Abstract
The relationships between symbionts and insects are complex, and symbionts usually have diverse ecological and evolutionary effects on their hosts. The phloem sap-sucking aphids are good models to study the interactions between insects and symbiotic microorganisms. Although aphids usually exhibit remarkable life cycle complexity, most previous studies on symbiotic diversity sampled only apterous viviparous adult females or very few morphs. In this study, high-throughput 16S rDNA amplicon sequencing was used to assess the symbiotic bacterial communities of eleven morphs or developmental stages of the social aphid Pseudoregma bambucicola. We found there were significant differences in bacterial composition in response to different morphs and developmental stages, and for the first time, we revealed male aphids hosted very different symbiotic composition featured with low abundance of dominant symbionts but high diversity of total symbionts. The relative abundance of Pectobacterium showed relatively stable across different types of samples, while that of Wolbachia fluctuated greatly, indicating the former may have a consistent function in this species and the latter may provide specific function for certain morphs or developmental stages. Our study presents new evidence of complexity of symbiotic associations and indicates strong linkage between symbiotic bacterial community and host age and morph.
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Data Availability
The raw sequencing data are deposited in the NCBI Sequence Read Archive (SRA) database with accession number PRJNA837194.
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We greatly thank Zhentao Cheng for taking and processing the aphid photos for Fig. 1.
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National Natural Science Foundation of China (Grant number: 31970446).
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X.H. and Q.L. conceived and designed the study. All the authors contributed to the data collection. Q.L. and H.Z. analyzed the data. X.H. contributed resources during the study. All the authors wrote and reviewed and the final manuscript.
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Liu, Q., Zhang, H. & Huang, X. Strong Linkage Between Symbiotic Bacterial Community and Host Age and Morph in a Hemipteran Social Insect. Microb Ecol 86, 1213–1225 (2023). https://doi.org/10.1007/s00248-022-02114-5
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DOI: https://doi.org/10.1007/s00248-022-02114-5