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title Shorter lifetime of a soil invertebrate species when exposed to copper oxide nanoparticles in a full lifespan exposure test
authors Goncalves, MFM; Gomes, SIL; Scott-Fordsmand, JJ; Amorim, MJB
author full name Goncalves, Micael F. M.; Gomes, Susana I. L.; Scott-Fordsmand, Janeck J.; Amorim, Monica J. B.
title Shorter lifetime of a soil invertebrate species when exposed to copper oxide nanoparticles in a full lifespan exposure test
nationality internacional
language English
document type Article
abstract Toxicity tests that last the all life duration of the organisms are not common, instead, long-term tests usually include one reproductive cycle. In the present study we optimized and propose a lifespan (all life) term test using Enchytraeus crypticus (Oligochaeta). The effect of copper oxide nanoparticles (CuO-NPs) was assessed in this lifespan test and compared to copper salt (CuCl2), using the same effect concentrations on reproduction (EC50). Monitored endpoints included survival and reproduction overtime (202 days). Results from survival showed that CuO-NPs caused shorter life of the adults compared to CuCl2 (control LT50: 218 days > CuCl2 LT50: 175 days > CuO-NPs LT50: 145 days). The effect was even more amplified in terms of reproduction (control ET50: 158 days > CuCl2 ET50: 138 days > CuO-NPs ET50: 92 days). Results suggest that CuO-NPs may cause a higher Cu effect via a trojan horse mechanism. The use of lifespan tests brings a novel concept in soil ecotoxicity, the longevity. This is a particularly important aspect when the subject is nanomaterials toxicity, where longer term exposure time is expected to reveal unpredicted effects via the current short/long-term tests. The present study confirms this higher effect for CuO-NPs.
author address [Goncalves, Micael F. M.; Gomes, Susana I. L.; Amorim, Monica J. B.] Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal; [Goncalves, Micael F. M.; Gomes, Susana I. L.; Amorim, Monica J. B.] Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal; [Scott-Fordsmand, Janeck J.] Aarhus Univ, Dept Biosci, Vejlsovej 25,POB 314, DK-8600 Aarhus, Denmark
reprint address Gomes, SIL (reprint author), Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal.; Gomes, SIL (reprint author), Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal.
e-mail address susana.gomes@ua.pt
funding agency and grant number European Commission within FP7-SUN: SUstainable Nanotechnologies [604305]; CESAM [UID/AMB/50017]; FCT/MEC; FEDER; [SFRH/BPD/95775/2013]
funding text Thanks are due, for the financial support to the European Commission within FP7-SUN: SUstainable Nanotechnologies (G.A. No. 604305), to CESAM (UID/AMB/50017), to FCT/MEC through national funds, the co-funding by the FEDER, within the PT2020 Partnership Agreement and Compete 2020, and a post-doc grant to Susana Gomes (SFRH/BPD/95775/2013).
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cited reference count 61
publisher city LONDON
issn 2045-2322
29-character source abbreviation SCI REP-UK
iso source abbreviation Sci Rep
publication date MAY 2
year published 2017
volume 7
article number 1355
digital object identifier (doi) 10.1038/s41598-017-01507-8
page count 8
web of science category Multidisciplinary Sciences
subject category Science & Technology - Other Topics
document delivery number ET7BZ
unique article identifier WOS:000400449700030
link http://www.nature.com/articles/s41598-017-01507-8