PhD Defense Seminar cum Oral Examination
Distribution and bionomics of Anopheles sinensis, and its role of the malaria transmission in Singapore
Speaker: Pang Sook Cheng
(Graduate Student Dept. of Biological Sciences, NUS)
Date: 13 January 2017, Friday
Venue: DBS Conference Room II (S1 Level 3, mezzanine)
Supervisor: Assoc Prof Li Daiqin
All are welcome
Abstract – Research on Anopheles mosquitoes has always been of low priority due to the malaria free status of Singapore since 1982. However, Anopheles sinensis were persistently found in localized malaria outbreaks in 2009 and kick started the investigation on the distribution, bionomics and the role of malaria transmission of this species. In this study, we confirmed the presence of A.sinensis Form A and the possible absence of Form B in Singapore.
Anopheles sinensis Form A was experimentally incriminated as a Plasmodium vivax vector and were found to be anthropophilic. Being the most widespread anopheline, they were present in a third of the total investigated sites and were actively seeking host throughout the night, especially before 1.00am. In the wild, their abundance positively correlative with the average and minimum temperature, but not rainfall.
Basic biological characteristics of A. sinensis were also pursue to further understand the fundamental knowledge to epidemiology of malaria. This study has revealed that A. sinensis could pose a malaria threat in urban Singapore, if the risks are not managed.