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Histological effects of prolonged sublethal hypoxia on channel catfish Ictalurus punctatus (Rafinesque)
Author(s) -
SCOTT A. L.,
ROGERS W. A.
Publication year - 1980
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.1365-2761.1980.tb00401.x
Subject(s) - ictalurus , catfish , gill , biology , hyperaemia , hypoxia (environmental) , spleen , kidney , hyperplasia , necrosis , ictaluridae , anatomy , physiology , medicine , fish <actinopterygii> , fishery , endocrinology , immunology , chemistry , oxygen , blood flow , genetics , organic chemistry
. A vacuum degassing apparatus was used to subject channel catfish Ictalurus punctatus (Rafinesque) to sublethal hypoxia for 24, 48 or 72 h. Spleen, liver, gills, anterior kidney and posterior kidney from the catfish exhibited histopathological changes that included necrosis, hyperaemia, oedema, haemorrhage, hyperplasia and hypertrophy. Of the organs examined, gills were most affected by the hypoxic conditions. After 5 days of reacclimatization to normoxic conditions, channel catfish continued to exhibit histopathological effects of prolonged hypoxia.