Optimal concentrations of three anesthetics for use with juvenile cobia (Rachycentron canadum) were determined using time-to-recovery and hematological datasets. Buffered MS-222, clove oil 2-phenoxyethanol (2-PE) examined. Juvenile exposed to each anesthetic at 24 °C. Based on time recovery, optimal doses MS-222 was as 120-mg L−1, that 2-PE, 0.4-mL L−1 and, oil, 5-mL L−1. The response anesthesi...

Total mercury (Hg) concentration was determined in the tissues of 10 pelagic fishes in the northern Gulf of Mexico, and dietary tracers (stable isotopes and fatty acids) were used to evaluate the relationship between Hg and feeding history. Highest Hg levels were observed in blue marlin (Makaira nigricans), carcharhinid sharks (Carcharhinus spp.), and little tunny (Euthynnus alletteratus), rang...