Comparative effects of two novel Betaproteobacteria-based insecticides on Myzus persicae (Hemiptera: Aphididae) and Phenacoccus madeirensis (Hemiptera: Pseudococcidae)

Authors

  • Hail K Shannag Jordan University of Science and Technology, Faculty of Agriculture, Department of Plant Production, P.O. Box 3030, Irbid 22110, Jordan
  • John Lowell Capinera University of Florida, University of Florida, Department of Entomology and Nematology, P.O. Box 110620, Gainesville, Florida 32611-0620, USA

Keywords:

spirotetramat, Venerate, Grandevo, Movento, green peach aphid, Madeira mealybug

Abstract

We compared the lethal and sublethal effects of 2 novel Betaproteobacteria-based insecticides (Burkholderia spp. strain A396 as Venerate® XC; Chromobacterium subtsugae strain PRAA4-1 as Grandevo® WDG) for suppression of 2 polyphagous insect pests of world-wide importance: green peach aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae), and Madeira mealybug, Phenacoccus madeirensis Green (Hemiptera: Pseudococcidae). In laboratory and screenhouse tests, the insects were exposed to residues applied by leaf dipping, or by spraying the insects and foliage. These novel products also were compared to a well-established product, spirotetramat (Movento® 240 SC). Spirotetramat was generally effective for suppression of both species of insects, and Burkholderia (Venerate) induced mortality levels that made it competitive with spirotetramat. Chromobacterium subtsugae (Grandevo) was less satisfactory, inducing only moderate levels of mortality in both species. Reproduction by aphids surviving exposure to Burkholderia was slightly affected, whereas C. subtsugae did not affect reproduction. New Betaproteobacteria-based insecticides show promise for a useful role in suppressing important insect pests such as M. persicae and P. madeirensis.

 

Resumen

Comparamos los efectos letales y subletales de 2 nuevos insecticidas basados en Betaproteobacteria (cepa Burkholderia spp. A396 como Venerate ® XC; cepa PRAA4-1 de Chromobacterium subtsugae como Grandevo® WDG) para la supresión de 2 plagas de insectos polífagos de importancia mundial: el pulgón (áfido) verde del melocotón, Myzus persicae (Sulzer) (Hemiptera: Aphididae) y la cochinilla harinosa de Madeira, Phenacoccus madeirensis Green (Hemiptera: Pseudococcidae). En pruebas de laboratorio y en una casa de malla, los insectos fueron expuestos a los residuos aplicados por la inmersión de hojas o al rociar los insectos y el follaje. Estos nuevos productos también se compararon con un producto bien establecido, spirotetramat (Movento® 240 SC). Spirotetramat fue generalmente efectivo para la supresión de ambas especies de insectos y Burkholderia (Venerate) indujo niveles de mortalidad que lo hicieron competitivo con spirotetramat. Chromobacterium subtsugae (Grandevo) fue menos satisfactorio, induciendo solo niveles moderados de mortalidad en ambas especies. La reproducción de los áfidos que sobrevivieron a la exposición de Burkholderia se vio ligeramente afectada, mientras que C. subtsugae no afectó la reproducción. Los nuevos insecticidas basados en Betaproteobacteria prometen tener un papel útil en la supresión de plagas de insectos importantes, como M. persicae y P. madeirensis.

 

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Published

2019-04-27

Issue

Vol. 101, No. 2 (June 2018)

Section

Research Papers

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