Decaying Fish Dump PCBs in Alaska’s Lakes
Monday, March 26th, 2007This is a posted article from the Usenet newsgroup misc.fitness.weights, it had
some formatting errors (it looked like a hastily executed cut&paste job) which I
have attempted to correct.
Decaying fish dump PCBs in Alaska’s lakes.
18 September 2003
MICHAEL HOPKIN
Salmon travelling to Alaska’s lakes to spawn are carrying large doses of
industrial pollutants with them, a study has shown10.
Environmentalists fear that the accumulation of these compounds, called
polychlorinated biphenyls (PCBs), could have harmful consequences for the
region’s top carnivores: bears, eagles - and humans.
Each summer, millions of sockeye salmon (Oncorhynchus nerka) make the 1,000-km
trip from the North Pacific back to the lakes where they were born. After
spawning there, they die, and their carcasses decompose in the lakes’ sediment.
The fish arrive loaded with PCBs from their oceanic feeding grounds, report
(more…)