Similar gut bacterial microbiota in two fruit-feeding moth pests collected from different host species and locations

BioRxiv : the Preprint Server for Biology
Q. GongShu-Jun Wei


Numerous gut microbes are associated with insects, but their composition remains largely unknown for many insect groups, along with factors influencing their composition. Here, we compared gut bacterial microbiota of two co-occurring agricultural pests, the peach fruit moth (PFM) and the oriental fruit moth (OFM), collected from different orchards and host plant species. Gut microbiota of both species was mainly composed of bacteria from Proteobacteria, followed by Firmicutes.The twospecies shared bacteria from the generaPseudomonas, Gluconobacter, Acetobacter,and Pantoea, although endosymbiotic Wolbachiawas the most abundant genus in PFM andLactobacilluswas the most abundant in OFM. PFM tended to have lower diversity and richness of gut microbiota than OFM; however, only some of the comparisons were statistically significant. Orchards can influence gut microbiota in terms of richness, particularly for PFM, but not so much for diversity parameters. Functional prediction of gut microbiota showed that the top pathways are amino acid metabolism, translation, and membrane transport in both species, but their abundance varied between the two moth species. These results show that two fruit moths share many features of gut microbiota,...Continue Reading

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