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Effect of Body Size, Age, and Premating Experience on Male Mating Success in Bactrocera tryoni (Diptera: Tephritidae)

Ekanayake, EWMTD and Clarke, Anthony R and Schutze, Mark K (2017) Effect of Body Size, Age, and Premating Experience on Male Mating Success in Bactrocera tryoni (Diptera: Tephritidae). Journal of Economic Entomology, 110 (5). pp. 2278-2281.

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Article Link(s): https://doi.org/10.1093/jee/tox186

Publisher URL: https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/jee/PAP/10.1093_jee_tox186/1/tox186.pdf

Abstract

Variation in male body size, age, and prior sexual experience may all influence male mating success in tephritid fruit flies. Bactrocera tryoni (Froggatt) is an Australian pest tephritid for which the sterile insect technique (SIT) is being actively pursued, and for which information on what makes males more competitive is urgently needed. Pair-wise competitive mating trials were run using laboratory-reared flies in walk-in field cages, evaluating young, large, and virgin B. tryoni males against old, small, and nonvirgin males, respectively. Analysis of male sexual competitiveness indices revealed that young and large males obtained significantly more copulations compared to old and small males; there was no significant difference between virgin and nonvirgin males in obtaining mates. While SIT programs will always release young males, the results do show that rearing programs which focus on producing larger males, rather than greater numbers of smaller males, will produce more sexually competitive males. After release, virgin SIT males will not be at a competitive disadvantage with sexually experienced males based on prior mating experience.

Item Type:Article
Business groups:Biosecurity Queensland
Keywords:Keywords: sexual competitiveness, male physiological attribute, mating success, Bactrocera tryoni, sterile insect technique
Subjects:Science > Entomology
Agriculture > Agriculture (General) > Agricultural education > Research. Experimentation
Deposited On:12 Jan 2018 00:57
Last Modified:12 Jan 2018 00:57

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