Effects of methoxyfenozide on Lobesia botrana Den & Schiff (Lepidoptera: Tortricidae) egg, larval and adult stages

• Published in: Pest management science Vol. 61; no. 11; pp. 1133 - 1137
• Main Authors: Saenz-de-Cabezon Irigaray, F.J, Marco, V, Zalom, F.G, Perez-Moreno, I
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.11.2005; Wiley; Wiley Subscription Services, Inc
• Subjects: adult insects; adult sterility; Animal reproduction; Animals; application rate; Biological and medical sciences; Control; developmental stages; egg mortality; Fundamental and applied biological sciences. Psychology; grape berry moth; grapes; Hydrazines - pharmacology; insect control; insect pests; Insecticides - pharmacology; Insects; Juvenile Hormones - pharmacology; Larva - drug effects; larvae; larval mortality; Lobesia botrana; Longevity - drug effects; methoxyfenozide; mortality; Moths - drug effects; Moths - growth & development; ova; Ovum - drug effects; Pesticides; Phytopathology. Animal pests. Plant and forest protection; plant pests; Protozoa. Invertebrates; Pupa - drug effects; Pupa - growth & development; Reproduction - drug effects; vineyards; Vitis vinifera; Spain; egg mortality; Egg; Insecta; Treatment efficiency; Mortality; methoxyfenozide; Insect growth regulator; Sterility; Lobesia botrana; Ecdysone analogue; adult sterility; Tortricidae; Pest; Larva; larval mortality; Arthropoda; Lepidoptera; Developmental stage; Invertebrata; grape berry moth
• ISSN: 1526-498X; 1526-4998
• DOI: 10.1002/ps.1082

The effect of the non-steroidal ecdysone agonist methoxyfenozide was evaluated against different developmental stages of the grape berry moth, Lobesia botrana Dennis & Schiffermuller (Lep, Tortricidae). Methoxyfenozide administered orally reduced the fecundity and fertility of adults treated with 1, 5 and 10 mg litre(-1); longevity was not affected. An LC50 value of 4.5 mg litre(-1) was obtained when applied to eggs of less than 1 day old. Surface treatment was more effective than when applied by spraying. Administered into the diet, methoxyfenozide had a larvicidal effect; older larvae were more susceptible than younger larvae, with LC50 values of 0.1 mg litre(-1) for L1, 0.04 for L3 and 0.02 for L5. Larvae treated with sub-lethal doses throughout their lives did not emerge as adults at the highest doses (0.08, 0.04, 0.02 and 0.01 mg litre(-1)), with 65% and 40% emergence occurring for the lowest (0.005 and 0.0025 mg litre(-1)). Mortality occurred only in the larval stage.