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15 May 2020 Response of Male Queensland Fruit Fly (Diptera: Tephritidae) to Host Fruit Odors
Mst Shahrima Tasnin, Rehan Silva, Katharina Merkel, Anthony R. Clarke
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Abstract

The surveillance and management of Dacini fruit fly pests are commonly split by fly gender: male trapping focuses on the dacine ‘male-lures’, whereas female trapping focuses on lures based on host-fruit volatiles. Although the males of several Dacini species have been reported to be attracted to host fruit volatiles, the option of using host-fruit traps for males has, to date, been ignored. Males of the cue-lure responsive fruit fly Bactrocera tryoni (Froggatt) have been recorded as responding to host-fruit volatile blends, but it is not known how frequently this happens, if it is age-dependent, or the strength of the response relative to cue-lure throughout the year. Here, we conducted an olfactometer experiment to test the lifetime (weeks 1–15) response of B. tryoni males to the odor of tomato, a known host of this fly, and compare catches of wild males to tomato-based traps and cue-lure traps in the field. Bactrocera tryoni males started to respond to tomato odor as they sexually matured (2 to 3 wk olds) and thereafter showed consistent olfactory response until advanced age (15 wk). In the field, wild males were captured by tomato-based traps throughout the year at a level not significantly different from cue-lure traps. The reason for the consistent B. tryoni male response to host fruit odor at this stage is not known, but it certainly occurs at a level greater than can be continued to be ignored for both basic and applied research.

© The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Mst Shahrima Tasnin, Rehan Silva, Katharina Merkel, and Anthony R. Clarke "Response of Male Queensland Fruit Fly (Diptera: Tephritidae) to Host Fruit Odors," Journal of Economic Entomology 113(4), 1888-1893, (15 May 2020). https://doi.org/10.1093/jee/toaa084
Received: 23 January 2020; Accepted: 5 April 2020; Published: 15 May 2020
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KEYWORDS
Bactrocera tryoni
cue-lure
Dacini male
host fruit
tomato odor
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