Biological and biochemical effects of lufenuron on Xanthogaleruca luteola (Muller, 1766 ) (Coleoptera: Chrysomelidae)

<p class="042abstractstekst"><em>Xanthogaleruca luteola </em>(Mull., 1766) is the major defoliator pest of elm trees in urban area. In this study the effect of lufenuron on some biochemical and biological characteristics was investigated on <em>X. luteola</em>. The LC<sub>30</sub> and LC<sub>50</sub> of lufenuron were determined on the second instar larvae as 20.22 and 36.65 mg l<sup>-1</sup>, respectively. Effects of LC<sub>30</sub> and LC<sub>50</sub> concentrations of lufenuron on some biological parameters showed that lufenuron caused an increase in larval, pre-pupal and pupal developmental periods. Also, none of the female insects that emerged from the treated larvae did not spawn during their life. The LC<sub>50</sub> concentration of lufenuron decreased carbohydrate, lipid and protein content and increased glycogen content. But there was not a significant difference in glycogen, and protein contents following the exposure to LC<sub>30</sub> concentration. However, glutathione-s-transferase (GST) and esterase activities were significantly increased at LC<sub>50</sub>. In conclusion, due to lethal and sublethal effect of lufenuron on biochemical and biological traits of <em>X. luteola</em>, it can be recommended for control this pest in IPM program.</p>