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Environ Pollut. 2018 May;236:1014-1019. doi: 10.1016/j.envpol.2017.12.082. Epub 2018 Feb 12.

Single and combined effects of microplastics and mercury on juveniles of the European seabass (Dicentrarchus labrax): Changes in behavioural responses and reduction of swimming velocity and resistance time.

Author information

1
ICBAS - Institute of Biomedical Sciences of Abel Salazar, University of Porto, Department of Populations Study, Laboratory of Ecotoxicology (ECOTOX), Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; CIIMAR/CIMAR-LA - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Research Group of Ecotoxicology, Stress Ecology and Environmental Health (ECOTOX), Av. General Norton de Matos, S/n, 289, 4450-208 Matosinhos, Portugal; CAPES Foundation, Ministry of Education of Brazil, 70040-020 Brasília, DF, Brazil. Electronic address: lbarboza@ciimar.up.pt.
2
ICBAS - Institute of Biomedical Sciences of Abel Salazar, University of Porto, Department of Populations Study, Laboratory of Ecotoxicology (ECOTOX), Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; CIIMAR/CIMAR-LA - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Research Group of Ecotoxicology, Stress Ecology and Environmental Health (ECOTOX), Av. General Norton de Matos, S/n, 289, 4450-208 Matosinhos, Portugal. Electronic address: bioluis@ciimar.up.pt.
3
ICBAS - Institute of Biomedical Sciences of Abel Salazar, University of Porto, Department of Populations Study, Laboratory of Ecotoxicology (ECOTOX), Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; CIIMAR/CIMAR-LA - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Research Group of Ecotoxicology, Stress Ecology and Environmental Health (ECOTOX), Av. General Norton de Matos, S/n, 289, 4450-208 Matosinhos, Portugal. Electronic address: lguilher@icbas.up.pt.

Abstract

Microplastics and mercury are environmental pollutants of great concern. The main goal of the present study was to investigate the effects of these pollutants, both individually and in binary mixtures, on the swimming performance of juvenile European seabass, Dicentrarchus labrax. Microplastics alone, mercury alone and all the mixtures caused significant reduction of the swimming velocity and resistance time of fish. Moreover, changes in behavioural responses including lethargic and erratic swimming behaviour were observed. These results highlight that fish behavioural responses can be used as sensitive endpoint to establish the effects of contamination by microplastics and also emphasizes the need to assess the combined effects of microplastics and other environmental contaminants, with special attention to the effects on behavioural responses in fish and other aquatic species.

KEYWORDS:

Behaviour; European sea bass; Microplastics; Mixtures; Swimming performance

PMID:
29449115
DOI:
10.1016/j.envpol.2017.12.082
[Indexed for MEDLINE]
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