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Title
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Interactive effects of 3,4-DCA and temperature on the annual killifish Nothobranchius furzeri
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Author
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Abstract
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| Although aquatic organisms are increasingly exposed to pollutants and abnormally high temperatures as a consequence of climate change, interactive effects between those stressors remain poorly assessed. Especially in ectotherms, such as fish, increases in ambient temperature are expected to affect fitness-related traits and physiology. We used the turquoise killifish Nothobranchius furzeri to study the effects of a range of 3,4-dichloroaniline concentrations (0, 50, 100 mu g/L) in combination with two temperature conditions (control and control +4 degrees C) during four months of exposure. As part of an integrated multi-level approach, we quantified effects on classic life history traits (size, maturation time, body mass, fecundity), critical thermal maximum and physiology (energy reserves and stress-associated enzymatic activity). While no interactive effects of 3,4-DCA exposure and increased temperature emerged, our results do show a negative effect of 3,4-DCA on thermal tolerance. This finding is of particular relevance in light of increasing temperatures under climate change. Due to increases in pest species and faster degradation of 3,4-DCA under higher temperatures, increased use of the pesticide is expected under climate change which, in turn, could result in a decreased tolerance of aquatic organisms to high temperatures. |
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Language
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English
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Source (journal)
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Aquatic toxicology. - Amsterdam
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Publication
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Amsterdam
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2019
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ISSN
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0166-445X
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DOI
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10.1016/J.AQUATOX.2019.05.009
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Volume/pages
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212
(2019)
, p. 146-153
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ISI
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000472694000016
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Pubmed ID
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31128415
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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