Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 139, Issue -, Pages 129-135Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2018.05.009
Keywords
Gulf of Mexico; PAHs; Pelagic fish; Coryphaena hippurus; U-crit; Aerobic scope
Funding
- NRDA for the Deepwater Horizon Oil Spill (NOAA) [AB133C-11-CQ-0051]
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This study examined potential interactive effects of co-exposure to Deepwater Horizon (DWH) crude oil (similar to 30 mu g L-1 Sigma PAHs) for 24 h and either hypoxia (2.5 mg O-2 L-1; 40% O-2 saturation) or elevated temperature (30 degrees C) on the swimming performance of juvenile mahi-mahi (Coryphaena hippurus). Additionally, effects of shorter duration exposures to equal or higher doses of oil alone either prior to swimming or during the actual swim trial itself were examined. Only exposure to hypoxia alone or combined with crude oil elicited significant decreases in critical swimming speed (U-crit) and to a similar extent (similar to 20%). In contrast, results indicate that elevated temperature might ameliorate some effects of oil exposure on swimming performance and that effects of shorter duration exposures are either reduced or delayed.
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