Asian carb brought to america
Want to discuss? Please read our Commenting Policy first. As Canadian and American authorities race to stop the northward march of the Asian carp, Global News looks back at the history of the foreign fish in North America. The filter-feeding carp were ideal for keeping the farms clean.
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Dear EarthTalk : What exactly are Asian carp, and why are they such a big problem lately? 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. Asian carp are hardy, lay hundreds of thousands of eggs at a time and spread into new habitat quickly and easily. To wit, they can jump over barriers such as low dams. Also, flooding has helped the fish expand into previously unattainable water bodies. Federal and state governments have spent millions in tax dollars accordingly to prevent the carp from making their way into the Great Lakes, but an elaborate underwater electric fence constructed to keep them out has not worked as well as hoped, and policymakers are reviewing other options now. In the states of Michigan, Minnesota, Ohio, Pennsylvania and Wisconsin filed suit in federal court against the U.
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Introduced Asian carp in North America pose a major threat to the ecology, environment, economy, and way of life in the Upper Midwest and Great Lakes region of the United States and Canada. Asian carp are a group of fish species, which include several known to be invasive , and represent the most urgent potential danger to the ecology of the Great Lakes. The group of fish species known in the United States as Asian carp include several which are invasive. These species of carp cause harm when they are introduced to new environments. Specifically, the four most well-known species of invasive Asian carp are bighead , silver , black , and grass carp.
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