1 Section of Cellular and Metabolic Research, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, Københavns Universitet2 Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden3 Biology/Aquatic Ecology, Lund University, SE-223 62 Lund, Sweden4 Section VI. Building 18.4, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Københavns Universitet5 Section VI. Building 18.4, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Københavns Universitet
The use of nanoparticles in consumer products, for example, cosmetics, sunscreens, and electrical devices, has increased tremendously over the past decade despite insufficient knowledge about their effects on human health and ecosystem function. Moreover, the amount of plastic waste products that enter natural ecosystems, such as oceans and lakes, is increasing, and degradation of the disposed plastics produces smaller particles toward the nano scale. Therefore, it is of utmost importance to gain knowledge about how plastic nanoparticles enter and affect living organisms. Here we have administered 24 and 27 nm polystyrene nanoparticles to fish through an aquatic food chain, from algae through Daphnia, and studied the effects on behavior and metabolism. We found severe effects on feeding and shoaling behavior as well as metabolism of the fish; hence, we conclude that polystyrene nanoparticles have severe effects on both behavior and metabolism in fish and that commonly used nanosized particles may have considerable effects on natural systems and ecosystem services derived from them.
Environmental Science and Technology, 2015, Vol 49, Issue 1, p. 553-561