Influence of fruit traits on oviposition preference and offspring performance of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) on three tomato (Lycopersicon lycopersicum) cultivars |
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| Authors: | Solomon Balagawi S Vijaysegaran Richard A I Drew S Raghu |
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| Institution: | Tropical Fruit Fly Research Group, Australian School of Environmental Studies, Griffith University, Nathan, Qld 4111, Australia.; Alan Fletcher Research Station, CRC for Australian Weed Management and Queensland Department of Natural Resources &Mines, PO Box 36, Sherwood, Qld 4075, Australia. |
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| Abstract: | Abstract In Queensland, three tomato ( Lycopersicon lycopersicum ) cultivars, Grosse Lisse, Roma and Cherry, are infested by Queensland fruit fly, Bactrocera tryoni (Froggatt). In this study, we examined if there was a correlation between oviposition preference and offspring performance of B. tryoni among the three tomato cultivars. We also investigated host plant traits that may explain any variation in preference and performance. Choice and no-choice experiments were carried out under laboratory conditions. A positive correlation between oviposition preference and offspring performance of B. tryoni was observed in the three tomato cultivars. Grosse Lisse and Roma cultivars were highly preferred by B. tryoni over Cherry cultivar. Performance (measured as proportion of eggs developing to the pupal stage) was significantly higher in Grosse Lisse and Roma cultivars than in Cherry cultivar. The pericarp toughness of Cherry cultivar appears responsible for its low rate of infestation, while the presence of 2-butanol and 1,4-butanediamine in Roma and Grosse Lisse, respectively, may partly be responsible for the high oviposition preference shown by B. tryoni towards these cultivars. |
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| Keywords: | Bactrocera tryoni fruit flies offspring performance oviposition preference Tephritidae tomato |
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