Sunday, 17 November 2002 - 4:24 PM

This presentation is part of : Ten-Minute Papers, Subsection Cd. Behavior and Ecology (Session 2)

Effects of post-teneral diet on foraging success of sterile male Mediterranean fruit flies

Boaz Yuval1, Meyrav Maor1, Batya Kamenski1, Shlomit Shloush1, and Roy Kaspi2. (1) Hebrew University, Department of Entomology, POB 12, Rehovot, Israel, (2) University of California, Department of Entomology, One Shields Avenue, Davis, CA

Post teneral diet containg protein has been shown to enhance the copulatory success of sterile male Mediterranean fruit flies. However, ingesting protein was also found to negatively affect male survival, in particular in experiments where males faced starvation following release in the field (Kaspi & Yuval, Annals of ESA 93: 949-955). Accordingly, the objective of the present study was to determine the effects of various post teneral diets, presented to sterile males prior to release, on their subsequent ability to forage for carbohydrates and protein in the field. Using mark-release recapture and analytic biochemical methods, we found that both protein-fed and protein-deprived males foraged successfully for protein and sugar in the field, when these resources were available. We conclude that protein-fed sterile males are able to exploit sources of nutrition in the release environment, and their inability to overcome starvation is not a concern for control operations using the sterile insect technique.

Species 1: Diptera Tephritidae Ceratitis capitata (medfly)
Keywords: nutritional ecology, sterile male

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