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Evaluation the predation capacity of Orius minutus (L.) and Orius laevigatus (Fieber) against Oligonychus metasequiae (Acari: Tetranychidae)
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/364563
Orius minutus (L.) (Hemiptera: Anthocotidae) is a native predator of mites, thrips, and aphids whereas Orius laevigatus (Fieber) is a commercialized predator were assessed against O. metasequiae in laboratory and field. Adult females of both predator predated equally O. metasequiae adult after 3 hours of exposure in the laboratory on no choice assay. Orius minutus and O. laevigatus released with Portulaca oleracea plant in Metasequouia glyptostroboides tree reduced O. metasequiae population equally by 48.3% and 42.7% on first week after exposure. But O. laevigatus released without P. oleracea plant reduced 52.4% on the first week whereas O. minutus reduced only 6.2% of O. metasequiae population. We found only 3 O. minutus eggs on M. glyptostroboides leaves where 22 O. laevigatus eggs were found when treated without P. oleracea plant. Orius laevigatus laid 160.0 eggs on P. oleracea plant where as O. minutus laid only 25.7 eggs per plant. These result demonstrate that O. laevigatus can be applied for conservation biological control to suppress O. metasequiae population.
