Comparison of Vector Trapping Methods for Outdoor Biting Malaria Vector Surveillance in Thailand and Vietnam
Issued Date
2022-11-01
Resource Type
ISSN
00222585
eISSN
19382928
Scopus ID
2-s2.0-85142402006
Pubmed ID
36208216
Journal Title
Journal of Medical Entomology
Volume
59
Issue
6
Start Page
2139
End Page
2149
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Medical Entomology Vol.59 No.6 (2022) , 2139-2149
Suggested Citation
Ngoenklan R., Thanh Duong T., Duc Chinh V., Quang Thieu N., Hii J., Bangs M.J., Aum-Aung B., Suwonkerd W., Chareonviriyaphap T. Comparison of Vector Trapping Methods for Outdoor Biting Malaria Vector Surveillance in Thailand and Vietnam. Journal of Medical Entomology Vol.59 No.6 (2022) , 2139-2149. 2149. doi:10.1093/jme/tjac147 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/85390
Title
Comparison of Vector Trapping Methods for Outdoor Biting Malaria Vector Surveillance in Thailand and Vietnam
Other Contributor(s)
Abstract
The performances of the human-baited double net trap (HDNT) and the human-baited host decoy trap (HDT) methods were compared against the outdoor human landing catch (OHLC) method in Thailand and Vietnam. Two study sites were selected in each country: a rural village and a nearby forest setting. The three outdoor trap methods were rotated nightly between three set trapping positions, in a pre-assigned Latin square design. Volunteers were rotated following the trap rotation to avoid bias. The greatest number of adult mosquitoes was collected from the forest sites in both countries, showing Anopheles minimus (s.s.) Theobald (96.54%) and Anopheles dirus (s.s.) Peyton & Harrison (25.71%) as the primary malaria vectors in Thailand and Vietnam, respectively. At the Thai forest site, OHLC collected significantly more anopheline mosquitoes per trap night than HDNT and HDT, with mean ± standard error values of 14.17 ± 4.42, 4.83 ± 1.56, and 4.44 ± 1.45, respectively, whilst HDNT and HDT were significantly less productive at 0.34 times and 0.31 times, respectively, than OHLC in capturing anopheline mosquitoes. However, there were no significant differences among the three methods of trapping malaria vectors for the village site. At the Vietnamese forest site, HDNT achieved the highest performance in collecting Anopheline mosquitoes at 1.54 times compared to OHLC, but there was no significant difference between the two traps. The results suggested HDNT could be a possible alternative trap to OHLC in this area. Although HDT was less efficient at attracting Anopheline mosquitoes, it was highly efficient at trapping culicine mosquitoes.