10-Day survival of Hyalella azteca as a function of water quality parameters

Ecotoxicology and Environmental Safety
Alireza JavidmehrInge Werner

Abstract

Estuarine systems are among the most impacted ecosystems due to anthropogenic contaminants; however, they present unique challenges to toxicity testing with regard to varying water quality parameters. The euryhaline amphipod species, Hyalella azteca, is widely used in toxicity testing and well suited for testing estuarine water samples. Nevertheless, the influence of relevant water quality parameters on test endpoints must be quantified in order to efficiently use this species for routine monitoring. Here, we studied the influence of five water quality parameters: electrical conductivity, pH, un-ionized ammonia, dissolved oxygen and temperature, on H. azteca survival in a water column toxicity test. A model was developed to quantify and predict the independent and interacting effects of water quality variables on 10-day survival. The model allows simultaneous assessment of multiple potential predictors recorded during the tests. Data used for modeling came from 1089 tests performed on ambient water samples over a period of three years (2006-2008). The final model reflects significant effects of predictors and their two-way interactions. The effect of each level of all predictors on survival probability of H. azteca was examined...Continue Reading

References

Feb 3, 2005·Environmental Toxicology and Chemistry·Jason F SandahlNathaniel L Scholz
Jul 30, 2005·Environmental Toxicology and Chemistry·Mark A CliffordRonald P Hedrick
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Jan 11, 2014·Environmental Toxicology and Chemistry·Donald P WestonMichael J Lydy

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Citations

Sep 11, 2020·The Science of the Total Environment·Corie A FultonMichael J Lydy
Sep 10, 2021·Journal of Toxicology and Environmental Health. Part a·Eva R KirilovskyAna Ferrari

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