Abstract
BackgroundSymbiotic bacteria play a critical role in insect’s biology. They also offer great opportunities to improve on current pest management techniques. In order to exploit and integrate the roles played by the gut microbiota on pest management programs, a better understanding of the structural organization of the microbial community in the Chinese citrus fly Bactrocera minax is essential.ResultsThe results revealed a total of 162 OTUs at 97% similarity interval. The dominant bacteria phyla were Proteobacteria, Bacteroidetes, Antinobacteria and Firmicutes, with the Proteobacteria having the highest relative abundance (more than 80% in all life stages). There was also a shift in the dominant OTUs from the early developmental stages to the late developmental stages and adult stages in B. minax. These OTUs related to Klebsiella pneumoniae, Providencia rettgeri and Enterobacter aerogenes, respectively. Six bacteria OTU were shared by all the life stages. These belonged to the Enterobacteriaceae and the Enterococcaceae families.ConclusionThe common bacteria groups shared by all the life stages and other fruit flies could be important targets for further research. This should aim towards realizing how these bacteria affect the biology of the fly and how their relationship could be exploited in the development of sustainable management strategies against fruit flies.
Highlights
The gut of most insects is colonized by microbial communities [1], which vary in diversity and function across the different insect groups [2]
16S Ribosomal ribonucleic acid (rRNA) bar-coded amplicon pyrosequencing and clustering into operational taxonomic units (OTU) A total of 57,888 sequences were obtained from the seven B. minax samples (BM1L, Bactrocera minax second instar larva (BM2L), Bactrocera minax third instar larva (BM3L), BME, Bactrocera minax pupa (BMP), BMM, Bactrocera minax adult female (BMF)) sequenced
The results revealed that the gut of the Chinese citrus fly harbors a large diversity of microorganisms belonging to 8 different phyla
Summary
The gut of most insects is colonized by microbial communities [1], which vary in diversity and function across the different insect groups [2]. The origin of gut bacteria are from horizontal or vertical transmissions and some important bacteria groups have evolved to develop intimate relations with insects [3]. In social insects such as the honey bee, social interaction often leads to the transfer of important gut bacteria [3, 4]. Symbiotic bacteria play a critical role in insect’s biology They offer great opportunities to improve on current pest management techniques. In order to exploit and integrate the roles played by the gut microbiota on pest management programs, a better understanding of the structural organization of the microbial community in the Chinese citrus fly Bactrocera minax is essential
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