Influence of crude oil exposure on cardiac function and thermal tolerance of juvenile rainbow trout and European sea bass

• Published in: Environmental Science and Pollution Research
• Main Authors: Anttila, Katja, Mauduit, Florian, Le Floch, Stephane, Claireaux, Guy, Nikinmaa, Mikko
• Other Authors: University of Turku, Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre de documentation de recherche et d'expérimentations sur les pollutions accidentelles des eaux (Cedre), Cedre
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2017
• Subjects: Fish; ACL; Critical thermal maximum; salmon oncorhynchus-nerka; CTMAX; polycyclic aromatic-hydrocarbons; PAH; sole solea-solea; Arrhenius break point temperature; cardiorespiratory function; cod boreogadus-saida; Critical thermalmaximum; Heart rate; mahi coryphaena-hippurus; maximum heart-rate; Oil spill; petroleum-hydrocarbons; dicentrarchus-labrax; mullet liza-aurata; [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; Boreogadus saida
• Online Access: https://hal.science/hal-02571117; https://hal.science/hal-02571117/document; https://hal.science/hal-02571117/file/Anttila_etal_ESaPR_2017.pdf; https://doi.org/10.1007/s11356-017-9609-x

WOS:000408363200014 International audience Oil spills pose a threat to aquatic organisms. However, the physiological effects of crude oil on cardiac function and on thermal tolerance of juvenile fish are still poorly understood. Consequently, in this paper, we will present results of two separate experiments where we exposed juvenile rainbow trout and European sea bass to crude oil and made cardiac thermal tolerances and maximum heart rate (f(Hmax)) measurements after 1 week (rainbow trout) and 6-month recovery (sea bass). In both species, the f(Hmax) was lower in crude oil-exposed fish than in the control ones at temperatures below the optimum but this difference disappeared at higher temperatures. More importantly, the oil-exposed fish had significantly higher Arrhenius break point temperature for f (Hmax), which gave an estimate for optimum temperature, than the control fish in both species even though the exposure conditions and recovery times differed between species. The results indicated that exposure of juvenile fish to crude oil did not have a significant negative impact upon their cardiac performance in high temperatures and upper thermal tolerance increased when the fish were tested 1 week or 6 months after the exposure. Our findings suggest that the cardiac function and thermal tolerance of juvenile fish are relatively resistant to a crude oil exposure.