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1 October 2004 Recapture of Sterile Mediterranean Fruit Flies (Diptera: Tephritidae) in California’s Preventative Release Program
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Abstract

In southern California, the sterile insect technique has been used since 1994 to prevent establishment of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). This method involves the continual mass release of sterile flies, which suppress or eliminate any introduced wild fly populations. In addition, Jackson traps baited with trimedlure are deployed throughout the preventative release region for the dual purpose of detecting wild flies and monitoring released sterile flies. Sterile fly recapture data for a 3-yr period was compared with climate and to host plant (in which traps were placed). Precipitation was negatively correlated; and temperature and relative humidity were positively correlated with fly recapture levels. The highest numbers of flies were recaptured during trapping periods associated with intermediate relative humidity and temperature, and low precipitation. Flies were recaptured throughout the entire year, in traps that had been frequently relocated to host plants with fruit. This finding suggests that these flies were capable of locating acceptable fruit in a variety of abiotic conditions. However, these data do not necessarily suggest that measurements unimportant in explaining sterile fly recapture are not of value in determining other outcomes important to the goals of sterile release programs, such as reducing the likelihood of establishment of an introduced wild Mediterranean fruit fly population. Future research might build on these results in developing more precise models useful in predicting recapture of sterile flies.

James D. Barry, Todd Blessinger, and Joseph G. Morse "Recapture of Sterile Mediterranean Fruit Flies (Diptera: Tephritidae) in California’s Preventative Release Program," Journal of Economic Entomology 97(5), 1554-1562, (1 October 2004). https://doi.org/10.1603/0022-0493-97.5.1554
Received: 11 November 2003; Accepted: 1 April 2004; Published: 1 October 2004
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