Montaño-Reyes Abraham, Llanderal-Cázares Celina, Valdez-Carrasco Jorge, Miranda-Perkins Kalina, Sánchez-Arroyo Hussein
Fitosanidad-Entomología y Acarología, Colegio de Postgraduados, campus Montecillo, Montecillo, Estado de México, México.
Arch Insect Biochem Physiol. 2019 Oct;102(2):e21604. doi: 10.1002/arch.21604. Epub 2019 Jul 22.
Benzoylphenyl ureas inhibit chitin synthesis and interfere with the molting process in arthropods. In this study, the effect of diflubenzuron on third-instar larvae of Aedes aegypti was evaluated. The susceptibility to the product was determined, and the alterations generated were shown through light and electron microscopy. LC and LC were 0.23 and 0.47 ppm, respectively. The main alterations observed were the incapacity to complete the molt, a reduction of mobility, the fragmentation of the old cuticle, a division of the body segments that was not evident, and the deformation of the caudal structures. Images of the ultrastructure are included, where breaking zones in the cuticle were observed, separation of the cuticle, the epidermis and the muscles, and these latter with a disorganized arrangement. In low concentrations, from 0.15 ppm, diflubenzuron causes alterations in the behavior and morphology of Ae. aegypti.
苯甲酰基苯基脲抑制几丁质合成并干扰节肢动物的蜕皮过程。在本研究中，评估了二氟苯脲对埃及伊蚊三龄幼虫的影响。测定了该产品的敏感性，并通过光学显微镜和电子显微镜展示了所产生的变化。LC50和LC90分别为0.23和0.47 ppm。观察到的主要变化包括无法完成蜕皮、活动能力降低、旧表皮破碎、身体节段的分裂不明显以及尾部结构变形。文中包含了超微结构图像，其中观察到表皮中的断裂区域、表皮、表皮和肌肉的分离，以及后者排列紊乱。在低浓度下，从0.15 ppm起，二氟苯脲会导致埃及伊蚊的行为和形态发生变化。
