Study: Asian carp DNA may not signal live fish

Feb 20, 2013 by John Flesher

(AP)—A new government study says live Asian carp don't have to be present for their DNA to turn up in the environment.

The report released Wednesday by three federal agencies identifies six other ways that genetic material from bighead and silver carp might have reached waterways in the Chicago area and western Lake Erie.

It says the DNA may have come from , fisheries sampling gear, fish-eating birds, dead fish carcasses, barges and sediments. The report says carp DNA from those sources could remain in place for several days.

DNA has been found in dozens of water samples beyond an electric barrier meant to prevent the invasive fish from reaching the Great Lakes, where scientists say they could destabilize ecosystems and out-compete for food.

Explore further: The right amount of grazing builds diverse forest ecosystems

not rated yet
add to favorites email to friend print save as pdf

Related Stories

Illinois to poison canal in hopes of killing invasive carp

Dec 02, 2009

The largest fish kill in Illinois history -- expected to net 100 tons of fish including, hopefully, some Asian carp -- is to start Wednesday south of Chicago in an attempt to make sure none of the feared carp make it past ...

Wildlife officials search for carp in Chicago area

Feb 17, 2010

(AP) -- Armed with sprawling fishing nets and boats equipped with electric prods, state and federal fisheries biologists began a "search-and-destroy" mission in Chicago-area waterways Wednesday aimed at rooting out the dreaded ...

No Asian carp found yet in Ill. fish kill

Dec 03, 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

Seeds keep vital much longer when stored without oxygen

15 hours ago

If seed breeding companies, gene banks and the Svalbard Global Seed Vault on Spitsbergen should store plant seeds under oxygen-poor conditions, it would be possible to store them for much longer while still ...

Native species may be hindering fox control efforts

15 hours ago

Native species interfering with ground distributed baits used to control red foxes in south west Western Australia may mean the baits are not available to the target species, a Murdoch University study has ...

Giant anteaters kill two hunters in Brazil

Jul 26, 2014

Giant anteaters in Brazil have killed two hunters in separate incidents, raising concerns about the animals' loss of habitat and the growing risk of dangerous encounters with people, researchers said.

User comments : 0