Health Nature Cod The levels of harmful methylmercury (MeHg) found in fish may have spiked over the past three decades. That's according to scientists, who believe global warming could be to blame. Researchers created models to estimate that between the 1970s and 2000s, the levels of the substance in Atlantic bluefin tuna increased by 56 percent; and 23 percent in Atlantic cod. The authors of the paper published in the journal Nature pinned the climb to rising seawater temperatures after 1969. The toxin can be passed on from a mother to her fetus and has been linked to long-term neurocognitive problems in children, which can last into adulthood. In the U.S., 82 percent of the MeHg that people are exposed to comes from seafood in the diet. As much as 40 percent originates in fresh or canned tuna. MeHg occurs when microscopic organisms in soil and water combine mercury with carbon. This can enter the food chain, with predators at the top accumulating higher concentrations than other … [Read more...] about Climate Change Could Expose More Humans to Mercury in Seafood
Mercury in fish
Updated 10:33 am CDT, Sunday, April 21, 2019 FILE - In this May 16, 2018, file photo, an adult peregrine falcon circles near its nest on a ledge overlooking Lake Mead in Temple Bar, Ariz. A Nevada state wildlife biologist is finding that not even the fastest bird on Earth can escape mercury contamination. Joe Barnes tells the Las Vegas Review-Journal the toxic element is turning up in feathers of peregrine falcons from coast to coast, including at the Lake Mead National Recreation Area. (Andrea Cornejo/Las Vegas Review-Journal via AP, File) less FILE - In this May 16, 2018, file photo, an adult peregrine falcon circles near its nest on a ledge overlooking Lake Mead in Temple Bar, Ariz. A Nevada state wildlife biologist is finding that not even the ... more Photo: Andrea Cornejo, AP Photo: Andrea … [Read more...] about Biologist study finds mercury in predator peregrine falcons
As a young child, I recall one of my siblings breaking an old style thermometer, and my sense of wonder as I saw the silvery material from inside rolling around the floor, almost impossible to pick up. However, as I grew older I remember hearing the news reports of Japanese citizens poisoned by mercury in fish—fish contaminated by mercury dumped in Minamata Bay in the 1950s and ‘60s. And I learned that the intriguing roly-poly substance was not so innocent. Over the ensuing years, I heard more and more about the dangers of mercury, and its pervasiveness in our environment—particularly in the air with mercury vapors emitted from coal-fired power plants. We can’t see it, but like the dissolved mercury in fish, this airborne mercury enters our bodies unbeknownst to us and results in neurological and nervous system problems like birth defects and developmental issues.Unlike some contaminants, mercury accumulates in our systems, and there is no simple or easy way to … [Read more...] about Don’t roll back the mercury standard
Syracuse, N.Y. -- The levels of toxic chemicals in Onondaga Lake fish continue to fall, a sign that the decades-long lake cleanup is working, new reports show. The amount of mercury in the flesh of small prey fish fell 70 percent from 2009 to 2016, according to data provided by Honeywell and accepted by the state this year. In the lake's popular game fish, smallmouth bass and walleye, the amount of mercury in 2016 was half the level it was in 2009, the data show. PCB levels in fish have also fallen in that same time period: About 50 percent in walleye and 63 percent in bass. "It's moving in the right direction," said Charles T. Driscoll, the SU professor who has done research on mercury in the lake for decades. "It's right on track." The mercury isn't gone, however, and it won't be for a long time. The levels in smallmouth bass and walleye remain far higher than the standards set in 2005. Honeywell's 2016 data shows mercury levels in bass at 0.92 parts per million, about half … [Read more...] about Mercury in Onondaga Lake fish keeps falling, but there’s a long way to go
Kevin Rodenbaugh fished until 3 a.m. one day this week, went home, caught a few hours of sleep, and was back scrambling down rocks along the Schuylkill in Bridgeport at 9 a.m. The wiry 20-year-old whipped his medium-heavy rod with practiced ease. A plastic worm slashed through the air at the end of his braided line in search of live prey: smallmouth bass living near where water rushed over falls at the Norristown Dam. Rodenbaugh fishes up to six days a week for muskie, catfish and bass. “It’s like a little vacation,” he said. Are fish thriving in the Schuylkill? And what’s the overall health of the river? Those questions were raised through Curious Philly, our new question-and-response forum that allows readers to submit questions about their community in need of further examination. We set out to find answers. Rodenbaugh made a splash a few weeks ago when he caught a 45-inch muskie near the same spot on the … [Read more...] about What fish live in the Schuylkill and which are safe to eat?