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Home alone: the effects of isolation on uptake of a pharmaceutical contaminant in a social fish
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap.
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2016 (engelsk)Inngår i: Aquatic Toxicology, ISSN 0166-445X, E-ISSN 1879-1514, Vol. 180, s. 71-77Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A wide range of biologically active pharmaceutical residues is present in aquatic systems worldwide. As uptake potential and the risk of effects in aquatic wildlife are directly coupled, the aim of this study was to investigate the relationships between stress by isolation, uptake and effects of the psychiatric pharmaceutical oxazepam in fish. To do this, we measured cortisol levels, behavioral stress responses, and oxazepam uptake under different stress and social conditions, in juvenile perch (Percafluviatilis) that were either exposed (1.03 mu gl(-1)) or not exposed to oxazepam. We found single exposed individuals to take up more oxazepam than individuals exposed in groups, likely as a result of stress caused by isolation. Furthermore, the bioconcentration factor (BCF) was significantly negatively correlated with fish weight in both social treatments. We found no effect of oxazepam exposure on body cortisol concentration or behavioral stress response. Most laboratory experiments, including standardized bioconcentration assays, are designed to minimize stress for the test organisms, however wild animals experience stress naturally. Hence, differences in stress levels between laboratory and natural environments can be one of the reasons why predictions from artificial laboratory experiments largely underestimate uptake of oxazepam, and other pharmaceuticals, in the wild.

sted, utgiver, år, opplag, sider
Elsevier, 2016. Vol. 180, s. 71-77
Emneord [en]
Bioconcentration, Brain concentration, Isolation, Pharmaceutical pollution, Shoaling, Stress mediated take
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-130107DOI: 10.1016/j.aquatox.2016.09.004ISI: 000388777600007PubMedID: 27658223OAI: oai:DiVA.org:umu-130107DiVA, id: diva2:1064829
Tilgjengelig fra: 2017-01-13 Laget: 2017-01-11 Sist oppdatert: 2018-06-09bibliografisk kontrollert

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Heynen, MartinaFick, JerkerJonsson, MicaelKlaminder, JonatanBrodin, Tomas

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