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The Lionfish Challenge 2022, the seventh annual, is a summer-long tournament that rewards divers for their lionfish harvests. The tournament boasted a total of 707 registered participants, the most in the program’s history. 196 divers conducted a total of 676 trips throughout the state during the 3-month tournament and brought in a whopping 25,299 lionfish.

The widely cited “tens rule” in invasion ecology suggests that approximately 10% of established, non-native species will become invasive–or display negative impacts—when introduced to new environments. This study demonstrates that the tens rule is a poor estimate of invasion rates on a global scale. Instead, a ‘twenties rule’ is a better rule of thumb, meaning that roughly 20% of all established, non-native species eventually become invasive

The Department of Environmental Management (DEM) is asking Rhode Islanders to monitor their beech trees for signs of leaf damage from Beach Leaf Disease (BLD). Early symptoms of BLD include dark striping on the tree's leaves parallel to the leaf veins and are best seen by looking upward into the backlit canopy. Drastic leaf loss occurs for heavily symptomatic leaves during the growing season and may appear as early as June, while asymptomatic and mildly symptomatic leaves show no or minimal leaf loss. BLD was detected in the Ashaway area of Hopkinton, Rhode Island, in 2020 and in coastal Massachusetts. Before these findings, the disease was only known to be in Ohio, Pennsylvania, New York, and Connecticut.

Because of the seemingly random nature of disease in Rhode Island, DEM encourages homeowners and forest landowners to monitor their beech trees and report any suspected cases of BLD on DEM's Invasive Species Sighting Report webpage. Although BLD is relatively new in the U.S. and information is limited, links to additional information about the disease and photos are posted on the Division of Forest Environment's Current Threats page. If people have further questions, they should contact a licensed arborist or email Nancy Stairs, forestry program supervisor in DEM's Division of Forest Environment, via Nancy.Stairs@dem.ri.gov.

South Carolina Department of Natural Resources officials are warning anglers that if the invasive Northern snakehead fish is caught in the Palmetto State, anglers should kill it immediately and by all means NOT release it back into the water. In early October, a Georgia angler reported catching a Northern snakehead, an aquatic invasive species, in a pond located on private property in Gwinnett County, Ga. This is the first time the Northern snakehead has been confirmed in Georgia waters. In the Southeast, Northern snakeheads have also been found in North Carolina and Florida. If you believe you have caught a Northern snakehead:

• DO NOT RELEASE IT
• Kill it immediately (remember, it can survive on land) and freeze it.
• If possible, take pictures of the fish, including closeups of its mouth, fins and tail.
• Note where it was caught (waterbody, landmarks or GPS coordinates).
• Report it to the SCDNR by calling 1-800-922-5431.

The Port of San Diego, along with the Southern California Caulerpa Action Team (SCCAT), the City of Coronado, and the Coronado Cays Homeowners Association (CCHOA), are responding to the discovery of an invasive seaweed scientifically known as Caulerpa prolifera in the Coronado Cays area of San Diego Bay.

In late September, divers found a small patch of Caulerpa prolifera while conducting an in-water pre-construction eelgrass/Caulerpa dive survey as a permit condition for a dock replacement project. Additional patches were discovered nearby during follow-up surveys. The total find within the Cays is about one-quarter of an acre. The SCCAT has prepared a Rapid Response Eradication Plan to address the immediate need to eradicate this invasive species.

Today, Environment Minister Dustin Duncan introduced the Government of Saskatchewan’s new Aquatic Invasive Species Strategy during an address to the Saskatchewan Wildlife Federation’s (SWF) annual convention in Weyburn. The new framework is designed to help the province prevent, address and manage aquatic invasive species (AIS) threats. The ministry and the SWF are partners on the province’s AIS Task Force – which focuses on additional education and monitoring activities – along with other government agencies, conservation groups, non-government organizations and universities. "This strategy emphasizes the need for collaboration and co-ordination with provincial and federal government agencies, non-government organizations and neighbouring jurisdictions to prevent the introduction and spread of high-risk aquatic invasive species," Duncan said. 
See also: Aquatic Invasive Species Strategy for information about AIS and fishing

ITP is pleased to announce that Sawfly GenUS is now complete. Developed in cooperation with the Washington State Department of Agriculture, Sawfly GenUS is an interactive identification tool for all sawfly genera found in the United States and Canada. This tool is intended to help recognize exotic sawfly introductions and provide access to general information on affected plants, range, and diversity of these insects. This tool should be useful for port identifiers and screeners, provincial and state departments of agriculture, university extension professionals, and any non-expert with an interest in sawflies.

For more than 30 years, the U.S. Fish and Wildlife Service has worked with Vermont and New York to control this invasive species and protect Lake Champlain. Fortunately, sea lamprey woundings are now at an all-time low.

The plot could have come from Hollywood — an insidious alien invader threatens to overrun the land, but intrepid scientists discover a secret weapon in the far-off, exotic land of Nepal and bring the pestilence to heel. But this is not fiction; it's true. The air potato plant (Dioscorea bulbifera) is an exotic vine from Asia that was introduced to Florida about 115 years ago to make medicine. After escaping from the lab, it multiplied and smothered native plant communities in all of Florida's 67 counties. It spread beyond to large swaths of land in the southeastern United States. All attempts to manage the air potato – mechanical, chemical, or physically gathering the bulbils — were unsuccessful; they were either too labor intensive and costly or caused collateral damage to native and endangered species. According to Min Rayamajhi, a plant pathologist at the Agricultural Research Service's (ARS) Invasive Plant Research Laboratory (IPRL) in Fort Lauderdale, FL, the vines return every season, repeating the growth cycle and expanding the invasion at a rate of about 6 inches per day. Rayamajhi and retired ARS scientist Bob Pemberton traveled to Nepal and accidentally discovered the air potato beetle.

Biologists from the U.S. Geological Survey are racing the clock to pull four species of native Hawaiian Honeycreeper forest birds back from the brink of extinction. Factors such as habitat loss, invasive species, and non-native predators have been fueling the birds' decline for centuries. However, introduced diseases, particularly avian malaria spread through mosquitos, which are not native to the Hawaiian Islands, coupled with climate change, are the greatest threat facing Hawaiian forest birds today. 

"As the climate warms and more mosquitoes move into the once malaria-free regions of the mountains, healthy birds are running out of places to escape the cycle of infection," said Eben Paxton, a research ecologist with the USGS Pacific Island Ecosystems Research Center (PIERC) in Hawai'i. Now, PIERC biologists are working with a range of partners, including other Interior Department bureaus and the Birds Not Mosquitos Coalition, to intercept the disease cycle using a novel conservation tool.

Scientists have published a series of recommendations to enable communities and managers to minimise the impact of lionfish in the Mediterranean Sea. The invasive species was first noticed off the coast of the Lebanon in 2012, with sightings since recorded as far west as Sicily, and north into the Adriatic Sea off Croatia. More entered in 2015 due to the enlargement and deepening of the Suez Canal, with their spread unimpeded due to a lack of common predators. Researchers in the UK and Cyprus have said increasing lionfish densities – combined with the species' generalist diet and consumption of ecologically and socio-economically important fish – has the potential to result in further disruption of an already stressed marine environment. They have now published a Guide to Lionfish Management in the Mediterranean [PDF, 8.0 MB], which features a series of recommendations through which they hope lionfish populations can be managed.

Scientists have identified 66 alien plant and animal species, not yet established in the European Union, that pose the greatest potential threat to biodiversity and ecosystems in the region. From an initial working list of 329 alien species considered to pose threats to biodiversity recently published by the EU, scientists have derived and agreed a list of eight species considered to be very high risk, 40 considered to be high risk, and 18 considered to be medium risk.

Recently, a team led by Prof. LI Yiming from the Institute of Zoology, Chinese Academy of Sciences, conducted a comprehensive study evaluating the invasion risk of global alien vertebrates, to help facilitate the balance between development and conservation for the Belt and Road Initiative (BRI). This study, published with the title of "Risks of biological invasion on the Belt and Road" in Current Biology, was online on January 24, 2019. The Belt and Road Initiative (BRI) proposed by China is regarded as the biggest global development program ever to occur on earth. It involves nearly half of our planet across Asia, Europe, Africa, Oceania and America, covering 77% (27/35) global biodiversity hotspots. Its high expenditure into infrastructure constructions may accelerate trade and transportation and thus promote alien species invasions, which is one primary anthropogenic threat to global biodiversity. 

A map identifying the areas suitable for establishment of the spotted lanternfly (SLF) in the United States and other countries has been published in the Journal of Economic Entomology by Agricultural Research Service scientists. The SLF, originally from China, has spread to Korea and Japan, and has been found most recently in the United States in Pennsylvania, New Jersey, Virginia and Delaware. These insects are pests of many agricultural crops including almonds, apples, blueberries, cherries, peaches, grapes and hops as well as hardwoods such as oak, walnut and poplar, among others. USDA and State partners have been working to contain SLF populations since 2014. There is the potential for far reaching economic damage if the SLF becomes widely established in the United States.

New research from The University of Western Australia has shed light on why some invasive plants make a better comeback after a fire, outstripping native species in the race for resources.

The Great Lakes Fishery Commission today reported that populations of the invasive, parasitic sea lamprey remain at near-historic lows, below targets, in Lakes Michigan and Ontario, and above target, but holding steady, in Lakes Huron, Superior and Erie. Sea lamprey populations in Lake Huron are close to target levels and have been holding steady for the past five years. Abundances in Lakes Superior and Erie remain above target but have also decreased significantly since the near-record highs observed in 2017. Sea lampreys are the worst of the alien species to invade the Great Lakes. Before control, sea lampreys destroyed many times the human fish catch. Today, sea lamprey control is the foundation of the $7 billion Great Lakes fishery. The Commission and its partners are encouraged by the overall decrease in abundance of sea lampreys throughout the Great Lakes basin during 2019, but caution that environmental conditions, such as a prolonged spring and high precipitation events, contributed to the decrease.

Spotted lanternfly is a threat to Maryland and the U.S. The Maryland Department of Agriculture issued a quarantine October 28, 2019 in an effort to contain the invasive species in Cecil and Harford counties after the spotted lanternfly was spotted in Cecil’s northeastern corner and along Harford’s northern border. See additional resources on the Maryland Department of Agriculture's site for Spotted Lanternfly for up-to-date information.

For questions related to the quarantine, permitting, treatment, or to report a sighting of the spotted lanternfly, especially outside of the quarantine zone, call 410-841-5920 or email DontBug.MD@maryland.gov. If you report a spotted lanternfly via email, please provide the location of the sighting and your contact information.

Injurious wildlife provision of the Lacey Act provides effective tool to halt the introduction and spread of species that have been identified as imminent and serious threats. The U.S. Fish and Wildlife Service took action to help ensure 10 nonnative freshwater fish species and one nonnative freshwater crayfish species do not become established in the United States and damage native wildlife and habitats.

The U.S. Fish and Wildlife Service is announcing a $100,000 challenge to combat white-nose syndrome (WNS), a lethal fungus that has killed millions of bats in North America and pushed some native bat species to the brink of extinction. Funding will be awarded to individuals who identify innovative ways to permanently eradicate, weaken or disarm the disease.

There is no known cure for white-nose syndrome, but scientists worldwide are working together to study the disease and how it can be controlled. Much of this work has been conducted under the umbrella of the U.S. National Response to White-nose Syndrome, a broad, multi-agency effort led by the Service.

The deadline for individuals or teams to enter the challenge was Dec.31, 2019. Winning ideas will be the focus of future collaborations with scientists, designers and engineers to bring solutions to life. Additional information regarding rules and eligibility is available at White-nose Syndrome Challenge.