An acute septicaemic disease of brown trout ( Salmo trutta) and Atlantic salmon ( Salmo salar) caused by a Pasteurella‐like organism

• Published in: Journal of Fish Biology
• Main Authors: Hårstein, Tore, Bullock, GrahamL.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1976
• Subjects: Norway; Atlantic salmon; Salmo salar
• Online Access: http://dx.doi.org/10.1111/j.1095-8649.1976.tb03903.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1976.tb03903.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1976.tb03903.x

Ulcerations of the skin associated with haemorrhagic petechiae of liver and kidneys, were the main signs of disease affecting salmon and brown trout in Norway. A death rate of 15–20% was estimated for the 5 month period of mid‐March‐August, although mortalities occurred throughout the year. Bacteriological examinations, involving 36 isolates, suggested the causual organism to be a Pasteurella although the DNA homology examination gave a G.C. ratio of 55.6 % which is high for Pasteurella as a group.