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Evaluating the toxic effects of three priority hazardous and noxious substances (HNS) to rotifer Brachionus plicatilis

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Abstract

Hazardous and noxious substances (HNS) spill in the marine environment is an issue of growing concern, and it will mostly continue to do so in the future owing to the increase of high chemical traffic. Nevertheless, the effects of HNS spill on marine environment, especially on aquatic organisms are unclear. Consequently, it is emergent to provide valuable information for the toxicities to marine biota caused by HNS spill. Accordingly, the acute toxicity of three preferential HNS and sub-lethal effects of acrylonitrile on Brachionus plicatilis were evaluated. The median lethal concentration (LC50) at 24 h were 47.2 mg acrylonitrile L−1, 276.9 mg styrene L−1, and 488.3 mg p-xylene L−1, respectively. Sub-lethal toxicity effects of acrylonitrile on feeding behavior, development, and reproduction parameters of B. plicatilis were also evaluated. Results demonstrated that rates of filtration and ingestion were significantly reduced at 2.0, 4.0, and 8.0 mg L−1 of acrylonitrile. Additionally, reproductive period, fecundity, and life span were significantly decreased at high acrylonitrile concentrations. Conversely, juvenile period was significantly increased at the highest two doses and no effects were observed on embryonic development and post-reproductive period. Meanwhile, we found that ingestion rate decline could be a good predictor of reproduction toxicity in B. plicatilis and ecologically relevant endpoint for toxicity assessment. These data will be useful to assess and deal with marine HNS spillages.

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Acknowledgements

We thank reviewers for their valuable and constructive comments. We also thank all staffs at the Laboratory of Environmental Physiology of Aquatic Animal for the help with taking care of the rotifers.

Funding

This work was funded by the National Marine Hazard Mitigation Service, State Ocean Administration project of China (2015AA019).

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Correspondence to Luqing Pan.

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The authors declare that they have no conflict of interest.

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Responsible editor: Philippe Garrigues

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Zheng, L., Pan, L., Lin, P. et al. Evaluating the toxic effects of three priority hazardous and noxious substances (HNS) to rotifer Brachionus plicatilis . Environ Sci Pollut Res 24, 27277–27287 (2017). https://doi.org/10.1007/s11356-017-0298-2

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  • DOI: https://doi.org/10.1007/s11356-017-0298-2

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