Grass carp are famous for their insatiable appetite for aquatic plants. Archived from the original on 3 August Archived from the original on 25 December Instead, they were hoping "to get some background on other fish before Asian carp began invading. In China, black carp are considered one of the most desirable food fish and have been cultured for at least 1, Goss was previously executive director of the Indiana Wildlife Federation a state affiliate of the National Wildlife Federation , director of the Indiana Department of Natural Resources , and vice-chairman of the Great Lakes Commission. These invasive species pose a threat to existing ecosystems and also to the economies of the region.
Invasive Asian carp found near Great Lakes beyond electrified barrier
Policies and laws that govern Asian carps in their native range are unknown. Some species are disruptive because on their eating habits, rate of reproduction, and adaptability among other factors. It is being used as a basis to take aggressive management actions, despite the capture of only one live Asian carp above the electric barrier. Introduced in the southeast to help control weeds and parasites in aquaculture operations, these fish soon spread up the Mississippi River system where they have been crowding out native fish populations not used to competing with such aggressive invaders. This page was last edited on 8 March , at
First evidence of invasive Asian carp reproducing in Great Lakes | Ars Technica
Various governments and environmental groups are working to educate fishermen on the species, although it is nearly impossible to prevent accidental introduction through the use of live baitfish. Their pharyngeal teeth are adapted to eating aquatic vegetation. Flooding can spread these fish as well, because flooding can connect water bodies that aren't normally connected. When the amount of plants, mussels, and plankton are lower in our lakes and rivers, the ecosystem becomes unbalanced and our native species that depend on these food sources suffer. Black carp were accidentally introduced in the s as a contaminant in a grass carp shipment. Given this rich history of breeding, trading, and transporting, it is not surprising carps have escaped to the wild in every state in the United States except Alaska.
They soon began to escape and establish themselves in the Mississippi River. They plan to conduct more intensive sampling during the next two weeks on both sides of the T. It is difficult to know exactly how and to what extent an Asian carp invasion will disrupt existing ecosystems. No silver carp or black carp have yet been found in any Great Lake. Neighboring Great Lakes states and the U.