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Resting behavior of malaria vectors in Mannar District of Sri Lanka with reference to zooprophylaxis

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dc.contributor.author Gunathilaka, P.A.D.H.N. en_US
dc.contributor.author Fernando, M.A.S.T. en_US
dc.contributor.author Hapugoda, M.D. en_US
dc.contributor.author Wijeyerathne, P. en_US
dc.contributor.author Wickremasinghe, A.R. en_US
dc.contributor.author Abeyewickreme, W. en_US
dc.date.accessioned 2015-06-25T08:13:18Z en_US
dc.date.available 2015-06-25T08:13:18Z en_US
dc.date.issued 2013 en_US
dc.identifier.citation Proceedings of the Annual Research Symposium, Faculty of Graduate Studies, University of Kelaniya. 2013; 14: 132-133. en_US
dc.identifier.uri en_US
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/8529 en_US
dc.description Annual Research Symposium Abstracts, FGS, University of Kelaniya, 28-29 November, 2013, Kelaniya en
dc.description.abstract Background: The most important factors for effective zooprophylaxis in reducing malaria transmission are the presence of predominate populations of a strongly zoophilic mosquitoes and domestic animals for their blood-meal. Methods: Resting behavior of anopheline mosquitoes was evaluated using indoor and outdoor mosquito collection techniques. Mosquitoes were captured using 389 outdoor cattle-baited traps and indoor hand catches in 5672 houses at 12 possible malaria sensitive areas situated 12 km apart; Pesali, Keeri, Erukkallampeddi, Moor, Vankalai, Narawallikulam, Vanchiyankulam, Arvanum, Arrippu, Kokkupadayan, Koolankulam and Pandaraveilli for 12 months (June 2012 to June 2013) on a weekly basis. These areas had mostly homogenous characteristics in vegetations and house type. All collected mosquitoes were identified using standard taxonomic keys. A hypothesis test was conducted to determine whether there is a difference between indoor and outdoor collections. Results: A total of 3986 anopheline mosquitoes were collected from both indoor (n= 3122) and outdoor (n= 864) collection techniques. Anopheles subpictus was found to account for over 97.5% (n= 3887) of Anopheles species collected in the study areas. Other species were; 1.4% An. peditaeniatus (n= 57), 0.6% An. varuna (n= 22), 0.3% An. pallidus (n= 10), 0.2% An. nigerrimus (n= 7), 0.05% An. tessellatus (n= 2), and 0.03% An. aconitus (n= 1). Only 3 species namely, An. subpictus (n= 485), An. tessellatus (n= 2) and An. aconitus (n= 1) were recorded from indoor hand catches. In experimental cattle-baited hut trials, An. subpictus (n= 3026) was found to have the highest exophilic tendency (96.9%) compared to other anophelines encountered. The hypothesis test suggests that there was a significant difference of An. subpictus attracted to cattle-baited traps and human dwellings (P = 0.008). Although the main vector An. culicifacies was absent, the presence of the secondary vector An. subpictus was observed in high numbers in the District. Conclusion: Exophilic and zoophilic tendencies of An. subpictus are conducive for zooprophylaxis. The study further indicates that zooprophylaxis may be a potential strategy for malaria control. It is recommended that in areas with a predominant An. subpictus population, cattle could be kept close to human dwellings to maximize the effects of zooprophylaxis. en_US
dc.language.iso en en_US
dc.publisher University of Kelaniya en_US
dc.subject.mesh Malaria en_US
dc.subject.mesh Insect Vectors en_US
dc.title Resting behavior of malaria vectors in Mannar District of Sri Lanka with reference to zooprophylaxis en_US
dc.type Conference Abstract en_US
dc.identifier.department Molecular Medicine en_US
dc.identifier.department Public Health en_US
dc.identifier.department Parasitology en_US


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