Dataset Information

Hidden diversity and evolution of viruses in market fish.

ABSTRACT: Aquaculture is the fastest growing industry worldwide. Aquatic diseases have had enormous economic and environmental impacts in the recent past and the emergence of new aquatic pathogens, particularly viruses, poses a continuous threat. Nevertheless, little is known about the diversity, abundance and evolution of fish viruses. We used a meta-transcriptomic approach to help determine the virome of seemingly healthy fish sold at a market in Sydney, Australia. Specifically, by identifying and quantifying virus transcripts we aimed to determine (i) the abundance of viruses in market fish, (ii) test a key component of epidemiological theory that large and dense host populations harbour a greater number of viruses compared to their more solitary counterparts and (iii) reveal the relative roles of virus-host co-divergence and cross-species transmission in the evolution of fish viruses. The species studied comprised both shoaling fish-eastern sea garfish (Hyporhamphus australis) and Australasian snapper (Chrysophrys auratus)-and more solitary fish-eastern red scorpionfish (Scorpaena jacksoniensis) and largetooth flounder (Pseudorhombus arsius). Our analysis identified twelve potentially novel viruses, eight of which were likely vertebrate-associated across four viral families and that exhibited frequent cross-species transmission. Notably, the most solitary of the fish species studied, the largetooth flounder, harboured the least number of viruses while eastern sea garfish, a densely shoaling fish, had the highest number of viruses. These results support the emerging view that fish harbour a large and largely uncharacterised virome.

SUBMITTER: Geoghegan JL

PROVIDER: S-EPMC6208713 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Hidden diversity and evolution of viruses in market fish.

Geoghegan Jemma L JL Di Giallonardo Francesca F Cousins Kate K Shi Mang M Williamson Jane E JE Holmes Edward C EC

Virus evolution 20180701 2

Aquaculture is the fastest growing industry worldwide. Aquatic diseases have had enormous economic and environmental impacts in the recent past and the emergence of new aquatic pathogens, particularly viruses, poses a continuous threat. Nevertheless, little is known about the diversity, abundance and evolution of fish viruses. We used a meta-transcriptomic approach to help determine the virome of seemingly healthy fish sold at a market in Sydney, Australia. Specifically, by identifying and quant ...[more]

PMID: 30397510

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Dataset Information

Hidden diversity and evolution of viruses in market fish.

Publications

Hidden diversity and evolution of viruses in market fish.

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