Abstract:
Chaff (the outermost protective layer of rice grain) in nano and ground sized particles was bio-assessed to explore its insecticidal effects against the greater wax moth, Galleria mellonella (Lepidoptera: Pyralidae). These particles induced remarkable disturbances in the biological patterns of the greater wax moth. These were cleared as they exhibited insecticidal impact on both juvenile and adult stages, their impacts on larval, pupal and adult death, the formation of morphogenetic features (permanent larvae and larval-pupal intermediates), their negative influence on the adult emergence and the potentialities of the applied concentrations to hinder the larval weight gain. The recorded LC50 values proved more larvicidal potency of the nano-sized particle than that of the ground rice chaff one. The transverse sections in the midgut of the 20 days old larvae (both treated and untreated ones) confirmed the histopathological deformations of the examined particles. The high siliceous content of the chaff particle may be responsible for such recorded disturbances.
摘要:
对纳米和研磨大小的颗粒中的箔条(稻谷的最外层保护层)进行了生物评估,以探索其对较大蜡蛾的杀虫作用,海棠(鳞翅目:Pyralidae)。这些颗粒在较大的蜡蛾的生物学模式中引起了显着的干扰。这些被清除,因为它们对幼年和成年阶段都表现出杀虫作用,它们对幼虫的影响,p和成年死亡,形态发生特征(永久性幼虫和幼虫-蛹中间体)的形成,它们对成虫出苗的负面影响以及施加浓度阻碍幼虫体重增加的潜力。记录的LC50值证明,与磨碎的稻壳相比,纳米级颗粒的杀幼虫能力更强。20天大幼虫(处理和未处理的幼虫)中肠的横截面证实了所检查颗粒的组织病理学变形。谷壳颗粒的高硅质含量可能是这种记录的干扰的原因。