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Haematological assessment of the effects of the anaesthetic MS 222 in natural and neutralized form in three freshwater fish species: intraspecies differences
Author(s) -
Smit G. L.,
Hattingh J.,
Burger A. P.
Publication year - 1979
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.1095-8649.1979.tb03673.x
Subject(s) - cyprinus , biology , carp , trout , salmo , zoology , fish <actinopterygii> , common carp , freshwater fish , fishery
The effects of different concentrations of natural MS 222 and neutralized MS 222 were studied on the haematology of Cyprinus carpio, Sarotherodon mossambicus and Salmo gairdneri . As judged from the results, MS 222, which is acidic in nature, produced haemo‐concentration effects in all species studied, being least in the trout followed by carp and Sarotherodon mossambicus . These differences are ascribed to acid‐base regulatory functions and metabolic activities of the fish species investigated. The use of neutralized MS 222 improved the haematological profiles markedly and resulted in stabilization of acid‐base parameters and red blood cells sizes and numbers. Haemoconcentration effects, however, still persisted. Trout were found to be more susceptible to the stress of MS 222 anaesthesia than carp and Sarotherodon mossambicus .