Role of gut microbial biofilm of anopheline mosquitoes to control its vectorial attribute: A study in some areas of West Bengal

Abstract

It has been disclosed that mosquito gut should be focused to keep these vectors from transmitting malaria. Present study indicated that the bacterial populations found from the rural and suburban areas of West Bengal are gram negative and belonging to Enterobacteriaceae family. The growth rate of bacterial isolates of the above-mentioned areas exhibited exponential pattern. The midgut microbial biofilm has been reported to be associated with an inhibitory effect on the sporogonic development of Plasmodium in the intestine of anopheline mosquito. Hence, the identification of the predominant gut microbiota is of prime significance to introduce these within the midgut of Anopheles for the regulation of its vectorial attribute. The present findings also revealed that introduction of some antibiotics have positive impact on fecundity of mosquito. When Anopheles mosquito is treated with streptomycin and ampicilin the fecundity is increased 13–18% respectively. From the data it can be advocated that day-to-day increase of the usage of antibiotics markedly speed-up the disease transmission by escalating the reproductive potential of anopheline vectors. • The gut microbiota, isolated from Anopheles vagu,s captured from Hooghly, West Bengal belongs to Enterobacteriaceae family. • The study showed that the microbial biofilm is able to reduce the vectorial attribute of the mosquito. • The study indicates of using antibiotics in controlled way as it might be responsible for higher fecundity of the vector mosquito.