Title |
Effects of Zn and Ti Nanoparticles on the Survival and Growth of Sclerophrys arabica Tadpoles in a Two Level Trophic System
|
---|---|
Published in |
Bulletin of Environmental Contamination and Toxicology, September 2018
|
DOI | 10.1007/s00128-018-2449-7 |
Pubmed ID | |
Authors |
Dalal Al Mahrouqi, Sumaya Al Riyami, Michael 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. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 2 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 1 | 50% |
Members of the public | 1 | 50% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 20 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Master | 7 | 35% |
Researcher | 3 | 15% |
Unspecified | 1 | 5% |
Student > Bachelor | 1 | 5% |
Lecturer > Senior Lecturer | 1 | 5% |
Other | 2 | 10% |
Unknown | 5 | 25% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 4 | 20% |
Environmental Science | 3 | 15% |
Neuroscience | 2 | 10% |
Biochemistry, Genetics and Molecular Biology | 2 | 10% |
Unspecified | 1 | 5% |
Other | 2 | 10% |
Unknown | 6 | 30% |