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۱Impact of Phytopesticides on Trogodermagranarium Everts (Coleoptera: Dermestidae) in Stored Wheat
اطلاعات انتشار: World Applied Sciences Journal، سي و يكم،شماره۱۰، ۲۰۱۴، سال
تعداد صفحات: ۱۲
Khapra beetle is considered as an economically important pest of stores grains. Although chemical treatment of stored grains against pests is cheaper and time saving but it has adverse effects on human health and eco–system. Therefore, efforts to manage these pests through plant extracts is required to implemented to prevent any contamination of synthetics in stored grains. Present study was designed to evaluate the effectiveness of some plants having insecticidal properties against Khapra beetle infesting the wheat grains. The mortality, repellency, growth inhibition effect and anti–feedant activities of botanicals were examined under laboratory condition. All of the botanicals provided significantly more mortality of Khapra beetle (Larval stage). Neem leaves and Kortuma peel extracts @ 15% provided 32.10%–30.86% mortality respectively after 9–days oftreatment. Dirakh and Datura with 27% beetle mortality were followed by Shahtara, Kinow and Grape–fruit extract with ˜20% mortality. All the products showed good repellant effects against Khapra beetle. In another experiment Neem, Dirakh, Kortuma and Datura inhibited the insect (Pupa, Adult) ranging from 37.34% to 50%. The final storage losses of wheat grains treated with these botanicals were also decrease significantly as compared to control. Findings suggested that most these botanicals are effective to control the pest infestation in stored grains.

۲Scorpion Venom Peptides for the Management of Bactrocera zonata (Diptera: Tephritidae)
اطلاعات انتشار: World Applied Sciences Journal، سي و دوم،شماره۲، ۲۰۱۴، سال
تعداد صفحات: ۳
A variety of toxin proteins have been used against insect pests of economic importance having rare success to control the targeted pests. Scorpion venoms are complex mixtures of toxic peptides that are target specific against wide range of crop pests. Present study was aimed to evaluate insecticidal potential of peptide fractions (3–5KD) obtained from Odontobuthus odonturus (Arachnida: Buthidae) venom. The peptides were used against fruit flies, Bactrocera zonata (Diptera: Tephritidae) in controlled conditions. Topical treatment of different concentrations was done on the dorsal part of flies. Calculated LD50 and LD95were 6.53 μl and 18.84 μl respectively. Significantly higher mortalities were recorded in the treated groups. Findings suggested that low molecular peptide fractions are effective toxin against B. zonata. These peptides if formulated commercially could be the alternative to hard chemistries.
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