Detection of ostreid herpesvirus-1 in plankton and seawater samples at an estuary scale

Diseases of Aquatic Organisms
Olivia LiuRichard J Whittington

Abstract

Ostreid herpesvirus-1 (OsHV-1) is known to associate with particles in seawater, leading to infection and disease in the Pacific oyster Crassostrea gigas. The estuarine environment is highly complex and changeable, and this needs to be considered when collecting environmental samples for pathogen detection. The aims of this study were to (1) compare different aspects of collecting natural seawater and plankton samples for detection of OsHV-1 DNA and (2) determine whether detection of OsHV-1 DNA in such environmental samples has merit for disease risk prediction. The results of one experiment suggest that sampling on the outgoing tide may improve the detection of OsHV-1 DNA in seawater and plankton tow samples (odds ratio 2.71). This statistical comparison was not possible in 2 other experiments. The method (plankton tow or beta bottle) and depth of collection (range: 250-1250 mm) had no effect on the likelihood of detection of OsHV-1. OsHV-1 DNA was found at low concentrations in plankton tow and seawater samples, and only when outbreaks of mortality associated with OsHV-1 were observed in nearby experimental or farmed populations of C. gigas. This suggests that single point in time environmental samples of seawater or plankton...Continue Reading

References

Dec 18, 2004·The Journal of General Virology·Andrew J DavisonTristan Renault
Nov 18, 2008·Veterinary Microbiology·Toshifumi MinamotoZen'ichiro Kawabata
Feb 20, 2009·Journal of Fish Diseases·E HaramotoS Ohgaki
Nov 17, 2009·Applied and Environmental Microbiology·Mie N HonjoZen'ichiro Kawabata
Apr 20, 2010·Journal of Environmental Sciences (China)·Minglu ZhangBaoli Cai
Aug 10, 2010·Research in Veterinary Science·Toshifumi MinamotoZen'ichiro Kawabata
Oct 13, 2018·Nature Communications·Julien de LorgerilGuillaume Mitta

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Citations

Nov 28, 2020·Environment International·R J WhittingtonI Paul-Pont

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