Volume 12, Issue 45 (fall 2008)                   2008, 12(45): 297-311 | Back to browse issues page

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Khosravi M, Ebadi R, Seyedoleslami H, Hatami B, Talebi Jahromi K. Growth Disturbances and Inhibitory Effect of Pyriproxyfen and Diflubenzuron on the Greater Wax Moth ( Galleria mellonella L.) under Different Temperatures. Journal of Crop Production and Processing 2008; 12 (45) :297-311
URL: http://jcpp.iut.ac.ir/article-1-921-en.html
Growth Disturbances and Inhibitory Effect of Pyriproxyfen and Diflubenzuron on the Greater Wax Moth ( Galleria mellonella L.) under Different Temperatures
M. Khosravi * , R. Ebadi , H. Seyedoleslami , B. Hatami , Kh. Talebi Jahromi
Abstract:   (31053 Views)
In this study diflubenzuron as a chitin synthesis inhibitor with a dosage of 25 mg A.I/L, and Pyriproxyfen as a juvenile hormone analogue with a dosage of 0.4 mgA.I/L were incorporated in the wax diets of young and last instar larvae of greater wax moth and reared at different temperatures (25, 30, 35°C). Results showed that these compounds in comparison with control increased larval mortality. Diflubenzuron and pyriproxyfen caused 33.9% and 24.1% mortality respectively. The young larvae showed higher mortality with the mean of 57.8% in diflubenzuron and 31.5% in pyriproxyfen. In evaluation of pupation and emergence of adults, no significant differences were observed between diflubenzuron and control. Pyriproxyfen induced reduction in pupation about 48.4% and adult emergence about 44.8% and caused some abnormalities of pupae. Last larval instar was more sensitive to JHA in this respect. Maximum pupation disruption occurred at 25ºC and 30ºC in comparison with 35ºC which reduced abnormal pupae up to 19.7%. IGRs were effective in last larval instar at 35 ºC and increased abnormality of adult up to 49.4%. Reproductive potential (egg viability, hatchability) of adults reduced in F1 generation and was 70-90 percent. IGRs have unfavorable effects on biological aspects of larvae therefore, it is possible to use IGRs alone or in conjunction with other pesticides (Fumigants) in integrated control of these pests.
Keywords: Diflubenzuron, Pyriproxyfen, Greater wax moth, Temperature, Larval instar.
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Type of Study: Research | Subject: General
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