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Similar Gut Bacterial Microbiota in Two Fruit-Feeding Moth Pests Collected from Different Host Species and Locations

Qiang Gong , Li-Jun Cao , Li-Na Sun , Jin-Cui Chen , Ya-Jun Gong , De-Qiang Pu , Qiong Huang , Ary A. Hoffmann , Shu-Jun Wei
Published: 28 November 2020
 by  MDPI
 in Insects
Insects , Volume 11; doi:10.3390/insects11120840

Abstract: 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), Carposina sasakii, and the oriental fruit moth (OFM), Grapholita molesta, collected from different orchards and host plant species. Gut microbiota of both species was mainly composed of bacteria from Proteobacteria, followed by Firmicutes. The two species shared bacteria from the genera Pseudomonas, Gluconobacter, Acetobacter, and Pantoea. When we compared two pairs of PFM and OFM populations collected from the same host species and the same orchard, there is no difference in alpha and beta diversity in gut microbiota. When we compared gut microbiota of the same species and host plant from different orchards, alpha and beta diversity was different in populations of PFM collected from two pear orchards but not in other comparisons. Our study suggests that the two pests share many features of gut microbiota and environment in orchards is a main factor influencing their gut microbiota.
Keywords: gut microbiota / host / Grapholita molesta / orchard / Carposina sasakii

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