Premium
THE SURVIVAL OF RAINBOW TROUT ( SALMO GAIRDNERII RICHARDSON) AND PERCH ( PERCA FLUVIATILIS L.) AT VARIOUS CONCENTRATIONS OF DISSOLVED OXYGEN AND CARBON DIOXIDE
Author(s) -
ALABASTER J. S.,
HERBERT D. W. M.,
HEMENS J.
Publication year - 1957
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1957.tb00452.x
Subject(s) - rainbow trout , carbon dioxide , perch , oxygen , salmo , biology , trout , population , zoology , dissolved organic carbon , environmental chemistry , fishery , ecology , fish <actinopterygii> , chemistry , demography , organic chemistry , sociology
The relative importance of dissolved oxygen and dissolved carbon dioxide in determining the lethal effect of an environment for rainbow trout and perch has been investigated with an apparatus which controls the concentrations of these gases in a body of water. It is shown that concentrations of carbon dioxide which sometimes occur in polluted streams can more than double the minimum concentration of dissolved oxygen necessary for the survival of half a population of rainbow trout fingerlings for 24 hr. Increase in temperature between 12·5 and 19·5°C. shortens period of survival in solutions containing up to 67 p. p. m. CO 2 . Within the range of dissolved oxygen concentration which is lethal in the presence of 59 p. p. m. CO 2 or more, perch are more resistant than rainbow trout in the lower, but less resistant in the higher, oxygen concentrations. The relation between carbon dioxide concentration and the oxygen tension at which rainbow trout blood is half saturated with oxygen is similar to the relation between carbon dioxide concentration and the oxygen tension at which the median period of survival of this species is I hr.