Department of Entomology, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan.
Department of Entomology, University of Agriculture Faisalabad, Faisalabad, Pakistan.
Environ Sci Pollut Res Int. 2018 Jun;25(17):17033-17037. doi: 10.1007/s11356-018-1898-1. Epub 2018 Apr 9.
Red cotton bug, Dysdercus koenigii (Hemiptera: Pyrrhocoridae), has become the major insect pest of various crops, including cotton, and thereby reducing the yield qualitatively and quantitatively and synthetic insecticides belonging to different groups are the major control agents for such insect pests. A laboratory experiment was carried out to evaluate the effect of different conventional insecticides, i.e., imidacloprid, deltamethrin, lambda cyhalothrin, gamma cyhalothrin and cyfluthirn on haemocytes of D. koenigii. The individuals were exposed to insecticides separately and data was recorded after 30 and 60 min of the exposure. The findings of current study depicted chlorpyrifos to be more effective and significant alterations in total haemocyte counts and differential haemocyte counts were observed in the cyfluthirn treated D. koenigii. In addition to this, cell structure was also disrupted as an immune response. Similar studies would also be helpful to understand the defence mechanisms of insects against the xenobiotics which will help to device efficient management tools for D. koenigii.
红棉象甲（Dysdercus koenigii）（半翅目：红蝽科）已成为包括棉花在内的各种作物的主要害虫，从而降低了作物的质量和数量，而属于不同类别的合成杀虫剂是防治此类害虫的主要手段。进行了一项实验室实验，以评估不同常规杀虫剂，即吡虫啉、溴氰菊酯、高效氯氟氰菊酯、氯氰菊酯和三氟氯氰菊酯对 D. koenigii 血细胞的影响。将个体分别暴露于杀虫剂中，并在暴露后 30 和 60 分钟记录数据。本研究的结果表明，毒死蜱更有效，并且在处理的 D. koenigii 中观察到总血细胞计数和差异血细胞计数的显着变化。除此之外，细胞结构也被破坏，作为免疫反应。类似的研究也有助于了解昆虫对异生物的防御机制，这将有助于设计针对 D. koenigii 的有效管理工具。
