Movement of stocks for aquaculture purposes can also increase the risk of spreading pathogens. The relationships between farmed and wild fish and disease transfer are complex and often difficult to disentangle. In Europe, however, serious epidemics of furunculosis and Gyrodactylus salaris in stocks of Atlantic salmon have been linked to movements of fish for aquaculture and re-stocking. Since the early 1990s, Whitespot and Yellowhead viruses have caused catastrophic, multimillion-dollar crop losses in shrimp farms across Asia. Both pathogens have recently appeared in farmed and wild shrimp populations in the United States,58 and the Whitespot virus has been reported in several countries in Central and South America (T. Flegel, personal communication;
D. V. Lightner, personal communication).
endangered populations of wild Atlantic salmon
Movement of stocks for aquaculture purposes can also increase the risk of spreading pathogens. The relationships between farmed and wild fish and disease transfer are complex and often difficult to disentangle. In Europe, however, serious epidemics of furunculosis and Gyrodactylus salaris in stocks of Atlantic salmon have been linked to movements of fish for aquaculture and re-stocking. Since the early 1990s, Whitespot and Yellowhead viruses have caused catastrophic, multimillion-dollar crop losses in shrimp farms across Asia. Both pathogens have recently appeared in farmed and wild shrimp populations in the United States,58 and the Whitespot virus has been reported in several countries in Central and South America (T. Flegel, personal communication;D. V. Lightner, personal communication).endangered populations of wild Atlantic salmon
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