Concentration effects of Winogradskyella sp. on the incidence and severity of amoebic gill disease

• Published in: Diseases of Aquatic Organisms
• Main Authors: Embar-Gopinath, S, Crosbie, PBB, Nowak, BF
• Format: Article in Journal/Newspaper
• Language: English
• Published: Inter-Research 2006
• Subjects: Agricultural and Veterinary Sciences; Fisheries Sciences; Aquaculture; Atlantic salmon; Salmo salar
• Online Access: https://doi.org/10.3354/dao073043; http://www.ncbi.nlm.nih.gov/pubmed/17240751; http://ecite.utas.edu.au/42126

To study the concentration effects of the bacterium Winogradskyella sp. on amoebic gill disease (AGD), Atlantic salmon Salmo salar were pre-exposed to 2 different doses (108 or 1010 cells l-1) of Winogradskyella sp. before being challenged with Neoparamoeba spp. Exposure of fish to Winogradskyella sp. caused a significant increase in the percentage of AGD-affected filaments compared with controls challenged with Neoparamoeba only; however, these percentages did not increase significantly with an increase in bacterial concentration. The results show that the presence of Winogradskyella sp. on salmonid gills can increase the severity of AGD. Inter-Research 2006.