Saipollizan Qurratul Aina, Ab Majid Abdul Hafiz
Household & Structural Urban Entomology Laboratory, Vector Control Research Unit, School of Biological Sciences, Universiti Sains Malaysia, Penang, 11800, Minden, Malaysia.
Toxicol Rep. 2021 Nov 5;8:1849-1855. doi: 10.1016/j.toxrep.2021.11.005. eCollection 2021.
The German cockroach, (L.), a prominent pest that requires management due to its detrimental economic and medical consequences. Several research discovered that German cockroaches were insecticide resistant, mainly commercial pesticides. One-week-old nymphs from two strains in Penang, Malaysia (Georgetown strain: EL and Greenlane strain: IC strain) were tested in the laboratory against two commercial insecticides, Cislin® 25 (deltamethrin) and Sumithion 50 (fenitrothion). The concentration of solutions used in the residual test based on the manufacturer labeling. Cislin® was tested at 1.90 ppm, 1.60 ppm, 1.30 ppm, and 1.0 ppm; Sumithion 50 was tested at 25 and 27.00 ppm, 23.00 ppm, 18.00 ppm, 14.00 ppm using the residual method. Probit analysis and one-way analysis of variance (ANOVA) were used to compare the data. Cislin® 25 and Sumithion 50 were more effective and high toxicity against the IC strain compared with the EL strain. Sumithion 50 demonstrated a fast knockdown time on cockroaches, but Cislin® 25 showed no knockdown time. Sumithion 50 showed a significant mortality rate in cockroaches within a short period of time compared to Cislin® 25. Both insecticides were found to be effective against both strains, but Sumithion 50 is more effective at controlling cockroaches than Cislin® 25.
德国小蠊（Blattella germanica (L.)）是一种突出的害虫，因其对经济和医学造成不利影响而需要加以防治。多项研究发现德国小蠊具有杀虫剂抗性，主要是对商业杀虫剂有抗性。来自马来西亚槟城两个品系（乔治市品系：EL和绿巷品系：IC品系）的一周龄若虫在实验室中接受了两种商业杀虫剂的测试，即西司林®25（溴氰菊酯）和速灭松50（杀螟硫磷）。残留试验中使用的溶液浓度依据制造商标签。西司林®分别以1.90 ppm、1.60 ppm、1.30 ppm和1.0 ppm进行测试；速灭松50使用残留法分别以25、27.00 ppm、23.00 ppm、18.00 ppm、14.00 ppm进行测试。使用概率分析和单因素方差分析（ANOVA）来比较数据。与EL品系相比，西司林®25和速灭松50对IC品系更有效且毒性更高。速灭松50对蟑螂表现出快速击倒时间，但西司林®25未显示出击倒时间。与西司林®25相比，速灭松50在短时间内对蟑螂显示出显著的死亡率。发现两种杀虫剂对两个品系均有效，但速灭松50在控制蟑螂方面比西司林®25更有效。
