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Multistress effects on goldfish (Carassius auratus) behavior and metabolism

Gandar, Allison and Jean, Séverine and Canal, Julie and Marty-Gasset, Nathalie and Gilbert, Franck and Laffaille, Pascal Multistress effects on goldfish (Carassius auratus) behavior and metabolism. (2016) Environmental Science and Pollution Research, 23 (4). 3184-3194. ISSN 0944-1344

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Official URL: http://dx.doi.org/10.1007/s11356-015-5147-6

Abstract

Crossed effects between climate change and chemical pollutions were identified on community structure and ecosystem functioning. Temperature rising affects the toxic properties of pollutants and the sensitiveness of organisms to chemicals stress. Inversely, chemical exposure may decrease the capacity of organisms to respond to environmental changes. The aim of our study was to assess the individual and crossed effects of temperature rising and pesticide contamination on fish. Goldfish, Carassius auratus, were exposed during 96 h at two temperatures (22 and 32 °C) to a mixture of common pesticides (S-metolachlor, isoproturon, linuron, atrazine- desethyl, aclonifen, pendimethalin, and tebuconazol) at two environmentally relevant concentrations (total concentrations MIX1=8.4 μg L−1 and MIX2=42 μg L−1). We investigated the sediment reworking behavior, which has a major ecological functional role. We also focused on three physiological traits from the cellular up to the whole individual level showing metabolic status of fish (protein concentration in liver and muscle, hepatosomatic index, and Fulton’s condition factor). Individual thermal stress and low concentrations of pesticides decreased the sediment reworking activity of fish and entrained metabolic compensation with global depletion in energy stores. We found that combined chemical and thermal stresses impaired the capacity of fish to set up an efficient adaptive response. Our results strongly suggest that temperature will make fish more sensitive to water contamination by pesticides, raising concerns about wild fish conservation submitted to global changes.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at http://link.springer.com/ The original PDF of the article can be found at Environmental Science and Pollution Research website : http://link.springer.com/article/10.1007/s11356-015-5147-6
HAL Id:hal-01449184
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Funders:
ANR-11-CEPL-008 The Global Environmental Changes and Societies (GEC&S) program
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Deposited By: Franck Gilbert
Deposited On:13 Dec 2016 18:49

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