DOI: 10.1101/472001Nov 19, 2018Paper

Insights into the microbiota of Asian seabass (Lates calcarifer) with tenacibaculosis symptoms and description of sp. nov. Tenacibaculum singaporense

BioRxiv : the Preprint Server for Biology
Sou MiyakeHenning Seedorf

Abstract

Outbreaks of diseases in farmed fish remain a recurring problem despite the development of vaccines and improved hygiene standards on aquaculture farms. One commonly observed bacterial disease in tropical aquaculture of the South-East Asian region is tenacibaculosis, which is attributed to members of the Bacteroidetes genus Tenacibaculum, most notably T. maritimum. The impact of tenacibaculosis on fish microbiota remains poorly understood. In this study, we analysed the microbiota of different tissue types of commercially reared Asian seabass (Lates calcarifer) that showed symptoms of tenacibaculosis and compared the microbial communities to those of healthy and experimentally infected fish that were exposed to diseased farm fish. The microbiota of diseased farm fish was dominated by Proteobacteria (relative abundance±standard deviation, 74.5%±22.8%) and Bacteroidetes (18.07%±21.7%), the latter mainly comprised by a high abundance of Tenacibaculum species (17.6%±20.7%). In healthy seabass Proteobacteria had also highest relative abundance (48.04%±0.02%), but Firmicutes (34.2%±0.02%) and Fusobacteria (12.0%±0.03%) were the next two major constituents. Experimentally infected fish developed lesions characteristic for tenacibaculo...Continue Reading

Related Concepts

Bacterial Infections
Genome
Trichomonas vaginalis
Vaccines
Zebrafish
Asians
Description
Proteobacteria
Bacteroidetes
Lates calcarifer

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