microscopic plants and animals. Some scientists speculate increasing competition for food might be causing stress in the carp population.

Copyright 2006 by United Press International

Explore further: Researchers develop fast test for invasive carp

Related Stories

Researchers develop fast test for invasive carp

August 11, 2015

A Case Western Reserve University graduate student turned a research paper into a field test that quickly determines whether an Asian carp invading Lake Erie is sterile or can reproduce.

Researchers seek water test for invasive species detection

July 7, 2015

Detecting invasive lake and river species using just a water sample would be a dream come true for wildlife managers and regulators in the state. And University of Maine researchers may soon make this an inexpensive reality.

'Judas' fish could help wipe out Asian carp

January 18, 2013

Methods used to eradicate feral pigs and goats in Hawaii, Australia, the Galapagos Islands and southern United States could be employed in Minnesota to fight the Asian carp invasion.

No Asian carp found yet in Ill. fish kill

December 3, 2009

(AP) -- No Asian carp have been spotted so far in a Chicago canal during a massive fish kill aimed at trying to keep the giant fish out of the Great Lakes.

Recommended for you

Interactive tool lifts veil on the cost of nuclear energy

August 24, 2015

Despite the ever-changing landscape of energy economics, subject to the influence of new technologies and geopolitics, a new tool promises to root discussions about the cost of nuclear energy in hard evidence rather than ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.