Suitability of greenbugs, cotton aphids, andHeliothis virescens eggs for development and reproduction ofOrius insidiosus |
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Authors: | L Bush T J Kring and J R Ruberson |
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Institution: | (1) Department of Entomology, University of Arkansas, AGRI 321, 72701 Fayetteville, AR, USA |
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Abstract: | Development, fecundity, and longevity of the predator,Orius insidiosus (Say) (Heteroptera: Anthocoridae), when reared on greenbug Schizaphis graminum (Rondani)], cotton aphid (Aphis gossypii Glover), or eggs of tobacco budworm Heliothis virescens (F.)] with green beans or water were examined. Developmental time was shortest when predators were reared onH. virescens eggs and beans and longest when reared on cotton aphids and water. Predators were most fecund when fedH. virescens eggs. The inclusion of beans in the nymphal diet further enhanced fecundity when fed eggs. Longevity of both females and
males was significantly shorter when reared on aphids than on eggs. Beans in the nymphal diet enhanced longevity of female
predators only in combination with budworm eggs. FemaleO. insidiosus were largest when reared onH. virescens eggs. Addition of green beans in aphid treatments resulted in increased size ofO. insidiosus when compared to aphids and free water. |
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Keywords: | prey suitability biological control plant feeding predator insidious flower bug cotton grain sorghum |
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