Effects of three modern insecticides, pyriproxyfen, spinosad and tebufenozide, on survival and reproduction of Chrysoperla carnea adults

Protección de Cultivos, Escuela Técnica Superior de Ingenieros Agrónomos, Ciudad Universitaria, E-28040 Madrid, Spain
Annals of Applied Biology (Impact Factor: 1.96). 03/2005; 142(1):55 - 61. DOI: 10.1111/j.1744-7348.2003.tb00229.x

ABSTRACT Three novel insecticides, pyriproxyfen, spinosad and tebufenozide, were evaluated for their effect on survival and reproduction of Chrysoperla carnea adults using two methods of exposure: direct contact and ingestion. Pyriproxyfen and tebufenozide proved to be harmless to adult survival, whereas spinosad 72 h after treatment reduced the number of adults by 39.8% and 87.2% in topical and ingestion treatment at the maximum concentration recommended (800 mg a.i. litre−1). Fecundity was not affected irrespective of the insecticide or time of application (before or after the onset of oviposition). Concerning fertility, only pyriproxyfen exerted a negative effect on hatching when the eggs were deposited by females treated by ingestion in the post-oviposition period at the highest concentration tested (150 mg a.i. litre−1).

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