Journal of Vector Ecology (2017) 42, 325-334
Nattapol Marasri, Hans J. Overgaard, Anchana Sumarnrote, Kanutcharee Thanispong, Vincent Corbel and Theeraphap Chareonviriyaphap (2017)
Abundance and distribution of Anopheles mosquitoes in a malaria endemic area along the Thai-Lao border
Journal of Vector Ecology 42 (2), 325-334
Abstract: Malaria is an important public health problem in Thailand, especially along international borders. In this study, we conducted a longitudinal entomological survey in six villages and rubber plantation sites to address the spatio-temporal abundance and behavior of malaria vectors in Ubon Ratchathani Province along the Thailand-Laos border. Adult female mosquitoes were collected by human landing collections (indoor and outdoor) and by cattle bait collections twice per year, during rainy and dry seasons. Mosquitoes were morphologically identified and sibling species were determined by allele-specific PCR. Of the 10,024 Anopheles, 9,328 (93.1%) and 696 (6.9%) were collected during the rainy and dry seasons, respectively. A total of 9,769 (97.5%) and 255 (2.5%) was collected on cattle and human baits, respectively. Very few primary and secondary malaria vectors were collected, consisting of 12 specimens of An. dirus, eight An. minimus, and seven An. aconitus. Of the 152 specimens of the Maculatus Group, only three were identified to An sawadwongporni by molecular methods. The others were 112 An. rampae, a non-vector, that were not amplified or were misidentified as other non-vectors. The very low density of primary malaria vectors found in the study villages suggests that entomological risk and malaria transmission is higher in neighboring forest areas. Further studies on malaria vector distribution, as well as human behaviors, are needed to understand malaria transmission dynamics in the province and to develop suitable vector control methods.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Theeraphap Chareonviriyaphap, Vincent Corbel, Hans J. Overgaard
Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
general biology - morphology - evolution
