Myxobacteriosis of juvenile salmonidae - an indicator of their weakening physiological status

An attempt was made to investigate the spread of gill myxobacteria in juvenile sea trout (Salmo trutta L.) and Atlantic salmon (Salmo salar L.) at the Žeimena salmonid hatchery and the dependence of the disease on the physiological status of the fish. Investigation results obtained in June 2000 show...

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Bibliographic Details
Main Authors: Virbickas, Juozas, Jankauskienė, Rūta, Skrodenytė-Arbačiauskienė, Vesta, Kazlauskienė, Nijolė, Vosylienė, Milda Zita, Lukšienė, Dalia
Format: Article in Journal/Newspaper
Language:Lithuanian
English
Published: 2002
Subjects:
Myxobacteria
Gill
Microflora
Juvenile sea trout and salmon
Physiological status
Liver
Haemotological parameters
Atlantic salmon
Salmo salar
Online Access:http://lmavb.lvb.lt/LMAVB:ELABAPDB5144656&prefLang=en_US
Description
Summary:An attempt was made to investigate the spread of gill myxobacteria in juvenile sea trout (Salmo trutta L.) and Atlantic salmon (Salmo salar L.) at the Žeimena salmonid hatchery and the dependence of the disease on the physiological status of the fish. Investigation results obtained in June 2000 showed that the growth, development, general physiological status of juvenile salmonids, as well as the presence of myxobacteria in the gill microflora had been markedly determined by various environmental factors: non-optimal temperature regime, physiologically unbalanced feed composition, lack of vitamins. As a result, the immune system in juvenile fish was weakened, resistance to environmental factors, including pathogenic microorganisms, reduced. Preliminary investigation into the gill myxobacteriosis of juvenile salmonids revealed the presence of the disease in the sampled fish from all rearing ponds of the hatchery.

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