Official Pest Reports

Official Pest Reports are provided by National Plant Protection Organizations within the NAPPO region. These Pest Reports are intended to comply with the International Plant Protection Convention's Standard on Pest Reporting, endorsed by the Interim Commission on Phytosanitary Measures in March 2002.

USA Flag Bactrocera dorsalis (Oriental Fruit Fly) - Quarantined Area in Orange County, California - United States
Date posted: 11/21/2006
Contact: Not available
This official pest report provides notification that the USDA Animal and Plant Health Inspection Service is expanding the quarantine list to include areas in Orange County and is applying restrictions on interstate movement of regulated articles from that area. These actions are necessary to prevent the spread of Oriental Fruit Fly (OFF), Bactrocera dorsalis, to non-infested areas of the United States.

Twelve adult and one pupa Oriental Fruit Fly were detected from October 16, 2006 until November 14, 2006 in both Jackson traps baited with Methyl Eugenol and McPhail traps baited with torula yeast in the Santa Ana area of Orange County, California. One pupa was also detected inside of a grapefruit collected from a tree in the same area. The area where all of the detections were made is residential. These detections triggered the initiation of this quarantine.

The quarantine boundary was established to encompass approximately 93 square miles of Orange County, California. There are no commercial host production sites in the quarantine area. There is one major airport, John Wayne/Orange County Airport, within the quarantine area. The closest host production is about 200-300 acres of avocados approximately ½ mile to the east of the quarantine area.

A male annihilation treatment of 600 bait stations of Naled/Methyl Eugenol per square mile is being applied to a 1 ½ mile area surrounding each detection for a total of 13 square miles and will be repeated at two week intervals for two life cycles after the last fly captured. Foliar treatment, using protein bait spray (Spinosad), is being applied to all host trees within 200 meters of each detection.