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Open AccessFeature PaperArticle

Resistance Management for Asian Citrus Psyllid, Diaphorina citri Kuwayama, in Florida

Citrus Research and Education Center, Department of Entomology and Nematology, University of Florida, 700 Experiment Station Rd., Lake Alfred, FL 33850, USA
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Academic Editors: Alberto Pozzebon, Carlo Duso, Gregory M. Loeb and Geoff M. Gurr
Insects 2017, 8(3), 103; https://doi.org/10.3390/insects8030103
Received: 28 July 2017 / Revised: 12 September 2017 / Accepted: 12 September 2017 / Published: 20 September 2017
(This article belongs to the Special Issue Arthropod Pest Control in Orchards and Vineyards)
The Asian citrus psyllid, Diaphorina citri Kuwayma, is one of the most important pests in citrus production. The objective of this study was to evaluate D. citri resistance management with three insecticide rotations and compare them with no rotation and an untreated check. The different insecticides (modes of action) tested were: dimethoate, imidacloprid, diflubenzuron, abamectin 3% + thiamethoxam 13.9%, and fenpropathrin. Eggs, nymph, and adult psyllids were counted weekly. Five insecticide applications were made in 2016. Insecticide susceptibility was determined by direct comparison with a laboratory susceptible population and field populations before and after all treatments were applied. Rankings of eggs, nymphs, and adults counted in treated plots were significantly lower than in the untreated control plots after each application. Initially, the resistance ratio (RR50) for each rotation model, as compared with laboratory susceptible strain and the field population before application, was less than 5.76 and 4.31, respectively. However, after five applications with dimethoate, the RR50 using the laboratory and pre-treatment field populations was 42.34 and 34.74, respectively. Our results indicate that effectively rotating modes of action can delay and/or prevent development of insecticide resistance in populations of D. citri. View Full-Text
Keywords: rotational model; resistance management strategy; leaf dip bioassay; insecticide resistance; mode of action rotational model; resistance management strategy; leaf dip bioassay; insecticide resistance; mode of action
MDPI and ACS Style

Chen, X.D.; Stelinski, L.L. Resistance Management for Asian Citrus Psyllid, Diaphorina citri Kuwayama, in Florida. Insects 2017, 8, 103.

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