TR Cascade River
 

Chas,

You might make one for Arnie and Chuck. Thanks, and we're looking forward
to it!

bruce h

TR Cascade River
 

"Yuji Sakuma" wrote:

I have three experiences with this sort of stuff.

Several years ago I talked to a biologist at the Tokul Creek steelhead
hatchery in Washington. He said that some times the fish return early
to the hatchery and they keep them in concrete pens until they ripen.
In one cast this was 4 months with no attempt to feed the fish. He
said the fish lost some weight, but the eggs developed normally and the
fish were released after the eggs were stripped from them. These were
7-10 pound fish that survived not eating for 4 months.

Another item was what we saw last summer on Rock Creek. The water was
too warm in the lower creek, so the fish migrated up to the upper
sections. This was easily a 10 to even 20 mile migration, and I think
that's common for Rainbows and Cutthroats.

I caught a Steelhead in the upper Cedar hears ago that had been tagged
3 days earlier at the Ballard locks. That's probably 20 to 30 liles of
swimming through t lakes and a river. The fish fought hard and tasted
fine.

Chas
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TR Cascade River
 

(Greg Pavlov) wrote:

In radio transmitter studies I've run across -
3 total - the mortality rates were relatively
low. The highest that I remember was around
18%.

I don't know about mortality, but the Oregon DFW put transmitters in
Chinook salmon on the Deschutes last year. I talked to a lady who was
driving up and down the river recording locations. They had a reward
for the transmitters. I didn't hear what they learned from the study.

Chas
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TR Cascade River
 

"Chas Wade" wrote in message

I don't know about mortality, but the Oregon DFW put transmitters in
Chinook salmon on the Deschutes last year. I talked to a lady who was
driving up and down the river recording locations. They had a reward
for the transmitters. I didn't hear what they learned from the study.

Chas
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San Juan Pictures at:
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I caught a wild buck steelhead of about 9# last year that had a transmitter
implanted. The fish was very aggressive and an extremely hard fighter, and
also had another fly besides mine in its jaw, from some other fisherman that
it had broken off.
Upon landing the fish I noticed what appeared to be a very heavy piece of
line sticking a few inches out of its mouth. When I attempted to snip this
off with my nippers just inside its mouth, to aid the fish in getting rid of
what I thought was another lure, I realized that it was the wire antennae
for a transmitter. Since this was a wild fish (unclipped adipose) I turned
it loose and watched it swim strongly off.



--
Bob Weinberger
La, Grande, OR

place a dot between bobs and stuff and remove invalid to send email

TR Cascade River
 

(Greg Pavlov) wrote:
On Wed, 14 Jan 2004 22:11:07 GMT, Chas Wade
wrote:

I don't know about mortality, but the Oregon DFW put transmitters in
Chinook salmon on the Deschutes last year. ...

One of the studies I read about involved steelhead migrating
up river somewhere in the NW. One of the things they noted
was that if a steelhead was caught (& released, of course...)
it usually headed back downstream for some distance and would
then "sulk" for a few days before heading back up.

There was a post with that info about a year ago, I think it was a
southern BC river, maybe the Squamish or the Coquahala (sp?)?

Chas
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TR Cascade River
 

Greg Pavlov wrote:

On Wed, 14 Jan 2004 07:31:58 -0500, "Yuji Sakuma"
wrote:


In the
case of trout in my home river, there was a very high mortality of the
specimens for reasons that apparently could not be identified. My suspicion
is that the fish might have been very highly stressed not by the transmitter
itself but by the procedure to install it. ....


In radio transmitter studies I've run across -
3 total - the mortality rates were relatively
low. The highest that I remember was around
18%.


Either of you guys have some sites that describe these studies?

Willi

TR Cascade River
 

Willi,

I sent you an e-mail.

Yuji Sakuma

================================================== =
"Willi" wrote in message
...

Either of you guys have some sites that describe these studies?

Willi

TR Cascade River
 

Willi,

I received your email advising that you did not receive my send. Perhaps I
was filtered out by your, or your service provider's, anti-spam program.
Anyway, here is what I wrote to you:

Best regards,

Yuji Sakuma

"Willi,


The research that I referred to was done by a grad student named Mike Zimmer
at the University of Guelph in Ontario Canada and the field work was done on
my home river, the Credit River, just outside of Toronto in 2001-2002. Our
fly fishing club, the Izaak Walton Fly Fishing Club, supported it
financially in part and he gave a slide presentation to the club last spring
on his findings. I have not followed the work closely and I don't know were
it stands now. It might have been something for a post graduate degree and
I don't know if, or when, it will be published. You might be able to get
more information from the conservation chair at the club,

http://www.iwffc.ca/index.html

or from the university, or from Mike, if he is still there,


http://www.uoguelph.ca/


Good luck,


Yuji Sakuma "

================================================== ======
"Willi" wrote in message
...

Either of you guys have some sites that describe these studies?

Willi