Application of a powdered artificial diet to promote the establishment of the predatory bug Geocoris varius (Hemiptera: Geocoridae) on strawberry plants

Applied Entomology and Zoology - Tập 48 - Trang 165-169 - 2013
Kiyoaki Igarashi1, Masashi Nomura1, Satoko Narita2
1Laboratory of Applied Entomology, Graduate School of Horticulture, Chiba University, Matsudo, Japan
2Insect-Microbe Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Japan

Tóm tắt

We examined whether the application of a powdered artificial diet on target plants would promote the establishment of Geocoris varius (Uhler) (Hemiptera: Geocoridae). Laboratory trials showed that, after 72 h, 93 % of the G. varius individuals remained on plants to which the artificial diet was applied as opposed to only 30 % of G. varius remaining on untreated strawberry plants. Moreover, application of the powdered diet promoted the development of G. varius from the third to the fifth nymphal stages and extended the average longevity by 12 days. The results suggested that the application of powdered artificial diet promotes the establishment of G. varius released in a greenhouse, even when pest densities are low, increasing the effectiveness of biological control. Furthermore, the increase in predation associated with greater numbers of more developed G. varius would improved the effectiveness of this biocontrol method.

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