wee
f
187
a
that the Columbia River salmon are also vory tomp2rature
sensitive.
Tho younz migrating sise salmon can stand 20 degrees
d.
ct
Uv
Contisrade, wiich is fine, for a number of results. Tho adul
‘
are probably even more resistant unless you get up into tenratures around 35 Centigrade where you have bacterial action taking
ever and discase comings in,
This is not so with the ones.
We noticed in our
rovular monitoving experiments that wo thought we cculd sce
some nortality in eos which we could attribute to fair incroases
in tomperature.
We ran a tenmparaiure test on ezgs of Chinsok
Y
salmon, and these 16 and 17 dosre2s you misht commare with
fish,
(Indicating) The blu
Ww
on
Dr, Patrick's quotation of yesterday fer some of the warm water
of normal tennveratures in the Coluuwbia Riyor over a poricd of
years.
We hanoened to vin this durinz,1952 aud, obviously,
this was probably a good or bad year to ren the thing because
it was the warmest year that we
These are
have actually soan out there.
s
oxnperdimental levels, and wa set the experinent up to
foliow the temporature of the Colunbia, introduced salmon est
at the time the fish were spawning and otserved the mortality
on the ezgs.
This was actually carricd through into the fingerlin:~
‘Rather interestinzly wea found that the lowest mortality
was below that norvoanl for the Coluwrwtbia Rivor.
It was a little