Male Accessory Gland Secretions Modulate Female Post-Mating Behavior in the Moth Spodoptera litura

Yu, Jin-Feng; Li, Cong; Xu, Jin; Liu, Jian-Hong; Ye, Hui
January 2014
Journal of Insect Behavior;Jan2014, Vol. 27 Issue 1, p105
Academic Journal
The study of male insects' accessory gland (MAG) secretions will promote our understanding of reproductive strategies and their evolution, and will facilitate the development of new approaches for pest control. Here, we carried out a series of experiments to determine the functions of MAG secretions on modulating female post-mating behavior in the moth Spodoptera litura. Results showed that females injected with MAG secretions called and mated significantly less than controls in the night after treatment, which were independent of mechanical stimulation during mating and the presence of sperm. However, a successful mating resulted in a longer loss in sexual receptivity (lasting to the second night after mating). This study also demonstrated that MAG secretions not only triggered oviposition but also promoted egg development, which also were not dependent on mechanical stimulation during mating and the presence of sperm. MAG secretions also showed negative effect on female longevity, which may be because MAG secretions stimulate females to allocate more resources to egg development and oviposition, leaving fewer resources for survival. Results of this study also suggest that oviposition behaviors incur energy costs. The hypothesis that virgin females may conduct oosorption to prolong longevity is not supported.


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