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Singing on the wings! Male wing fanning performances affect female willingness to copulate in the aphid parasitoid Lysiphlebus testaceipes （Hymenoptera： Braconidae： Aphidiinae）

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Insect Science 2016年第4期23卷 603-611页

作者： Giovanni Benelli Nickolas G. Kavallieratos Elisa Donati giulia giunti Cesare Stefanini Angelo Canale Insect Behavior Group Department of Agriculture Food and Environment University of Pisa Pisa Italy Laboratory of Agricultural Entomology Department of Entomology and Agricultural Zoology Benaki Phytopathological Institute Kifissia Attica Greece The BioRobotics Institute Sant'Anna School of Advanced Studies Pontedera Pisa Italy

Lysiphlebus testaceipes （Hymenoptera： Braconidae： Aphidiinae） is a generalist endoparasitoid attacking more than 100 aphid species. In L. testaceipes, wing fanning is a main male courtship display evoked by a female-borne sex pheromone. However, no information is available on the characteristics and behavioral role of male fanning during courtship in this parasitoid. Here, the courtship behavior of a wild strain ofL. testaceipes was quantified and the male wing fanning performances were analyzed through high-speed video recordings and examined in relation to mating success. Courtship sequence of wild L. testaceipes did not substantially differ from that previously reported for other populations mass reared on aphids. We observed that the male courtship duration did not affect mating success. However, video analysis revealed that the males producing high-frequency fanning signals achieved higher mating success over those that display low-frequency fanning. Wing fanning before successful and unsuccessful courtship differed in amplitude of wing movements and alignment toward the mate, highlighting that frontal courtship positively influence the female mating decisions. This study increases knowledge on sexual behavior in a key parasitoid of aphids, highlighting the importance of wing fanning among the range of sensory modalities used in the sexual communication ofL. testaceipes. From a practical point of view, this information is useful in L. testaceipes-based biocontrol strategies, since it can help to establish parameters for quality checking of mass-reared wasps over time.

关键词： biocontrol agent courtship mating success parasitic wasp sensory ecology sexual communication

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