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Introduction of Aedes albopictus (Skuse) in southern California and potential for its establishment.

Isolated incidences of Aedes albopictus in the continental U.S. were reported as early as 1946 and the first incidence in California was reported in 1972. These introductions were referred to as "isolated incidences" because very few immatures were observed in used tires shipped from Southeast Asia. The first major discovery of a large population and subsequent establishment of Ae. albopictus in the U.S. was reported in 1986 from Houston, TX, in a shipment of used tires from Japan. In early June 2001, infestations of this species associated with containerized oceanic shipments of "lucky bamboo" (Dracaena spp.) packaged in standing water were introduced into southern California from mainland south China. Focal points of infestation are currently at the wholesale nurseries in southern as well as northern California. A control protocol for adulticiding and larviciding has been implemented by the Greater Los Angeles County Vector Control District. Surveys are presently being conducted by local vector control agencies in southern and northern California to determine the extent of infestation. Potential forAe. albopictus establishment is discussed.