کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6307649 | 1618837 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of dispersed crude oil on cardiac function in seabass Dicentrarchus labrax
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
In this study, the impact of dispersed oil was assessed in Dicentrarchus labrax, a fish frequently used as an oil contamination indicator species. Fish were exposed for 48Â h to (mechanically and chemically) dispersed oil and dispersant alone. The impact of these exposure conditions was assessed on cardiac function by measuring (i) the contraction strength, the contraction and the relaxation speeds (ii) the cardiac energy metabolism using respirometry on permeabilized cardiac fibers. Compared to control, the increase of polycyclic aromatic metabolites observed in the bile indicated oil contamination in our fish. Following 48Â h of oil exposure at realistic oil concentrations, alterations of cardiac performances were observed. A decrease in contraction strength, contraction and relaxation speeds was observed in the presence of oil without effect of dispersant on these three parameters. Looking at cardiac energy metabolism, dispersant alone decreases all the activity of the respiratory chain and increases the proton leak. From these results, it appears that the observed decrease in cardiac performance in fish exposed to oil was not linked to a decrease in energy availability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 134, September 2015, Pages 192-198
Journal: Chemosphere - Volume 134, September 2015, Pages 192-198
نویسندگان
Florine Tissier, Matthieu Dussauze, Nina Lefloch, Michael Theron, Philippe Lemaire, Stéphane Le Floch, Karine Pichavant-Rafini,