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Metagenomic deep sequencing obtains taxonomic and functional profiles of Haemaphysalis longicornis that vary in response to different developmental stages and sexes

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Abstract

Ticks can transmit numerous pathogens and harbor diverse microbial communities. Considerable progress has been made in the characterization of the bacterial profiles of ticks, whereas other members of tick microbiota (such as fungi and viruses) and the functional characteristics of ticks warrant further exploration. To investigate the taxonomic and functional profiles and explore potential pathogens they were carrying, samples of different developmental stages and of both sexes of Haemaphysalis longicornis were collected in the present study and the metagenomic deep sequencing method was applied. Metagenomic deep sequencing results revealed that bacteria were predominant, followed by fungi, viruses, archaea and metazoans. Proteobacteria was the dominant phylum in the microbiota of H. longicornis. The abundance of microbial species varied significantly among groups, the bacteria of nymphs and female adults demonstrated unique characteristics, and the microbial community of males overlapped with those of nymphs and females. Functional annotation results demonstrated that the metagenomic sequences of the three groups were classified under metabolism, genetic information processing, environmental information processing and cellular processes. Differences in functional characteristics were observed in both the pathways composition and abundance of carbohydrate-active enzymes. Furthermore, whole metagenome sequencing helped to elucidate the diversity of pathogens carried by H. longicornis, which may facilitate further research attempting to prevent and control tick-borne diseases.

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Data availability

All metagenomics datasets were deposited in NCBI Sequence Read Archive (SRA) database with accession number: PRJNA659144.

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Funding

This research was supported by Development Plan Project of Shandong Province Science and Technology (No. 2017GSF221017).

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ZRL and ZZ conceived and designed the experiment. ZQ and YGF performed laboratory work, interpreted results, and compiled tables and figures. ZRL and ZQ wrote the first draft of the manuscript, and YGF and ZZ contributed to finalizing the paper. All authors contributed critically to the drafts and gave final approval for publication.

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Correspondence to Ruiling Zhang or Zhong Zhang.

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The author declares that they have no conflict of interest.

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Zhang, R., Zhang, Q., Yu, G. et al. Metagenomic deep sequencing obtains taxonomic and functional profiles of Haemaphysalis longicornis that vary in response to different developmental stages and sexes. Exp Appl Acarol 83, 285–300 (2021). https://doi.org/10.1007/s10493-020-00582-3

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  • DOI: https://doi.org/10.1007/s10493-020-00582-3

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