NDLI: Is bigger better? Male body size affects wing-borne courtship signals and mating success in the olive fruit fly, Bactrocera oleae (Diptera: Tephritidae).

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Is bigger better? Male body size affects wing-borne courtship signals and mating success in the olive fruit fly, Bactrocera oleae (Diptera: Tephritidae).

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Is bigger better? Male body size affects wing-borne courtship signals and mating success in the olive fruit fly, Bactrocera oleae (Diptera: Tephritidae).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Benelli, Giovanni Donati, Elisa Romano, Donato Ragni, Giacomo Bonsignori, Gabriella Stefanini, Cesare Canale, Angelo
Description	Country affiliation: Italy Author Affiliation: Benelli G ( Insect Behaviour Group, Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy.); Donati E ( The BioRobotics Institute, Sant'Anna School of Advanced Studies, Pontedera, Italy.); Romano D ( Insect Behaviour Group, Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy.); Ragni G ( The BioRobotics Institute, Sant'Anna School of Advanced Studies, Pontedera, Italy.); Bonsignori G ( The BioRobotics Institute, Sant'Anna School of Advanced Studies, Pontedera, Italy.); Stefanini C ( The BioRobotics Institute, Sant'Anna School of Advanced Studies, Pontedera, Italy.); Canale A ( Insect Behaviour Group, Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy.)
Abstract	Variations in male body size are known to affect inter- and intrasexual selection outcomes in a wide range of animals. In mating systems involving sexual signaling before mating, body size often acts as a key factor affecting signal strength and mate choice. We evaluated the effect of male size on courtship displays and mating success of the olive fruit fly, Bactrocera oleae (Diptera: Tephritidae). Wing vibrations performed during successful and unsuccessful courtships by large and small males were recorded by high-speed videos and analyzed through frame-by-frame analysis. Mating success of large and small males was investigated. The effect of male-male competition on mating success was evaluated. Male body size affected both male courtship signals and mating outcomes. Successful males showed wing-borne signals with high frequencies and short interpulse intervals. Wing vibrations displayed by successful large males during copulation attempt had higher frequencies over smaller males and unsuccessful large males. In no-competition conditions, large males achieved higher mating success with respect to smaller ones. Allowing large and small males to compete for a female, large males achieve more mating success over smaller ones. Mate choice by females may be based on selection of the larger males, able to produce high-frequency wing vibrations. Such traits may be indicative of 'good genes,' which under sexual selection could means good social-interaction genes, or a good competitive manipulator of conspecifics.
File Format	HTM / HTML
ISSN	16729609
Issue Number	6
Journal	Insect Science
Volume Number	23
e-ISSN	17447917
Language	English
Publisher	Wiley
Publisher Date	2016-12-01
Publisher Place	Australia
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Zoology
Content Type	Text
Resource Type	Article
Subject	Biochemistry, Genetics and Molecular Biology Ecology, Evolution, Behavior and Systematics Insect Science Agronomy and Crop Science

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