Boy…… can we get overhyped anymore?
“We were frankly kind of startled,” said Nicholas Fisher, one of the researchers reporting the findings online Monday in the Proceedings of the National Academy of Sciences.
The levels of radioactive cesium were 10 times higher than the amount measured in tuna off the California coast in previous years.
But scientists did not expect the nuclear fallout to linger in huge fish that sail the world because such fish can metabolize and shed radioactive substances.
To their surprise, tissue samples from all 15 tuna captured contained levels of two radioactive substances – ceisum-134 and cesium-137 – that were higher than in previous catches.
The results “are unequivocal. Fukushima was the source,” said Ken Buesseler of the Woods Hole Oceanographic Institution, who had no role in the research.
“That’s a big ocean. To swim across it and still retain these radionuclides is pretty amazing,” Fisher said.
So said both HuffPo and Fox….. Then there’s ERL…….
“Our work suggests that Pacific bluefin tuna were exposed to enough radioactivity off Japan to measure it months later in California,” Dan Madigan of Stanford University told environmentalresearchweb. “This means that bluefin and other migratory animals may carry this signal if they have come from Japan in recent months. This suggests the use of these radioactive isotopes as tracers of movement in the Pacific Ocean on a large scale.”
Madigan and colleagues from Stony Brook University, US, found 134Caesium and 137Caesium in 15 two-year-old Pacific bluefin tuna (Thunnus orientalis) caught near San Diego in August 2011. The fish spawns in the western Pacific; some juveniles stay in Japanese waters while others swim east to the California Current Large Marine Ecosystem, generally when they are around a year old. That means all two-year-old Pacific bluefin caught during summer in the Eastern Pacific must have migrated recently.
“After the Fukushima accident, there was a lot of attention to the possibility that fish may accumulate and transport radioactive material,” said Madigan. “Since Pacific bluefin are known to migrate across the Pacific, we chose to test them for two elements of radioactive caesium.”
You can read the rest here….. http://environmentalresearchweb.org/cws/article/news/49804
Notice how the quoted Fisher isn’t even mentioned in the ERL article? Surprised?