Markus Brinkmann found the same effects on rainbow and brook trout, two culturally and economically important fish widespread in North America.
“It seems almost like the fish are suffocating from the inside,” said University of Saskatchewan toxicologist Markus Brinkmann. “It’s not the nicest thing to observe.”
Brinkmann found the same effects on rainbow and brook trout, two culturally and economically important fish widespread in North America.“There’s plenty of oxygen . They seem not able to use the oxygen to do what a normal organism normally does, which is breathe.”Brinkmann said the effects occur at very low concentrations, less than a millionth of a gram per litre of water.That much 6PPD-quinone can be found outside the lab.Not all fish are vulnerable.
That’s because environmental legislation has removed other fish stressors, exposing the effect of 6PPD-quinone, Brinkmann said. Analytical methods have also improved, allowing researchers to isolate ever-smaller concentrations.
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