Effects of Zn and Ti Nanoparticles on the Survival and Growth of Sclerophrys arabica Tadpoles in a Two Level Trophic System

Bulletin of Environmental Contamination and Toxicology
Dalal Al MahrouqiMichael J Barry

Abstract

Under natural conditions pollutants rarely affect only a single trophic level. This study investigated the effects of titanium dioxide (Ti-NPs) and zinc oxide (Zn-NPs) nanoparticles on survival and growth of Sclerophrys arabica tadpoles exposed directly in water, indirectly through their food source (decomposing leaves), or a combination of both. Zn-NPs did not cause significant mortality. The LC50 for tadpoles exposed to Ti-NPs directly was 74.9 µg/L (95% CI 16.6-338.7 µg/L) and 18.3 µg/L (95% CI 6.5-51.9 µg/L) for tadpoles exposed directly and with pre-treated leaves. Tadpoles fed only pre-exposed food did not show significant mortality. Exposure route also affected growth. On average the tadpoles with the lowest body mass were found in the water-only exposures, followed by the water and leaf treatments. However, the tadpoles with the greatest body mass were in the treatments fed with leaves pretreated with Ti-NPs. This suggests that the NPs made their contents more available to the tadpoles.

References

Jun 1, 1990·Ecotoxicology and Environmental Safety·L MaltbyP Calow
Jul 26, 2008·Nature Nanotechnology·R David HolbrookKen D Cole
Sep 22, 2009·Environmental Science & Technology·M A KiserK Hristovski
May 10, 2011·Microbial Ecology·Arunava PradhanFernanda Cássio
Sep 22, 2012·Environmental Pollution·Hongbo MaStephen A Diamond
Dec 3, 2014·Journal of Hazardous Materials·Agathe BourEric Pinelli
May 2, 2017·The Science of the Total Environment·Daniel von SchillerArturo Elosegi

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