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Viral haemorrhagic septicaemia (VHS) in grayling, Thymallus thymallus L.
Author(s) -
MEIER W.,
WAHLI T.
Publication year - 1988
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1988.tb00747.x
Subject(s) - grayling , biology , rainbow trout , enteritis , spleen , outbreak , fish <actinopterygii> , virology , immunology , fishery , microbiology and biotechnology
. Two outbreaks of viral haemorrhagic septicaemia (VHS) have been detected in grayling, Thymallus thymallus L., in Switzerland, The affected fry showed a septicaemic haemorrhage. Due to their similar biotopes, the susceptibility of grayling and rainbow trout to the VHS virus has been compared. The mortality rates varied between 56 and 100% depending on the age of the fish and the infection dose, but no distinct loss‐associated difference occurred between grayling and rainbow trout when comparing the same age group and infection dose. Anaemia, scattered subcutaneous and intermuscular haemorrhages and enteritis were frequent macroscopic findings. The major histopathological changes included necrotic foci in the liver, spleen, intestinal mucosa and haematopoietic part of the kidney, whereas a severe tubulonephrosis was detectable in the urinary part of the kidney.