Infectious agent detections in archived Sockeye salmon (Oncorhynchus nerka) samples from British Columbia, Canada (1985-94)

© 2019 The Authors. Journal of Fish Diseases Published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Journal of fish diseases. - 1998. - 42(2019), 4 vom: 11. Apr., Seite 533-547
1. Verfasser: Thakur, Krishna K (VerfasserIn)
Weitere Verfasser: Vanderstichel, Raphaël, Kaukinen, Karia, Nekouei, Omid, Laurin, Emilie, Miller, Kristina M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Journal of fish diseases
Schlagworte:Journal Article BioMark Fraser River Skeena Sockeye salmon archived infectious agents
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520 |a In response to concerns that novel infectious agents were introduced through the movement of eggs as Atlantic salmon aquaculture developed in British Columbia (BC), Canada, we estimated the prevalence of infectious agents in archived return-migrating Sockeye salmon, from before and during aquaculture expansion in BC (1985-94). Of 45 infectious agents assessed through molecular assays in 652 samples, 23 (7 bacterial, 2 viral and 14 parasitic) were detected in liver tissue from six regions in BC. Prevalence ranged from 0.005 to 0.83 and varied significantly by region and year. Agent diversity ranged from 0 to 12 per fish (median 4), with the lowest diversity observed in fish from the Trans-Boundary and Central Coast regions. Agents known to be endemic in Sockeye salmon in BC, including Flavobacterium psychrophilum, Infectious haematopoietic necrosis virus, Ceratonova shasta and Parvicapsula minibicornis, were commonly observed. Others, such as Kudoa thyrsites and Piscirikettsia salmonis, were also detected. Surprisingly, infectious agents described only recently in BC salmon, Ca. Branchiomonas cysticola, Parvicapsula pseudobranchicola and Paranucleospora theridion, were also detected, indicating their potential presence prior to the expansion of the aquaculture industry. In general, our data suggest that agent distributions may not have substantially changed because of the salmon aquaculture industry 
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700 1 |a Vanderstichel, Raphaël  |e verfasserin  |4 aut 
700 1 |a Kaukinen, Karia  |e verfasserin  |4 aut 
700 1 |a Nekouei, Omid  |e verfasserin  |4 aut 
700 1 |a Laurin, Emilie  |e verfasserin  |4 aut 
700 1 |a Miller, Kristina M  |e verfasserin  |4 aut 
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