Detection of diverse Wolbachia 16S rRNA sequences at low titers from malaria vectors in Kayin state, Myanmar

Abstract

<ns4:p> <ns4:bold>Background</ns4:bold> <ns4:bold>:</ns4:bold> Natural <ns4:italic>Wolbachia</ns4:italic> infections in malaria mosquitoes were recently reported in Africa, and negatively correlated with the development of <ns4:italic>Plasmodium falciparum</ns4:italic> in the vectors. The occurrence and effects of <ns4:italic>Wolbachia</ns4:italic> infections outside Africa have not been described and may have been underestimated. </ns4:p> <ns4:p> <ns4:bold>Methods</ns4:bold> <ns4:bold>:</ns4:bold> Mosquitoes were collected by human-landing catch during May and June 2017 in ten villages in Kayin state, Myanmar. Closely related species of malaria vectors were identified with molecular assays. 16S rRNA <ns4:italic>Wolbachia</ns4:italic> DNA sequences were detected with quantitative real-time PCR. </ns4:p> <ns4:p> <ns4:bold>Results:</ns4:bold> Low titer of <ns4:italic>Wolbachia</ns4:italic> DNA was detected in 13/370 samples in six malaria vector species. Sequences were diverse and different from those described in the African malaria mosquitoes. </ns4:p> <ns4:p> <ns4:bold>Conclusion:</ns4:bold> The detection of <ns4:italic>Wolbachia</ns4:italic> DNA in malaria mosquitoes from Kayin state warrants further investigations to understand better the ecology and biology of <ns4:italic>Anopheles</ns4:italic> - <ns4:italic>Wolbachia</ns4:italic> interactions in Southeast Asia. </ns4:p>