Mar 27, 2012 6:30 AM by AP
SPRING BAYOU, La. (AP) - State biologists say they are fighting hydrilla, an invasive aquatic weed that grows into dense mats near the surface of water, in this bayou in Avoyelles Parish.
The Louisiana Department of Wildlife and Fisheries says it is fighting the fast-growing plant by stocking the bayou with grass carp, which feed on the weed.
More than 21,000 carp were stocked in the bayou in 2008 and in 2011. State biologists say the carp are growing well and eating a lot of the hydrilla. The genetically modified carp are sterile and unable to reproduce.
Hydrilla is a native plant of Asia and labeled a federal noxious weed.
Officials also say they may use water drawdowns and herbicides to fight the weed.