Response of citrus peelminer Marmara gulosa Guillén and Davis (Lepidoptera: Gracillariidae) stages to various insecticides
Version of Record online: 27 MAY 2008
Copyright © 2008 Society of Chemical Industry
Pest Management Science
Volume 64, Issue 11, pages 1143–1150, November 2008
How to Cite
Grafton-Cardwell, E. E., Montez, G. M., Reagan, C. A., Dunn, R. A. and Ouyang, Y. (2008), Response of citrus peelminer Marmara gulosa Guillén and Davis (Lepidoptera: Gracillariidae) stages to various insecticides. Pest. Manag. Sci., 64: 1143–1150. doi: 10.1002/ps.1609
- Issue online: 29 SEP 2008
- Version of Record online: 27 MAY 2008
- Manuscript Accepted: 19 FEB 2008
- Manuscript Revised: 6 FEB 2008
- Manuscript Received: 5 DEC 2007
- Marmara gulosa;
BACKGROUND: Egg and larval stages of citrus peelminer Marmara gulosa Guillén and Davis infesting zucchini squash Cucurbita pepo L. var ‘Revenue’ were exposed in the laboratory to a wide range of insecticide classes used in California citrus (organophosphate, carbamate, pyrethroid, neonicotinoid, insect growth regulator, fermentation products and sulfur) to determine peelminer response with and without a non-ionic adjuvant or oil.
RESULTS: All of the insecticides tested except sulfur reduced egg hatch and mine initiation. When the larval stage was treated, only buprofezin failed to reduce larval and pupal development. Cyfluthrin and spinosad, with the addition of adjuvant or oil, and abamectin combined with oil allowed no survivors at 7 days after treatment (DAT). The slower-acting insect growth regulators pyriproxyfen and diflubenzuron applied in combination with adjuvant or oil allowed no survival of peelminer 21 DAT. A field trial showed 62.6–68.5% reduction in mined citrus fruit after two applications of diflubenzuron and no significant improvement of control with the addition of cyfluthrin.
CONCLUSION: Bioassays indicate that M. gulosa is relatively susceptible to a wide range of insecticide classes in the laboratory. Lack of efficacy experienced in field trials would then be due to characteristics of the fruit or canopy that limit coverage, rather than to the effectiveness of the insecticides. Copyright © 2008 Society of Chemical Industry