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IUCN has launched a global standard for classifying the severity and type of impacts caused by alien species, known as the Environmental Impact Classification for Alien Taxa (EICAT). This tool will alert scientists, conservation practitioners and policy makers to the potential consequences of invasive alien species, guiding the development of prevention and mitigation measures.

The Joro spider, native from Japan, first arrived stateside around 2013 and has since spread across the state and Southeast. But new research from the University of Georgia suggests the invasive arachnids could spread through most of the Eastern Seaboard of the U.S. Joros don't appear to have much of an effect on local food webs or ecosystems, said Andy Davis, corresponding author of the study and a research scientist in the Odum School of Ecology. They may even serve as an additional food source for native predators like birds.
See also: Like it or not, Joro spiders are here to stay (News - Oct 26, 2020)

Aquatic invasive species (AIS) personnel from the Utah Department of Natural Resources (DNR) have stopped more than 120 mussel-infested boats this year, most of which had visited Lake Powell, from launching at other Utah waterbodies. So far in 2018, more than 100 mussel-infested boats have been quarantined, a significant increase compared to recent years. "The quagga situation at Lake Powell has worsened. If you boat at Lake Powell it's very likely your boat has quagga mussels on it," said AIS Program Coordinator Nathan Owens. "With more mussels in the lake and lower water levels more boaters have mussels attached to their vessels than in past years. Our techs are regularly finding them on and in boats that have only been in Lake Powell for a day or two — something we haven't experienced in the past." Boaters that visit another lake or reservoir after visiting Lake Powell will have their boat inspected again. If mussels are found the boat will be decontaminated and quarantined, if necessary.

The Centre for Agriculture and Biosciences International (CABI) has published one of the most complete and current datasets on Invasive Alien Plants (IAP) in East and Southern Africa. This extraordinary dataset, (CABI's Africa Invasive and Alien Species data), is already being translated into new research findings and conservation action on the ground.

The Lionfish Challenge is a free summer-long (May 24-September 2, 2024) lionfish tournament open to recreational and commercial competitors of all ages around the state of Florida. Our goal remains the same — remove as many lionfish as we can in just four months. Are you up for the Challenge? See also:

• FWC Announces 2024 Lionfish Challenge Presented by Zookeeper (May 23, 2024)
• Lionfish Tournaments and Events
• FWC Unveils 2023 Lionfish Challenge King and Commercial Champion, Celebrating a Record-breaking Year (Oct 19, 2023)

In early December Washington Department of Fish and Wildlife (WDFW) Police received information that a Seattle market was selling live “green crabs”. The Seattle seller had bought the live green crabs from a seller in Massachusetts with the intention of selling them for crab stock and soup. The crabs were destroyed by WDFW Police officers.

In celebration of World Fisheries Day, the Manitoba government has launched a new, interactive website called Lake Information for Anglers, Agriculture and Resource Development Minister Blaine Pedersen announced today. The new, interactive website provides valuable information in an easily accessible format to assist anglers in planning their next fishing trip. The site is home to information about fishing divisions, lake contour maps, fisheries assessment summaries, aquatic invasive species and boat launches for numerous drive-to lakes in Manitoba. The new Lake Information for Anglers website can be seen at www.manitobafisheries.com.

A new study led by the Institut de Ciències del Mar (ICM-CSIC) and the University of Barcelona (UB) has revealed that marine plastic pollution could contribute to the introduction and transport of non-native species that attach to these particles of anthropogenic origin.

The Florida Fish and Wildlife Conservation Commission (FWC) is excited to announce the 7th annual Lionfish Removal and Awareness Festival May 15 and 16 at AJ’s Seafood and Oyster Bar and HarborWalk Village in Destin. Come out and celebrate the fight against invasive lionfish with the FWC and Destin–Fort Walton Beach. Activities will include fillet demonstrations; family-friendly games and activities; art, diving and conservation booths; and the world’s largest lionfish spearfishing tournament, the Emerald Coast Open. Learn more by visiting FWCReefRangers.com. The 2021 Lionfish Challenge removal incentive program will begin May 21 and continue through Labor Day, Sept. 6. More details on how to get rewarded for your harvest coming soon to FWCReefRangers.com.

The Maryland Department of Agriculture expanded its spotted lanternfly quarantine to include a total of 17 counties and the city of Baltimore. The quarantine is effective immediately, and restricts the movement of regulated materials that might contain the spotted lanternfly in any of its life stages, including egg masses, nymphs, and adults. 

The Maryland Department of Agriculture has taken a significant step in its ongoing efforts to control the invasive spotted lanternfly. The department has announced the expansion of its spotted lanternfly quarantine zone to include two new counties – Charles and Garrett – effective immediately. This quarantine restricts the movement of regulated articles that might contain the spotted lanternfly in any of its life stages, including egg masses, nymphs, and adults.

Governor Wes Moore is calling on the federal government to declare the expanding population of invasive fish species—including blue catfish, flathead catfish, and snakehead—to be an ongoing commercial fishery disaster in the Maryland waters of the Chesapeake Bay. The governor sent a letter [Mar 2023; PDF, 2.4 MB] to U.S. Commerce Secretary Gina Raimondo requesting the declaration under provisions of the Magnuson-Stevens Fishery Conservation and Management Act and the Interjurisdictional Fisheries Act. The declaration would qualify Maryland for federal fishery disaster assistance.

The Massachusetts Department of Agricultural Resources (MDAR) today announced that it has identified two dead specimens of the spotted lanternfly (SLF) in Massachusetts communities, and is urging residents to report any sign of the invasive pest. The specimens were recovered in the towns of Milford and Norwood, and were brought into Massachusetts on materials shipped from Pennsylvania counties currently under a spotted lanternfly quarantine. Additionally, MDAR was recently notified that nursery stock with spotted lanternfly egg masses and adults may have been unintentionally imported and planted in several parts of Massachusetts.

MDAR is urging anyone who has received goods or materials, such as plants, landscaping materials, or outdoor furniture, from a state with a known SLF infestation to carefully check the materials, including any packaging, for signs of spotted lanternfly. Currently, there are known introductions of SLF in Connecticut, Delaware, Maryland, New Jersey, New York, Pennsylvania, Virginia, and West Virginia. If any indication of SLF is found, residents should take a photo or collect the specimen, and report any potential sightings of the pest using MDAR’s online reporting form. Residents should look for large, gray insects, about one inch long, with black spots and red underwings, or inch-long, rectangular yellowish-brown egg masses covered with a gray waxy coating.

The Michigan Department of Agriculture and Rural Development (MDARD) is proposing an Exterior Firewood Quarantine [PDF, 192 KB] to prevent the introduction of unwanted plant pests and diseases into Michigan. Public comments on the proposal were due on November 19, 2021. Over 140 pests and diseases can be moved by firewood, including Asian long-horned beetle, mountain pine beetle and spotted lanternfly. These pests are not known to exist in Michigan but could be accidentally brought into the state by travelers transporting firewood. Additional information is available at Michigan Invasive Species Program.

Missouri Department of Conservation (MDC) fisheries biologists say that the Show-Me-State has another aquatic invader to be on the watch for. It's already been detected in the Mississippi River near St. Louis—and anglers might be the first line of defense. The round goby (Neogobius melanostomus) is native to the Black and Caspian Seas between Europe and Asia and was brought to the U.S. by way of the Great Lakes in cargo ship ballast. Since then, the invasive fish has made its way down the Illinois River and has been confirmed just across the Mississippi at Alton, Illinois. MDC encourages anglers to take photos and email MDC with details if they encounter any round gobies. Anglers should report the sighting and email photos to MDCgoby@mdc.mo.gov.

A portion of Los Angeles County has been placed under quarantine for the Mediterranean fruit fly following the detection of two wild flies in the Leimert Park neighborhood in the City of Los Angeles. The USDA, the Los Angeles County Agricultural Commissioner, and California Department of Agriculture are working collaboratively on this project.

Under International Plant Protection Convention (IPPC) standards, Ceratitis capitata  is a transient pest under eradication that is present only in one area in California.  This species is not widely distributed and is under official control in the U.S.

Advanced tools help our scientists detect native and invasive species in Lake Ontario and the St. Lawrence River.

A portion of San Diego County has been placed under quarantine for the Mexican fruit fly following the detection of six flies and one larva in and around the unincorporated area of Valley Center. The United States Department of Agriculture (USDA), the San Diego County Agricultural Commissioner, and the California Department of Food and Agriculture (CDFA) are working collaboratively on this project.

The Mexican fruit fly can lay its eggs in and infest more than 50 types of fruits and vegetables, severely impacting California agricultural exports and backyard gardens alike. For more information on the pest, please see the pest profile at: www.cdfa.ca.gov/plant/go/MexFly. Residents who believe their fruits and vegetables may be infested with fruit fly larvae are encouraged to call the state’s toll-free Pest Hotline at 1-800-491-1899.

The governors of Illinois and Michigan today agreed to work jointly to protect the Great Lakes from invasive Asian carp species. Gov. Gretchen Whitmer and Gov. JB Pritzker today announced an intergovernmental agreement between the Illinois Department of Natural Resources (IDNR) and the Michigan Department of Natural Resources (MDNR) which allows Illinois to use up to $8 million in funds appropriated in 2018 by the Michigan Legislature to support the pre-construction engineering and design (PED) phase of the Brandon Road Ecosystem Project. Further strengthening the path forward, the State of Illinois also signed a separate PED agreement with the U.S. Army Corps of Engineers for the initial Brandon Road design. The state will serve as the non-federal sponsor, agreeing to help fund design of a portion of the project and to further advance full project design efforts to approximately 30 percent completion.

The Brandon Road Lock and Dam in the Chicago Area Waterway System near Joliet, Illinois, is a critical pinch point for keeping bighead, silver and black carp – the invasive Asian carp species of greatest concern – out of the Great Lakes. The Brandon Road project would install layered technologies including an electric barrier, underwater sound, an air bubble curtain and a flushing lock in a newly engineered channel designed to prevent invasive carp movement while allowing barge passage.

The Minnesota Department of Natural Resources has classified 13 high-risk invasive aquatic plants, fish and invertebrates as prohibited invasive species. The DNR classifies invasive species as prohibited to prevent their introduction and spread in Minnesota and to protect the state’s environment, economy, natural resources and outdoor recreation. It is unlawful to possess, import, purchase, transport or introduce prohibited invasive species, except under a DNR-issued permit for disposal, decontamination, control, research or education.

The prohibition on 12 of the 13 species is effective immediately, with publication of the new listings in today’s State Register. Jumping worms will be prohibited invasive species effective July 1, 2024, to provide additional time for outreach to businesses and others who may be impacted by the rule change. A complete list is available on the DNR invasive species laws website.