| sources and variations of mercury in tuna. | while the bulk of human exposure to mercury is through the consumption of marine fish, most of what we know about mercury methylation and bioaccumulation is from studies of freshwaters. we know little of where and how mercury is methylated in the open oceans, and there is currently a debate whether methylmercury concentrations in marine fish have increased along with global anthropogenic mercury emissions. measurements of mercury concentrations in yellowfin tuna caught off hawaii in 1998 show no ... | 2003 | 14717163 |
| selenium and mercury in pelagic fish in the central north pacific near hawaii. | protective effects of selenium against mercury toxicity have been demonstrated in all animal models evaluated. as interactions between selenium and mercury and their molar ratios in seafood are essential factors in evaluating risks associated with dietary mercury exposure, considering mercury content alone is inadequate. in this study, the absolute and molar concentrations of mercury and selenium were determined in edible portions from 420 individual fish representing 15 species of pelagic fish ... | 2007 | 17916947 |
| increase in mercury in pacific yellowfin tuna. | mercury is a toxic trace metal that can accumulate to levels that threaten human and environmental health. models and empirical data suggest that humans are responsible for a great deal of the mercury actively cycling in the environment at present. thus, one might predict that the concentration of mercury in fish should have increased dramatically since the industrial revolution. evidence in support of this hypothesis has been hard to find, however, and some studies have suggested that analyses ... | 2015 | 25645441 |