Predation of the Peach Aphid Myzus persicae by the mirid Predator Macrolophus pygmaeus on Sweet Peppers: Effect of Prey and Predator DensityReportar como inadecuado




Predation of the Peach Aphid Myzus persicae by the mirid Predator Macrolophus pygmaeus on Sweet Peppers: Effect of Prey and Predator Density - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1

Entomologie fonctionnelle et évolutive, Gembloux Agro-Bio Tech, University of Liege, 2 Passage des Déportés, Gembloux, 5030, Belgium

2

Centre for Sustainable Agriculture, Lancaster University, Lancaster, LA1, UK





*

Author to whom correspondence should be addressed.



Academic Editor: Brian T. Forschler

Abstract Integrated Pest Management strategies are widely implemented in sweet peppers. Aphid biological control on sweet pepers includes curative applications of parasitoids and generalist predators, but with limited efficiency. Macrolophus pygmaeus is a zoophytophagous predator which has been reported to predate on aphids, but has traditionally been used to control other pests, including whiteflies. In this work, we evaluate the effectiveness of M. pygmaeus in controlling Myzus persicae Homoptera: Aphididae by testing different combinations of aphid and predator densities in cage-experiments under greenhouse conditions. The impact of the presence of an alternative factitious prey E. kuehniella eggs was also investigated. Macrolophus pygmaeus, at densities of four individuals-plant, caused rapid decline of newly established aphid populations. When aphid infestations were heavy, the mirid bug reduced the aphid numbers but did not fully eradicate aphid populations. The availability of a factitious prey did not influence M. pygmaeus predation on aphids. Based on our data, preventive application of M. pygmaeus, along with a supplementary food source , is recommended to control early infestations of aphids. View Full-Text

Keywords: biocontrol; predator density; predation; factitious diet; food supplement; pepper plants biocontrol; predator density; predation; factitious diet; food supplement; pepper plants





Autor: Lara De Backer 1, Felix L. Wäckers 2, Frédéric Francis 1 and François J. Verheggen 1,*

Fuente: http://mdpi.com/



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