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Open AccessFeature PaperArticle

Efficacy of Chemicals for the Potential Management of the Queensland Fruit Fly Bactrocera tryoni (Froggatt) (Diptera: Tephritidae)

1
Graham Centre for Agricultural Innovation (New South Wales Department of Primary Industries and Charles Sturt University), Elizabeth Macarthur Agricultural Institute, Private Bag 4008, Narellan, NSW 2567, Australia
2
New South Wales Department of Primary Industries, Biosecurity and Food Safety, Elizabeth Macarthur Agricultural Institute, Private Bag 4008, Narellan, NSW 2567, Australia
3
New South Wales Department of Primary Industries, Chief Scientist’s Branch, Elizabeth Macarthur Agricultural Institute, Private Bag 4008, Narellan, NSW 2567, Australia
*
Author to whom correspondence should be addressed.
Academic Editors: Michael J. Stout, Jeff Davis, Rodrigo Diaz and Julien M. Beuzelin
Insects 2017, 8(2), 49; https://doi.org/10.3390/insects8020049
Received: 2 February 2017 / Revised: 30 March 2017 / Accepted: 2 May 2017 / Published: 9 May 2017
(This article belongs to the Special Issue Integrated Pest Management)
This study investigated alternative in-field chemical controls against Bactrocera tryoni (Froggatt). Bioassay 1 tested the mortality of adults exposed to fruit and filter paper dipped in insecticide, and the topical application of insecticide to adults/fruit. Bioassay 2 measured the mortality of adults permitted to oviposit on fruit dipped in insecticide and aged 0, 1, 3, or 5 days, plus the production of offspring. Bioassay 3 tested infested fruit sprayed with insecticide. The field bioassay trialed the mortality of adults exposed to one- and five-day insecticide residues on peaches, and subsequent offspring. Abamectin, alpha-cypermethrin, clothianidin, dimethoate (half-label rate), emamectin benzoate, fenthion (half- and full-label rate), and trichlorfon were the most efficacious in bioassay 1, across 18 tested insecticide treatments. Overall, the LT50 value was lowest for fenthion (full-label rate), clothianidin, and alpha-cypermethrin. Fenthion, emamectin benzoate, and abamectin had the greatest effect on adult mortality and offspring production. Infested fruit treated with acetamiprid, fenthion, and thiacloprid produced no/very few offspring. Alpha-cypermethrin demonstrated good field efficacy against adults (one day post treatment: 97.2% mortality, five day post treatment: 98.8% mortality) and subsequent offspring (100% across one and five day post treatments), comparable to that of fenthion (full-label rate) (100% mortality for offspring and adults across both post treatments). Alpha-cypermethrin is a possible alternative to fenthion against B. tryoni; as a pyrethroid, it may not be desirable if adjunct biological control is imperative. Thiacloprid and Acetamiprid may be useful as a post-harvest treatment. View Full-Text
Keywords: pesticide; insecticide; dimethoate; fenthion; alpha-cypermethrin; clothianidin; summerfruit; area wide management; integrated pest management pesticide; insecticide; dimethoate; fenthion; alpha-cypermethrin; clothianidin; summerfruit; area wide management; integrated pest management
MDPI and ACS Style

Reynolds, O.L.; Osborne, T.J.; Barchia, I. Efficacy of Chemicals for the Potential Management of the Queensland Fruit Fly Bactrocera tryoni (Froggatt) (Diptera: Tephritidae). Insects 2017, 8, 49. https://doi.org/10.3390/insects8020049

AMA Style

Reynolds OL, Osborne TJ, Barchia I. Efficacy of Chemicals for the Potential Management of the Queensland Fruit Fly Bactrocera tryoni (Froggatt) (Diptera: Tephritidae). Insects. 2017; 8(2):49. https://doi.org/10.3390/insects8020049

Chicago/Turabian Style

Reynolds, Olivia L.; Osborne, Terrence J.; Barchia, Idris. 2017. "Efficacy of Chemicals for the Potential Management of the Queensland Fruit Fly Bactrocera tryoni (Froggatt) (Diptera: Tephritidae)" Insects 8, no. 2: 49. https://doi.org/10.3390/insects8020049

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