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Use of electroanaesthesia with freshwater teleosts: some physiological consequences in the rainbow trout, Salmo gairdneri Richardson
Author(s) -
Madden Jane A.,
Houston Arthur H.
Publication year - 1976
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1976.tb04694.x
Subject(s) - rainbow trout , salmo , biology , trout , respiratory system , fish <actinopterygii> , zoology , fishery , anatomy
Electroanaesthesia prompts both immediate and longer term alterations in the physiological status of the rainbow trout. These are not, by comparison with the related brook trout, more extensive than those associated with tricaine methane sulphonate (MS 222) anaesthesia. Changes in haemotological indices are minimized, while the spontaneous resumption of cardiovascular‐respiratory activity, and the character of variations in plasma electrolyte levels suggest that blood gas tensions and acid‐base status may be less affected by electroanaesthesia than by chemical anaesthesia. Moreover, recovery, in the control levels proceeded more rapidly in several instances. It is concluded that electroanaesthesia offers a useful alternative to chemical methods of anaesthesia.