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	Microbial&nbsp;diversity&nbsp;on&nbsp;skins&nbsp;in&nbsp;two&nbsp;species&nbsp;of&nbsp;Antarctic&nbsp;fish,&nbsp;Trematomus&nbsp;bernacchii&nbsp;and&nbsp;Notothenia&nbsp;coriiceps
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doi:10.16535/j.cnki.dlhyxb.2018-292

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Journal of Dalian Fisheries University ›› 2019, Vol. 34 ›› Issue (6) : 792-797. DOI: 10.16535/j.cnki.dlhyxb.2018-292

Microbial diversity on skins in two species of Antarctic fish, Trematomus bernacchii and Notothenia coriiceps

ZHAO Wen-jing1, XU Qiang-hua1,2,3,4*

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Abstract

Microbial diversities on skins were investigated in total genomic DNA extracted from two species of Antarctic fish Trematomus bernacchii(TB) and Notothenia coriiceps(NC) collected from open waters in Zhongshan Station, Antarctica, China, using 16S rDNA and through high-throughput sequencing techniques and by bioinformatics analysis to evaluate the skin microbial diversities of Antarctic fishes and unfold the differences in the Antarctic fish skin microbial communities. A total of 378 517 effective sequences and 740 OTUs (Operational Taxonomic Units, OTUs) were obtained from three individuals from the Antarctic fishes. The dominant bacterial communities in the two Antarctic fishes were listed as Firmicutes, Proteobacteria, Deinococcus-Thermus, Bacteroidetes, Tenericutes and Actinobacteria at phylum level, with higher abundance of Firmicutes, Proteobacteria and Bacteroidetes. At the genus level, the dominant bacteria communities were Anoxybacillus, Vulcaniibacterium, Bacillus, Psychrobacter, Ralstonia, Brevundimonas, Pseudomonas and Methylophilus. Distance algorithm analyses revealed that there was little significant difference between individuals of the same Antarctic fish species, without significant difference between the two Antarctic fish species (P>0.05). In conclusion, the microbial diversity between two Antarctic fish was compared by using high-throughput sequencing techniques. Firmicutes, Proteobacteria and Bacteroidetes were the dominant bacterila communities in the skins, without significant difference, in the two Antarctic fish species.

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Trematomus bernacchii / Notothenia coriiceps / high-throughput sequencing / microbial diversity

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ZHAO Wen-jing, XU Qiang-hua.

Microbial diversity on skins in two species of Antarctic fish, Trematomus bernacchii and Notothenia coriiceps

[J]. Journal of Dalian Fisheries University, 2019, 34(6): 792-797 https://doi.org/10.16535/j.cnki.dlhyxb.2018-292

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Microbial diversity on skins in two species of Antarctic fish, Trematomus bernacchii and Notothenia coriiceps