27
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Nano-sized polystyrene affects feeding, behavior and physiology of brine shrimp Artemia franciscana larvae.

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Nano-sized polymers as polystyrene (PS) constitute one of the main challenges for marine ecosystems, since they can distribute along the whole water column affecting planktonic species and consequently disrupting the energy flow of marine ecosystems. Nowadays very little knowledge is available on the impact of nano-sized plastics on marine organisms. Therefore, the present study aims to evaluate the effects of 40nm anionic carboxylated (PS-COOH) and 50nm cationic amino (PS-NH2) polystyrene nanoparticles (PS NPs) on brine shrimp Artemia franciscana larvae. No signs of mortality were observed at 48h of exposure for both PS NPs at naplius stage but several sub-lethal effects were evident. PS-COOH (5-100μg/ml) resulted massively sequestered inside the gut lumen of larvae (48h) probably limiting food intake. Some of them were lately excreted as fecal pellets but not a full release was observed. Likewise, PS-NH2 (5-100µg/ml) accumulated in larvae (48h) but also adsorbed at the surface of sensorial antennules and appendages probably hampering larvae motility. In addition, larvae exposed to PS-NH2 undergo multiple molting events during 48h of exposure compared to controls. The activation of a defense mechanism based on a physiological process able to release toxic cationic NPs (PS-NH2) from the body can be hypothesized. The general observed accumulation of PS NPs within the gut during the 48h of exposure indicates a continuous bioavailability of nano-sized PS for planktonic species as well as a potential transfer along the trophic web. Therefore, nano-sized PS might be able to impair food uptake (feeding), behavior (motility) and physiology (multiple molting) of brine shrimp larvae with consequences not only at organism and population level but on the overall ecosystem based on the key role of zooplankton on marine food webs.

          Related collections

          Author and article information

          Journal
          Ecotoxicol. Environ. Saf.
          Ecotoxicology and environmental safety
          Elsevier BV
          1090-2414
          0147-6513
          Jan 2016
          : 123
          Affiliations
          [1 ] Department of Physical, Earth and Environmental Sciences, University of Siena, Italy.
          [2 ] Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Ireland.
          [3 ] Groningen Research Institute of Pharmacy, Division Pharmacokinetics, Toxicology and Targeting, University of Groningen, The Netherlands.
          [4 ] Department of Physical, Earth and Environmental Sciences, University of Siena, Italy. Electronic address: ilaria.corsi@unisi.it.
          Article
          S0147-6513(15)30095-6
          10.1016/j.ecoenv.2015.09.021
          26422775
          6c505113-4ae1-4576-9aab-ba1e5e76389f
          History

          Accumulation,Artemia franciscana larvae,Molting,Nanoplastics,Polystyrene,Zooplankton

          Comments

          Comment on this article