Entomologia Generalis (2019) 39, 239-249

Xiaojun Guo, Ning Di, Xu Chen, Zhengyang Zhu, Fan Zhang, Bin Tang, Huijie Dai, Jintang Li, Rong Guo and Su Wang (2019)
Performance of Trichogramma pintoi when parasitizing eggs of the oriental fruit moth Grapholita molesta
Entomologia Generalis 39 (3-4), 239-249
Abstract: In recent years, Grapholita molesta Busck has become a serious pest to fruit trees, especially to peach trees in China. In the present study, the parasitism of the pest by the parasitoid Trichogramma pintoi Voegele was studied, with assessment of the impact of UV-light, host egg age, host and parasitoid density, as well as different inoculation time. The UV-light treatment significantly decreased parasitism rate of the parasitoid compared to non-UV light treatment. T. pintoi preferred to parasitize newly laid G. molesta eggs, and parasitism rate decreased with increasing age of host eggs. Moreover, the parasitism rate on G. molesta increased with Trichogramma density although the rate of parasitism per parasitoid female reduced overall. The parasitism rate also increased when the releasing duration extended to 48 h. The results provided key information for developing the use of T. pintoi as biocontrol agent for management of G. molesta. Further studies will be needed to document potential method for field development of T. pintoi–based biological control of G. molesta in peach orchards.
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Grapholita molesta	Peach/nectarine (Prunus persica)
Trichogramma pintoi (parasitoid)	Grapholita molesta