Testing for the occurrence of pilchard herpesvirus (PHV) in South African sardine Sardinops sagax

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dc.contributor.authorMacey, B.M.
dc.contributor.authorChristison, K.W.
dc.contributor.authorde Goede, J.
dc.contributor.authorHutchings, L.
dc.contributor.authorvan der Lingen, C.D.
dc.date.accessioned2018-05-16T08:53:24Z
dc.date.available2018-05-16T08:53:24Z
dc.date.issued2016
dc.description.abstractCatches of South African sardine Sardinops sagax have declined in recent years from about 200 000 t harvested annually during the period 2002–2006 to less than 100 000 t. Consequently, some companies are now importing sardine from sources elsewhere in the world to meet local demand for canned sardine and bait. This importation has the potential for the introduction of sardine pathogens, in particular the pilchard herpesvirus (PHV), which could have a negative impact on the currently small South African sardine population. The aims of the current study were to determine whether PHV is present in the local sardine population and to assess the extent to which sardine is being imported into the country and whether imported fish are from countries where the virus is known to be endemic. Fish sampled from South Africa’s western (n = 150), southern (n = 182) and eastern (n = 96) putative stocks of S. sagax were analysed for the presence of PHV using real-time quantitative polymerase chain reaction (qPCR). The origin and amount of potentially infected material imported into South Africa during the period 2010–2014 was also assessed. None of the South African sardine collected during this study tested positive for PHV, suggesting that active PHV was not prevalent in the local population of S. sagax at the time of this study. Between 56 000 and 71 000 t of frozen sardine was imported annually into South Africa from countries where S. sagax occurs, including some from areas (Australia and New Zealand) where sardine infection by PHV is known to be endemic. Hence, it is plausible that the PHV pathogen, capable of perpetuating infections in local sardine populations, could be imported into South Africa along with the importation of frozen sardine. Should local sardine be naïve to the virus, as suggested by this study, then the population is at risk of infection and precautions against such must be taken.en_US
dc.description.accreditationDHET
dc.identifier.citationMacey, B.M. et al. (2016). Testing for the occurrence of pilchard herpesvirus (PHV) in South African sardine SardinopsSagax African Journal of Marine Science, 38(2): 269-273 https://doi.org/10.2989/1814232X.2016.1182069en_US
dc.identifier.issn1814-232X
dc.identifier.urihttps://doi.org/10.2989/1814232X.2016.1182069
dc.identifier.urihttp://hdl.handle.net/10566/3678
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherNational Inquiry Services Centre (NISC)en_US
dc.rightsThis is the author version of the article published online at: https://doi.org/10.2989/1814232X.2016.1182069
dc.status.ispeerreviewedTRUE
dc.subjectDisease Surveyen_US
dc.subjectImport Risk Assessmenten_US
dc.subjectPolymerase Chain Reaction (PCR)en_US
dc.titleTesting for the occurrence of pilchard herpesvirus (PHV) in South African sardine Sardinops sagaxen_US
dc.typeArticleen_US

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