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Study links warmer water temperatures to greater levels of mercury in fish http://apocadocs.com/s.pl?1381974600
In a lab experiment, researchers adjusted temperatures in tanks, tainted the killifish's food with traces of methylmercury and watched as the fish stored high concentrations of the metal in their tissue.
In a field experiment in nearby salt pools, they observed as killifish in warmer pools ate their natural food and stored metal in even higher concentrations, like some toxic condiment for larger fish that would later prey on them.
The observation was part of a study showing how killifish at the bottom of the food chain will probably absorb higher levels of methylmercury in an era of global warming and pass it on to larger predator fish, such as the tuna stacked in shiny little cans in the cupboards of Americans and other people the world over.
"The implication is this could play out in larger fish . . . because their metabolic rate is also increasing," said Celia Chen, a professor at Dartmouth College in New Hampshire and one of six authors of the study. "Methylmercury isn't easily excreted, so it stays. It suggests that there will be higher methylmercury concentrations in the fish humans eat as well."
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[Read more stories about:
heavy metals, overfishing, marine mammals, ocean warming, predator depletion]
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Finally! Something to solve the problem of overfishing!
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