The Single and Combined Effects of Wildfire Runoff and Sediment-Bound Copper on the Freshwater Amphipod Hyalella azteca.

Environmental Toxicology and Chemistry
Raegan D PlompGregory G Pyle

Abstract

The frequency of wildfire is expected to increase with time as a function of climate change. Recent studies in our laboratory have demonstrated that pyrogenic polycyclic aromatic hydrocarbons can cause greater-than-additive effects in Hyalella azteca in the presence of low concentrations of Cu. We hypothesized that freshwater animals inhabiting Cu-contaminated sites, such as those in the vicinity of Cu mines, may be vulnerable to nonadditive toxicity from contaminants released by wildfires. To investigate the interaction between Cu and water conditioned by burnt wood ash (fire extract), we exposed H. azteca for 14 d to binary mixtures of 225 mg/kg Cu-enriched artificial sediment (225 mg Cu/kg) and a fire extract dilution series (12.5, 25, 50, 75, and 100%). All binary mixtures of Cu-enriched sediment and fire extract resulted in complete mortality with the exception of Cu-enriched sediment + 12.5% fire extract. The combination of Cu-enriched sediment with 12.5% fire extract had a more-than-additive effect on survival and tissue Cu concentration, but there was no reduction in growth or acetylcholinesterase activity compared to the 225 mg/kg Cu-contaminated sediment or fire extract control, respectively. Acetylcholinesterase acti...Continue Reading

References

Sep 23, 1997·Biochemical and Biophysical Research Communications·J J Kang, H W Fang
Apr 3, 2001·Nature Reviews. Neuroscience·H Soreq, S Seidman
Jun 14, 2002·Pharmacology, Biochemistry, and Behavior·Mohamed B Abou-DoniaWasiuddin A Khan
Dec 16, 2004·Environmental Science & Technology·Soumya Niyogi, Chris M Wood
May 12, 2005·The Science of the Total Environment·M A OlivellaF X C de Las Heras
Oct 26, 2005·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·M F FrascoL Guilhermino
Mar 15, 2006·Toxicological Sciences : an Official Journal of the Society of Toxicology·M S ShailajaSolimabi Wahidulla
Jan 31, 2012·Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia·Miroslav Pohanka
Jul 10, 2014·Environmental Science & Technology·Kevin D BladonMicheal Stone
Sep 20, 2015·Ecotoxicology and Environmental Safety·Gabriela M B HaverrothCristiane L Dalla Corte
Oct 6, 2015·Environmental Toxicology and Chemistry·Adrienne J BartlettVince P Palace
Jan 16, 2017·The Science of the Total Environment·Bruno NunesNelson Abrantes

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