A portion of San Diego County has been placed under quarantine for the Mexican fruit fly following the detection of one mated female fly in and around the unincorporated community of Spring Valley. This new quarantine will overlap a portion of the existing La Mesa Mexican Fruit Fly quarantine by 19 square miles. The USDA, the San Diego County Agricultural Commissioner and the CDFA are working collaboratively on this project.
The new quarantine area in San Diego County measures 76 square miles, bordered on the north by El Cajon; on the south by Proctor Valley; on the west by Lemon Grove; and on the east by McGinty Mountain. A link to the quarantine map may be found here: www.cdfa.ca.gov/plant/mexfly/regulation.html.
Sterile male Mexican fruit flies will be released in the area as part of the eradication effort. The release rate will be up to approximately 250,000 males per square mile per week in an area up to 50 square miles around the infestation.
The quarantine will affect growers, wholesalers and retailers of susceptible fruit in the area as well as nurseries that grow and sell Mexican fruit fly host plants. The quarantine will also affect local residents; home gardeners are urged to consume homegrown produce on site and not move it from their property. These actions protect against the spread of the infestation to nearby regions where it could affect California’s food supply and backyard gardens and landscapes.
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 eradication approach used in the Spring Valley area of San Diego County is the standard program used by CDFA and it is the safest and most effective and efficient response program available.
While fruit flies and other invasive species that threaten California’s crops and natural environment are sometimes detected in agricultural areas, the vast majority are found in urban and suburban communities. The most common pathway for these invasive species to enter our state is by “hitchhiking” in fruits and vegetables brought back illegally by travelers as they return from infested regions of the world. To help protect California’s agriculture and natural resources, CDFA urges travelers to follow the Don’t Pack a Pest program guidelines (www.dontpackapest.com). — Story Contributed by the California Department of Food and Agriculture