Copper Effects on Salmon Influenced by Salinity

juvenilecoho-web200From Estuary News:

“Nietzsche was wrong:
 what doesn’t kill you doesn’t necessarily make you stronger. Sublethal doses of toxic copper can reduce a salmon’s chances of survival, but new research suggests impacts may be different in saltier water.

A decade of research by David Baldwin of NOAA’s North
west Fisheries Science Center 
and other biologists has shown
 that in some situations, very 
low levels of dissolved copper interfere with a salmon’s ability to detect smells. This can 
be a matter of life or death: 
salmon rely on their olfac
tory sense to avoid predators,
 locate prey, and home in on
 their natal streams when they 
return from the ocean to spawn. … ”

Continue reading at Estuary News here: Copper Effects on Salmon Influenced by Salinity

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