Water pollutants mute smell [Archive] - Fly Fishing Forum

: Water pollutants mute smell

02-07-2007, 09:01 AM
Fascinating (and disturbing) cover article in the Jan 27 issue of Science News


describing how pollutants (herbicides, pesticides, copper, etc) adversely affect fish and invertebrates loss of smell to the point that salmon can't find their natal streams, lose the ability to detect predators, detect suitable partners, etc. Just 3 hours of exposure to waterborne copper reduced responses of juvenile coho to a typical alarm odor emitted by a wounded coho. In clean water, coho immediately seek refuge.

Just more evidence of the importance of controlling runoff of pollutants from industry, farming, roadways, etc.

02-07-2007, 10:26 AM
Interesting read. Thanks.

02-12-2007, 08:47 AM
Bill -

somehow missed this earlier... but I get a missing page on the link

disabling one of the primary devices of anadramous fish should not be taken lightly :mad:

02-12-2007, 08:53 AM
Try it again. I just tried it twice, first time it just sort of hung, second time went right through it.