Abstract
AbstractAcute and early life stage toxicity tests were conducted with trivalent chromium and steelhead trout (Salmo gairdneri). A 96‐h LC50 of 4,400 μg/L chromium was obtained with two‐month‐old juvenile fish. Early life stage exposure from newly fertilized eggs to 30‐d post‐swimup produced complete mortality at 495 μg/L, and significantly reduced survival to hatch and to the end of the test at 157 and 89 μg/L, respectively. An early life stage test started with eyed eggs produced similar results, with hatching survival significantly reduced at 271 μg/L. An acute test conducted with fish surviving the early life stage test showed that no acclimation resulted from previous chromium exposure.
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