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Effects of the insect growth regulator pyriproxyfen on immature stages of sunn pest, Eurygaster integriceps Puton Heteroptera Scutelleridae



Effects of the insect growth regulator pyriproxyfen on immature stages of sunn pest, Eurygaster integriceps Puton Heteroptera Scutelleridae



Munis Entomology & Zoology 5(1): 187-197



The effect of insect growth regulator (pyriproxyfen) on immature stages (eggs and nymphs) of Sunn pest, Eurygaster integriceps Puton (Heteroptera: Scutelleridae), which is of great importance in wheat and barley fields as nymphal and adult stages, was determined. When one day old eggs were treated with concentrations of 0.0, 0.1, 10, 100 and 1000 ppm, the egg hatchability were 96.90, 92.38, 98.4, 93.21 and 55.23 %, respectively. Similar results obtained when 3 day-old eggs were treated. However, when 5 day-old eggs were treated, no significant differences in egg hatchability between treatments observed (F = 1.51, P > 0.01). Adult weight was significantly influenced by treatment of nymphal instars. Treatments of first nymphal instars caused significant differences in adult weight between control and treatments (F = 25.63, P 0.1). Adult emergence, sex ratio, nymphal survival rate and adults abnormalities were also affected by pyriproxyfen treatments of nymphs.

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Accession: 037416840

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