An official website of the United States government.
An interactive story map of the USDA's history of eradicating the infestation and the continuing efforts to keep screwworm out of the US.
Invasive Species Resources
Provides access to all site resources, with the option to search by species common and scientific names. Resources can be filtered by Subject, Resource Type, Location, or Source.
Displaying 1 to 7 of 7
Search HelpUniversity of Delaware. Delaware Sea Grant College Program.
See also: Delaware's Invasive Crabs for more story maps
University of Delaware. Delaware Sea Grant College Program.
See also: Delaware's Invasive Crabs for more story maps
University of Delaware. Delaware Sea Grant College Program.
See also: Delaware's Invasive Crabs for more story maps
USDA. Animal and Plant Health Inspection Service.
Ticks may not seem dangerous, but they can cause disease and even death in livestock and pets. There are hundreds of tick species in the world, about 10 percent of these species are found in the United States. Now there’s one more to watch out for. In 2017, the U.S. Department of Agriculture (USDA) confirmed the presence of the Asian longhorned tick (Haemaphysalis longicornis). It probably arrived in the United States in or before 2010. Exactly how or when is unknown, but one thing is certain: it may have entered on domestic pets, horses, livestock or people. While we know the impact of this tick in other parts of the world, we are still studying how they may affect U.S. agriculture, and our environment.
USDA. Animal and Plant Health Inspection Service.
An interactive story map of the USDA’s history of combating the infestation and the continuing efforts to protect ash trees in the U.S.