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To improve the mass production of the parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae) the effects of supplementary nutrition on its reproduction and mating behaviour were investigated using Plodia interpunctella Hübner (Lepidoptera: Pyralidae) larva as a host. The survival of mated male wasps was markedly prolonged after feeding with fi ve different types of nutrients and that of unmated males was markedly prolonged except when provided with yeast solution. Providing female wasps with supplementary nutrition did not affect their longevity. When H. hebetor reproduced sexually and was supplied with an abundance of hosts, females produced 101.0 and 96.7 female offspring, respectively, when fed 20% sucrose or 20% honey solutions, however, when provided with only ten hosts the provision of supplementary nutrition did not affect the number of female offspring they produced. The 20% maltose, 20% sucrose and 20% honey solutions signifi cantly promoted the courtship behaviour of male wasps, and the 20% yeast and 20% honey solutions increased the mating success of males paired with virgin females. * Corresponding author; e-mail: huangyz@ahau.edu.cn ** The fi rst two authors contributed equally to the present study. INTRODUCTION Controlling pests using their natural enemies is one of the most important measures proposed for the development of sustainable agriculture (Ahmad & Jam, 2015). The control of pests by natural enemies is in accord with the natural order and processes, includes the protection and utilization of indigenous natural enemies in nature and the release of artifi cially produced natural enemies (Yang et al., 2006). For improving pest control using natural enemies the most immediate and effective means is to simultaneously release artifi cially produced natural enemies into nature (Michaud, 2018). However, because of the technology needed, unstable effect and high cost it is not a popular method of pest control (Zhang & Chen, 2014). Therefore, approaches for effectively enhancing the effi ciency of artifi cial breeding and use of natural enemies have been developed by scientists to overcome the obstacles to the use of natural enemy control. As an ectoparasitoid of the larvae of many kinds of Lepidoptera, H. hebetor exerts good control on these insect pests in the fi eld (Benson, 1974; Nay & Perring, 2005). There is information on the population growth and host location by H. hebetor (Nikam & Pawar, 1993; Mironidis & Savopoulou-Soultani, 2009; Adarkwah et al., 2010; Mbata Eur. J. Entomol. 117: 393–399, 2020 doi: 10.14411/eje.2020.043

Effect of supplementary nutrition on the reproduction and mating behaviour of Habrobracon hebetor (Hymenoptera: Braconidae)