The looming threat of Asian carp entering the Great Lakes weighs heavy on anglers, recreational lakers, tourism officials and millions of people in industries that rely on the lakes for their livelihoods. He traveled to Bismarck, North Dakota recently to offer up-to-date information on Asian carp developments. Of the four types of Asian carp, bighead, silver, black and grass, three remain sequestered. Only the grass carp, which eats a whole lot of vegetation, is currently found in the lakes. A number of state and federal agencies, including those from Canada, are currently addressing the grass carp issue.
Asian Carp Overview
Building wall would curb Asian carp threat | Toledo Blade
Several species of heavy-bodied cyprinid fishes are collectively known in the United States as Asian carp. Cyprinids from the Indian subcontinent—for example, catla Catla catla and mrigal Cirrhinus cirrhosus —are not included in this classification and are known collectively as "Indian carp". All the above, except largescale silver carp, have been cultivated in aquaculture in China for over 1, years. Largescale silver carp, a more southern species, is native to Vietnam and is cultivated there.
Asian Carp Threat to the Great Lakes
Over time, the Great Lakes have accumulated over aquatic non-native species. However, many species were introduced unintentionally through the transfer of live food fish, bait release, or the release of ballast water. Some species are disruptive because on their eating habits, rate of reproduction, and adaptability among other factors. These invasive species pose a threat to existing ecosystems and also to the economies of the region. The Great Lakes Basin is the largest source of freshwater in the world.
Five states failed to secure an injunction that would close shipping locks in an attempt to prevent Asian carp from entering the Great Lakes. What's so bad about Asian carp? February 27, The US Supreme Court has refused to hear the Great Lakes states' appeal to close shipping locks to stymie the on-going incursion of Asian carp.