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1 October 2010 Field Response of Mediterranean Fruit Flies to Ceralure B1 Relative to Most Active Isomer and Commercial Formulation of Trimedlure
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Abstract

In a field test to examine attractancy of Mediterranean fruit fly, Ceratitis capitata (Wiedemann), relative to release rates, equal moles of racemic ceralure B1 and trimedlure isomer C were compared on cotton wicks. Data were collected at 2, 4, and 7 d. The substrates were analyzed for longevity and overall persistence in the field. Ceralure B1 was equally attractive as trimedlure C for the first 2 d and significantly more so at 4 and 7 d based on trap counts of captured male Mediterranean fruit flies. Residue analysis of weathered wicks showed that the trimedlure C lasted for just 2 d in our field evaluations, whereas ceralure B1 had measurable material present after 7 d. Thus, based on the amounts of chemicals released, ceralure B1 was more active even in the first 2 d. Ceralure B1 also was formulated in a plastic matrix (ceralure coin) at three different dosages and tested for attractancy in the field against a 2-g trimedlure plug. A 150-mg ceralure B1 coin was equally attractive as a commercial 2-g trimedlure plug, whereas a 300-mg coin was significantly more attractive during a 6 – 8-wk deployment. Although our results clearly show that ceralure B1 is a superior attractant to trimedlure, costs of synthesis need to be considered as part of an overall program management strategy.

© 2010 Entomological Society of America
Eric Jang, Ashot Khrimian, and Timothy Holler "Field Response of Mediterranean Fruit Flies to Ceralure B1 Relative to Most Active Isomer and Commercial Formulation of Trimedlure," Journal of Economic Entomology 103(5), 1586-1593, (1 October 2010). https://doi.org/10.1603/EC09296
Received: 3 September 2009; Accepted: 1 May 2010; Published: 1 October 2010
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