Sensitivity of early-life-stage golden trout to low pH and elevated aluminum

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Environmental Toxicology and Chemistry; (United States)

DOI:https://doi.org/10.1002/etc.5620120711· OSTI ID:5757987

DeLonay, A J ^[1]; Little, E E; Woodward, F; Brumbaugh, W G ^[2]; Farag, A M ^[3]; Rabeni, C F ^[4]

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1. Univ. of Missouri, Columbia, MO (United States). School of Natural Resources
2. National Fisheries Contaminant Research Center, Columbia, MO (United States). Fish and Wildlife Service
3. Univ. of Wyoming, Laramie, WY (United States). Dept. of Zoology and Physiology
4. Univ. of Missouri, Columbia, MO (United States). Missouri Cooperative Fish and Wildlife Research Unit

Early-life-stage golden trout (Oncorhynchus aguabonita) were exposed to acid and Al to examine the response and determine the sensitivity of a western, alpine salmonid to conditions simulating an episodic pH depression. Freshly fertilized eggs, alevins, and swim-up larvae were exposed for 7 d to one of 12 combinations of pH and Al, and surviving fish were held to 40 d post-hatch to determine the effect of exposure on subsequent survival and recovery. Golden trout are sensitive to conditions simulating episodic acidification events typically observed in the field. Significant mortality occurred when the pH of test waters was below 5.0 in the absence of Al or when pH was 5.5 in the presence of 100 [mu]g/L total Al. Behavioral impairments were sensitive indicators of low pH and Al stress. Impaired locomotory and feeding behavior occurred at pH 5.5 without Al and at Al concentrations [>=] [mu]g/L. In contrast, growth, RNA-to-DNA ratio, and whole-body ion concentration were relatively less sensitive indicators of sublethal acid and Al stress.

• OSTI ID: 5757987
• Journal Information: Environmental Toxicology and Chemistry; (United States), Journal Name: Environmental Toxicology and Chemistry; (United States) Vol. 12:7; ISSN 0730-7268; ISSN ETOCDK
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
AGE DEPENDENCE
ALUMINIUM
ANIMALS
AQUATIC ORGANISMS
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL INDICATORS
ELEMENTS
ENVIRONMENTAL IMPACTS
FISHES
METALS
PH VALUE
POLLUTION
RAIN
SENSITIVITY
SIMULATION
TOXICITY
TROUT
VERTEBRATES
WATER POLLUTION