California Academy of Sciences.

Pacific Pests, Pathogens, & Weeds - Coconut Rhinoceros Beetle

Australian Plant Biosecurity Cooperative Research Centre. Pests and Diseases Image Library.

Australian Plant Biosecurity Cooperative Research Centre. Pests and Diseases Image Library.

Pennsylvania Fish and Boat Commission.

Recent surveys by the PFBC and partner organizations have detected New Zealand mudsnails, roughly the size of a match head, in several popular cold-water trout fisheries in central and eastern Pennsylvania. In some infested waters, New Zealand Mudsnails have the potential to reach densities of hundreds or even thousands of snails per square foot. These snails are not harmful to humans but can compete with and negatively impact native freshwater invertebrate species, such as other snails and aquatic insects.

Until recently, New Zealand Mudsnails were known to occur only in Lake Erie, Erie County; Spring Creek and Bald Eagle Creek, Centre County; and the Little Lehigh Creek in Lehigh and Berks counties. Surveys during 2020 revealed populations of snails in Trindle Spring Run, Cumberland County; Codorus Creek, York County; and Valley Creek, Chester County; prompting expanded surveys. Members of the public who observe suspected New Zealand Mudsnails or other aquatic invasive species can report sightings of aquatic invasive species to the PFBC using its online form.

Department for Environment Food and Rural Affairs (United Kingdom).

See also: Pest and Disease Factsheets for more fact sheets.

CABI. PlantwisePlus Knowledge Bank.

Rhode Island Department of Environmental Management. Office of Water Resources.

See also: Aquatic Invasive Animals for species of concern

USDA. NAL. National Invasive Species Information Center.

Watercraft Inspection and Decontamination Programs - Many Western states instituted watercraft inspection and decontamination programs after the discovery of invasive mussels in Lake Mead in 2007. This section provides resources on mandated watercraft inspection and decontamination programs, as well as some non-mandated but state-funded watercraft inspection efforts.

Aquatic Invasive Species Decals - Some U.S. states require that boaters purchase an aquatic invasive species decal (sometimes called a stamp, sticker, or permit) before operating watercraft in that state. Many of these regulations were instituted as a response to the spread of zebra mussels and quagga mussels into the Western U.S. Fees from the purchase of these decals are typically used to fund local aquatic invasive species outreach and prevention activities.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

Montana Fish, Wildlife, and Parks.

Following the detection of invasive aquatic mussel larvae in Nov 2016, the State of Montana's Mussel Response Team was formed to rapidly assess the extent and severity of the mussel incident impacting Montana's waterways. Aquatic invasive species (AIS), including diseases, are easily spread from one water body to the other. To protect Montana’s waters and native aquatic species, please follow the rules and guidelines... clean, drain, dry.

Wyoming Game & Fish Department.

Anglers, crayfish trappers, and other outdoor recreationists are asked to help the Wyoming Game and Fish Department protect our outstanding fisheries by reporting any rusty crayfish found in the Laramie River watershed. Rusty crayfish (Orconectes rusticus) are native to the Ohio River Basin, but have invaded many other states and Canadian provinces. They were first discovered in Wyoming in 2006 after being illegally introduced into private ponds and then escaping into Wagonhound Creek, a tributary of the North Platte River. Despite the Game and Fish Department’s early eradication efforts, the species has recently been found in the Laramie River as a result of another illegal introduction.

Rusty crayfish are 3-5 inches long, with a grayish-green body and easily-identifiable reddish fingerprint-like spots on each side of the body just in front of the tail. If you find a rusty crayfish, or catch one in a trap, take a photo of it and either return it to the water or kill it. Then contact the Laramie Game and Fish Department at (307) 745-4046 or reportais@wyo.gov.

University of California - Riverside. Center for Invasive Species Research.

DOI. Bureau of Reclamation. 

California Department of Fish and Game.