Biting and Resting Behaviour of Malaria Vectors in Bandar-Abbas County, Islamic Republic of Iran; [Comportement De Piqure Et De Repos Des Vecteurs Du Paludisme Dans Le Comte De Bandar-Abbas (Republique Islamique D’Iran)] Publisher Pubmed



Mojahedi AR¹ ; Safari R¹ ; Yarian M² ; Pakari A¹ ; Raeisi A^{2, 3} ; Edalat H² ; Beniardelan M² ; Poudat A² ; Zaim M² ; Basseri HR² Show Affiliations
Source: Eastern Mediterranean Health Journal Published:2020

Abstract

Background: Blood feeding and resting behaviour of malaria vectors are the most influential factors in malaria trans-mission. Aims: To measure blood feeding and resting behaviour, conventional mosquito sampling methods were performed in an area with potential for malaria transmission. Methods: Adult mosquitoes were collected monthly from indoor/outdoor places by conventional sampling methods, and larval habitats were investigated. Enzyme-linked immunosorbent assay was used to measure the human blood index (HBI) of the mosquitoes. Results: Anopheles stephensi, Anopheles culicifacies, Anopheles dthali and Anopheles fluviatilis, were collected. Overall, 1249 female Anopheles mosquitoes were captured on human and animal baits, but no human–vector contact occurred indoors. A. dthali, A. fluviatilis and A. culicifacies showed a greater tendency to outdoor resting places in contrast to A. stephensi, which had a propensity to indoor resting places. The seasonal biting activities of all species occurred at average temperatures between 23 and 27°C. HBI was measured as 27.2%, 20.7%, 19.1%, and 23.0% for A. fluviatilis, A. stephensi, A. culicifacies and A. dthali, respectively. Conclusion: Vector control strategy depends upon mosquito behaviour. Therefore, using appropriate sampling methods based on mosquito behaviour is critical for malaria control planning. Exophilic/exophagic habit of mosquito vectors leads to fewer human bites, resulting in biting protection. Exophilic behaviour also requires specific larvicidal operations in order to prevent and control malaria transmission. © World Health Organization (WHO) 2020.