Invasive Species - What's New on NISIC's Site

Golden mussel (Limnoperna fortunei), an invasive, non-native freshwater bivalve, was recently discovered in the Port of Stockton by California Department of Water Resources staff while conducting routine operations. This discovery is the first known occurrence of golden mussels in North America. The species poses a significant immediate threat to the ecological health of the Delta and all waters of the state, water conveyance systems, infrastructure and water quality. Please report organisms observed in California suspected to be golden mussels to CDFW’s Invasive Species Program.

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

USDA announced the agency is planning to enhance testing and monitoring for H5N1, building on measures taken by USDA since the beginning of the avian influenza outbreak. In partnership with state veterinarians, USDA will implement a tiered strategy to collect milk samples to better assess where H5N1 is present, with the goal to better inform biosecurity and containment measures, as well as to inform state-led efforts to reduce risk to farm workers who may be in contact with animals infected with H5N1. Since this disease was first detected in dairy cattle in March 2024, the USDA and state and federal partners have taken several steps to better understand the virus and work to eliminate it from dairy herds.
See related resource: Avian Influenza

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service is hosting its fourth African Swine Fever (ASF) Action Week this week (October 28-November 1, 2024). We are encouraging U.S. swine producers, small farms and owners of all types of pigs to join us to learn about ASF and what they can do to help protect the U.S. swine herd.
See related resource: Protect Our Pigs: Fight African Swine Fever

The $900,000 grant will help Virginia Tech researchers see if the spotted lanternfly can help spread a fungus that kills the tree-of-heaven. The goal of the grant is to develop a native fungus as a biocontrol for the tree-of-heaven. Researchers are investigating whether the spotted lanternfly could help transmit the fungus from tree to tree, reducing the need for human intervention.

The U.S. Department of Agriculture’s Forest Service is awarding $16 million in strategic investment in more than 100 projects in 37 states and two territories to combat the spread of invasive species threatening ecosystems. Thanks to the Forest Health provision of the Bipartisan Infrastructure Law, the Forest Service has invested $56 million to combat invasive species since 2022.

The National Early Detection Rapid Response (EDRR) Information System is an emerging online resource for invasive species information sharing and collaboration that serves as the information hub of the National EDRR Framework. This centralized network will improve access to existing and emerging information resources and expand collaboration to facilitate early detection and rapid response to biological threats across the nation. 
See also: SIREN: National Early Detection Rapid Response (EDRR) Information System (News Release, Apr 19, 2024)

Maryland renamed the northern snakehead to the Chesapeake Channa in April 2024. The name change aims to increase public interest in eating the fish and control its population. The Maryland Department of Natural Resources will begin changing the name on January 1, 2025.
See also: Senate Bill 207 / House Bill 19

A study conducted by Maryland Department of Natural Resources Biologist Dr. Joseph Love illuminates one of the biological factors that could be contributing to Chesapeake Channa’s efficient spread through Maryland’s waters. The study, published in the July 2024 edition of Northeastern Naturalist, found that the majority of female Chesapeake Channa, also known as northern snakehead, collected from the upper Chesapeake Bay carried eggs in two distinct sizes, suggesting those fish could spawn twice a year.

The Citizen Carp Control is a national public awareness campaign working to educate, empower, and advocate for enhanced control and removal of invasive carps.