Prevention is the first line of defense against aquatic nuisance species and the most cost-effective means to avert the risk of harmful introductions. Investment in prevention avoids many of the long-term economic, environmental, and social costs associated with ANS. New species can arrive through many different ways, but most species that are considered to be invasive are a direct result of human activity.
Common pathways for ANS introduction include:
Ballast water operations
Biofouling of ship hulls
Transport on watercraft, fishing gear, and other recreational equipment
Escape from aquaculture facilities
Escape from nurseries and water gardens
Intentionally stocked as food or recreational sources
Intentional release of unwanted pets
Use of non-native species for habitat restoration or erosion control efforts
Accidental or intentional release of classroom and laboratory animals
Fishing bait release
Long-term success in prevention will reduce the rate of introductions, the rate of establishment, and the damage from additional aquatic nuisance species. Below are key resources developed by the Aquatic Nuisance Species Task Force, its members, regional panels, or subcommittees to prevent the introduction or spread of aquatic nuisance species:
Pathway Definition, Risk Analysis and Risk Prioritization - Training and Implementation Guide (2007)
National Ballast Information Clearinghouse - a joint program of the Smithsonian Environmental Research Center (SERC) and the United States Coast Guard that collects, analyzes, and interprets data on the ballast water management practices of commercial ships operating in the waters of the United States.
Hazard Analysis and Critical Control Point (HACCP)
HACCP Training. Planning to Prevent the Spread of Invasive Species, HACCP is five-step planning process that manages the risk of moving potentially invasive species during natural resource management or research activities. HACCP Training Manual
You are exiting the U.S. Fish and Wildlife Service website
You are being directed to
We do not guarantee that the websites we link to comply with Section 508 (Accessibility Requirements) of the Rehabilitation Act. Links also do not constitute endorsement, recommendation, or favoring by the U.S. Fish and Wildlife Service.