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Parasit Vectors

Title:		"Optimisation and field validation of odour-baited traps for surveillance of Aedes aegypti adults in Paramaribo, Suriname"
Author(s):		Visser TM; de Cock MP; Hiwat H; Wongsokarijo M; Verhulst NO; Koenraadt CJM;
Address:		"Laboratory of Entomology, Department of Plant Sciences, Wageningen University and Research, Wageningen, The Netherlands. tessa.visser@wur.nl. Laboratory of Entomology, Department of Plant Sciences, Wageningen University and Research, Wageningen, The Netherlands. Malaria Programme, Ministry of Health, Paramaribo, Suriname. Bureau of Public Health, Ministry of Health, Paramaribo, Suriname. National Centre for Vector Entomology, Institute of Parasitology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland"
Journal Title:		Parasit Vectors
Year:		2020
Volume:		20200306
Issue:		1
Page Number:		121 -
DOI:		10.1186/s13071-020-4001-y
ISSN/ISBN:		1756-3305 (Electronic) 1756-3305 (Linking)
Abstract:		"BACKGROUND: Emerging arboviral diseases like Zika, dengue and chikungunya that are transmitted by Aedes aegypti mosquitoes, are increasingly threatening human health. Blends of human-like synthetic chemical attractants can be used to attract host-seeking mosquitoes. The aim of this study was to test new combinations of traps and odour baits in the laboratory, followed by testing the best candidates in the field to improve Ae. aegypti monitoring and surveillance. METHODS: First, the BG-Suna trap was evaluated for capturing laboratory-reared Ae. aegypti by testing normal and inverted positions in screen cage tests. Secondly, the attractiveness of the MB5 blend, CO(2), and their combination was tested. Thirdly, we tested the attractiveness of different trap types (BG-Suna, BG-Sentinel, MM-X and CDC light trap). Finally, we confirmed laboratory results in the field in Paramaribo, Suriname, using the MB5 and BG-Lure odour blends, CO(2) and the BG-Sentinel and BG-Bowl trap using a Latin Square design. RESULTS: The MB5 blend in combination with CO(2) outperformed traps baited only with CO(2) or MB5 in screen cage tests (P < 0.0001). The BG-Sentinel trap performed equally well as the inverted BG-Suna and was taken to the field (P = 0.729). In the field, we captured Ae. aegypti, Cx. quinquefasciatus and Cx. nigripalpus. We confirmed the laboratory results and found that the combination of the MB5 blend and CO(2) almost doubled Ae. aegypti female captures (P = 0.004) and more than doubled Culex spp. female captures (P = 0.005) compared to using only CO(2). Interestingly, the MB5 blend outperformed the commercially available BG-Lure, in the BG-Sentinel (P < 0.001). The BG-Bowl also attracted Ae. aegypti when baited with the MB5 blend in similar numbers as the BG-Sentinel baited with the MB5 (P = 0.362). CONCLUSIONS: Our study demonstrated that the BG-Sentinel trap baited with the MB5 blend and CO(2) outperforms the current golden standard (BG-Sentinel trap with BG-Lure) for monitoring Ae. aegypti females and males, in both laboratory and field experiments. The BG-Bowl baited with the MB5 blend is a good candidate for home use. Finally, the results show that CO(2) is an indispensable component of the attractive blend"
Keywords:		"Aedes/physiology Animals Behavior, Animal/*physiology Carbon Dioxide/pharmacology Culex Male Mosquito Control/instrumentation/*methods Mosquito Vectors/*physiology *Odorants Pheromones Suriname Aedes aegypti Carbon dioxide Host-seeking Odour-baited traps;"
Notes:		"MedlineVisser, Tessa M de Cock, Marieke P Hiwat, Helene Wongsokarijo, Merril Verhulst, Niels O Koenraadt, Constantianus J M eng 734548/Horizon 2020 Research and Innovation Programme/ England 2020/03/08 Parasit Vectors. 2020 Mar 6; 13(1):121. doi: 10.1186/s13071-020-4001-y"