Sublethal effects of treated liquid effluent from a petroleum refinery. IV. Respiratory movements and coughing of rainbow trout

Rainbow trout increased the frequency of gill irrigation in linear relation to the concentration of treated refinery effluent. Full-strength effluent resulted in a significantly higher frequency than in clean water, but 50% and lower did not, because of variation in response. Coughing rate increased...

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Bibliographic Details
Published in:Aquatic toxicology 1983, Vol.4 (4), p.317-325
Main Authors: Westlake, G.F., Sprague, J.B., Brown, I.T.
Format: Article
Language:English
Subjects:
bioassay
Biological and medical sciences
coughing
effluent
Environmental pollutants toxicology
gill-purging
Medical sciences
oil refinery
Oncorhynchus mykiss
respiration
Salmo gairdneri
sublethal toxicity
Toxicology
Water
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Summary:Rainbow trout increased the frequency of gill irrigation in linear relation to the concentration of treated refinery effluent. Full-strength effluent resulted in a significantly higher frequency than in clean water, but 50% and lower did not, because of variation in response. Coughing rate increased sharply and was a less variable measure of response. A concentration of 50% effluent caused significantly more coughs than in clean water, while 25% did not. The eight samples of effluent caused little lethality at full strength, and average physico-chemical characteristics were near or below Canadian regulatory limits, except for elevated oil and grease. Coughing rate shows promise as a rapid initial method for sublethal screening or monitoring of refinery effluents.
ISSN:0166-445X
1879-1514
DOI:10.1016/0166-445X(83)90025-5