A historical review of the key bacterial and viral pathogens of Scottish wild fish. Issue 12 (18th July 2017)

• Record Type: Journal Article
• Authors: Wallace, I S; McKay, P; Murray, A G
• Is Part Of: Journal of fish diseases. Volume 40:Issue 12(2017:Dec.)
• Page Start: 1741
• Page End: 1756
• Publication Date: 2017-07-18
• Subjects: disease interactions -- fin fish aquaculture -- pathogens -- Scottish wild fish; Fishes -- Diseases -- Periodicals; 639.3
• DOI: 10.1111/jfd.12654
• Languages: English
• ISSNs: 0140-7775

Abstract

Abstract: Thousands of Scottish wild fish were screened for pathogens by Marine Scotland Science. A systematic review of published and unpublished data on six key pathogens ( Renibacterium salmoninarum, Aeromonas salmonicida, IPNV, ISAV, SAV and VHSV) found in Scottish wild and farmed fish was undertaken. Despite many reported cases in farmed fish, there was a limited number of positive samples from Scottish wild fish, however, there was evidence for interactions between wild and farmed fish. A slightly elevated IPNV prevalence was reported in wild marine fish caught close to Atlantic salmon, Salmo salar L., farms that had undergone clinical IPN. Salmonid alphavirus was isolated from wild marine fish caught near Atlantic salmon farms with a SAV infection history. Isolations of VHSV were made from cleaner wrasse (Labridae) used on Scottish Atlantic salmon farms and VHSV was detected in local wild marine fish. However, these pathogens have been detected in wild marine fish caught remotely from aquaculture sites. These data suggest that despite the large number of samples taken, there is limited evidence for clinical disease in wild fish due to these pathogens (although BKD and furunculosis historically occurred) and they are likely to have had a minimal impact on Scottish wild fish.