Behavioural effects on marine amphipods exposed to silver ions and silver nanoparticles. (September 2019)

• Record Type: Journal Article
• Authors: Vannuci-Silva, Monizze; Kohler, Shanelle; Umbuzeiro, Gisela de A.; Ford, Alex T.
• Is Part Of: Environmental pollution. Volume 252(2019):Part B
• Page Start: 1051
• Page End: 1058
• Publication Date: 2019-09
• Subjects: Silver nanoparticles -- Response to light -- Swimming velocity -- Echinogammarus marinus; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2019.06.005
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Behavioural responses to contaminants are an important endpoint in ecotoxicology because they link effects at biochemical or cellular levels to impacts on individual fitness. Due to the increasing use of silver in nanomaterials, studies of its effects on the behaviour of aquatic organisms are important to assess the risks of silver nanoparticles (AgNP) released into the environment. The aim of this work was to evaluate the behavioural effects of silver on the marine amphipod Echinogammarus marinus after exposure to AgNO3 via water and AgCl or AgNP via food. Swimming activity of the amphipods was tracked during 6 min alternating dark and light conditions. Animals swam slower and responded less to light at higher concentrations of silver in the water. No differences were found in the behaviour of animals exposed via feeding up to 28 days, hence, longer exposure times may be required for the observation of effects. This is the first work to appraise behaviour effects of silver ions and AgNP on marine amphipods. Although the protocol has been successfully developed for this purpose, specimens appeared to habituate to test conditions during the experiments. Therefore, the need for further understanding of baseline behaviours in these model organisms is discussed. Graphical abstract: Image 1 Highlights: Behavioural effects of Ag and AgNP exposure on a marine amphipod were evaluated. Specimens appeared to habituate to test conditions during the experiments. Animal's behaviours were affected at higher Ag concentrations in the water. Longer time would be required for the observation of effects in dietary exposure. A protocol was developed to assess behaviour effects of Ag in marine amphipods. Abstract : Exposure to silver can lead to adverse effects on swimming behaviour in marine amphipods.