Head Returns..... Where Caught/Where Were They Heading
- Thread starter Fish Assassin
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Hoochiebob
Well-Known Member
Came in at 22 pounds. Nice looking fish
Peahead
Well-Known Member
Wire tags and the insertion/extraction process costs time and money but the main reason so many coho are adipose clipped and not wire tagged ( 1 wire tag in every 10 clipped coho) is for the purpose of providing a hatchery Coho retention fishery.
As far as chinook go in BC, wire code tags are inserted in a higher percentage of hatchery Chinook than that of the hatchery coho ( I believe its around 25% or 1 in 4 ) My understanding is that Washington state adipose clips a very high percentage of their hatchery Chinook and most of that is to provide a retention fishery as well. All those hatchery clipped Chinook have a very small percentage that are also wire code tagged. For this reason when you catch a hatchery clipped Chinook that is bound for USA, there is a small chance it will have a wire coded tag ( as compared to the Canadian hatchery clipped chinook)
The point here is that adipose clipping coho and chinook is to provide for a marked retention fisheries in areas as well as to provide an indication that they may have a wire code inserted as well - two purposes essentially.
I got a recent report back from 2 hatchery Chinook heads returned that were fish caught on August 30th at Sandheads. No surprise that 1 was from the Chiliwack/vedder and a 4 year old as I recall. The other had no tag. I have more return reports that I will compile into one table when I get a chance and post it all here
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Aces
Well-Known Member
Thanks for that. A nice one but i'm surprised it wasn't a tyee at that age though.
Hoochiebob
Well-Known Member
Am looking forward to see your results peahead. I was surprised to find out that the salmon was a five year. Almost makes me think that the guy was trying to go around the long way and had another month or so to beef up
Andrew P
Well-Known Member
A bit off topic....
BC tags of Chinook caught in Alaska...If only DFO released info like this. You can download all of the data for Alaska and Washington....and then a data black hole for BC...I downloaded and made a pivot table in excel. There is a lot of data...here is one angle on it. Tag by year by release location. It doesn't say what portion of heads they check...."This report lists information about RANDOMLY SAMPLED COMMERCIAL salmon heads from which coded wire tags were successfully extracted and decoded with no ambiguity. It is primarily intended to support coho research."
http://mtalab.adfg.alaska.gov/CWT/
BC tags of Chinook caught in Alaska...If only DFO released info like this. You can download all of the data for Alaska and Washington....and then a data black hole for BC...I downloaded and made a pivot table in excel. There is a lot of data...here is one angle on it. Tag by year by release location. It doesn't say what portion of heads they check...."This report lists information about RANDOMLY SAMPLED COMMERCIAL salmon heads from which coded wire tags were successfully extracted and decoded with no ambiguity. It is primarily intended to support coho research."
http://mtalab.adfg.alaska.gov/CWT/
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Andrew P
Well-Known Member
I'm getting the hang of this pivot table and there is a bit of disturbing correlations if I am doing this right. This is sport caught tags. Many many more than the previous post of commercial random checks. Note the comparison of survival rate and Robertson Creek tagged fish caught in Alaska....
Charter Tofino
Well-Known Member
Any idea on the avg tagged vs non tagged ratio? does it vary by hatchery much? Pretty disturbing #s
Andrew P
Well-Known Member
Those numbers are tame compared to these rec numbers below....they are randomly sampled commercial heads, which I would guess is a very low sample rate, the .
Hopefully these numbers are big enough to see. I am sure when these numbers are multiplied up by the ratio of tagged vs non tagged...the alaska take has huge impact on some runs.
Alaska Rec Caught Tags
GLG
Well-Known Member
It was agreed (US & Can) that this would be where all the CWT data was to be held.
http://www.rmpc.org/
Been a few years since I sql'ed the data but maybe you could have a go.
PM sent to you...
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Andrew P
Well-Known Member
Columbian...
It turns out that this fish was from the Big Creek Hatchery in Oregon and was a 2011 brood year.
Well, after a 5am start to take some friends out for a Hali Skunking, and a quick pass at Constance on the way home, my second attempt of the day paid off. I worked for a handful of hours after the morning skunking and then took my son out metchosin thinking that the next wave is only just working around the corner from sooke. It paid off. The first hit didn't stick, but the second did and landed a nice 13.5( weight is thanks to the awesome beast of an old scale my wife got me at a garage sale; it's great) clipped chinook. Really healthy football. Son was over it after we got the fish at 6 and I was good to go.
85' on rigger in 110' water.
Great eve.
It turns out that this fish was from the Big Creek Hatchery in Oregon and was a 2011 brood year.
gearjammer
Member
Just got a reply back today on a hatchery Chinook I got off Fingers on May 22/14. It had a pin in it and was from the Chilliwack River brood year 2010. Second Chinook caught that had a pin in it, so far 0 for 12 on coho. GJ
