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...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | Lithuanian English |
Published: |
2002
|
Subjects: | |
Online Access: | http://lmavb.lvb.lt/LMAVB:ELABAPDB5144656&prefLang=en_US |
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. |
---|