Moh. Mirza Nuryady, Elly Purwanti, Tutut Indria Permana, Kiky Martha Ariesaka
Dengue Hemorrhagic Fever (DHF) remains a significant health challenge in urban and semi-urban regions, including Malang City, Indonesia, where Aedes aegypti is the primary vector. This study aimed to identify the breeding site preferences of Ae. aegypti and assess its resistance to 0.8% malathion and 0.05% cypermethrin insecticides. Using a descriptive observational design, ovitraps were deployed in three districts to collect mosquito larvae and eggs, and interviews with residents provided additional data on breeding site preferences. Resistance tests followed WHO guidelines, with mortality rates analyzed after insecticide exposure. Results indicated that, Ae. aegypti larvae were predominantly found in bathroom water tanks (45%) and flower vases (35%). Resistance status revealed geographical variability: Ae. aegypti in District 1 were resistant to cyper-methrin, while populations in Districts 2 and 3 were susceptible, with an average status of Ae. aegypti is tolerant to cypermethrin. For malathion, resistance was widespread, particularly in District 3, with an average status of Ae. aegypti to malathion is resist-ant. These findings suggest that the use of malathion for vector control in Malang is no longer effective, while cypermethrin remains viable under strict monitoring to prevent future resistance. This study underscores the need for targeted insecticide use and regu-lar monitoring to optimize vector control strategies and minimize DHF transmission. © 2025, Universitas Negeri Semarang. All rights reserved.
Institute of Parasitology, Department of Biological Science and Pathology, Veterinary Medicine of Vienna, Austria; Biology Education Department, Faculty of Teacher Training and Education, University of Muhammadiyah Malang, Malang, Indonesia; Department of Medicine, Faculty of Medicine, State University of Malang, Malang, Indonesia
