Abstract
The tolerance of the invasive amphipod Dikerogammarus villosus to fluoride (F−) toxicity was examined via laboratory experiments. 96-h LC50 and 240-h NOEC values were estimated to be 5.8 and 0.95 mg F−/L, respectively. Average whole-body fluoride content in control amphipods was 27.6 μg F−/g dry weight, whereas in exposed amphipods it ranged from 3,637 to 16,994 μg F−/g dry weight. All these results indicate that D. villosus is a very sensitive species to fluoride toxicity. Overall it is concluded that the potential risk of invasion for D. villosus in either natural or polluted freshwater ecosystems, exhibiting relatively high fluoride levels (at least ten-fold higher than the average freshwater background level of 0.15 mg F−/L), must be low.
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Acknowledgments
We thank the Spanish Ministry of Science and Innovation (project CGL2006-06804/BOS) for the funds to carry out this research. We also want to thank the Spanish Ministry of Education and the Italian Ministry of Public Education, as well as the University of Alcalá and the University of Padova, for providing additional funds and logistical support. Cristina Gonzalo is currently supported by a doctoral contract from the Spanish Ministry of Education. Lastly, we are grateful to an anonymous reviewer for valuable comments and suggestions.
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Gonzalo, C., Camargo, J.A., Masiero, L. et al. Fluoride Toxicity and Bioaccumulation in the Invasive Amphipod Dikerogammarus villosus (Sowinsky, 1894): a Laboratory Study. Bull Environ Contam Toxicol 85, 472–475 (2010). https://doi.org/10.1007/s00128-010-0132-8
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DOI: https://doi.org/10.1007/s00128-010-0132-8