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Author Topic: Where Are The Sockeye?  (Read 7352 times)

big_fish

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Re: Where Are The Sockeye?
« Reply #15 on: August 11, 2013, 09:28:20 PM »

This is probably a worthwhile read as well and probably a little more relevant as it was conducted on the Fraser. http://www.thinksalmon.com/reports/2011_Fraser_River_Sockeye_CR_Study_(Final_copy).pdf

Not sure if others have told you already, but you need to read the reports others posted first if you want to engage in the discussion.
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shuswapsteve

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Re: Where Are The Sockeye?
« Reply #16 on: August 11, 2013, 09:56:25 PM »

This is probably a worthwhile read as well and probably a little more relevant as it was conducted on the Fraser. http://www.thinksalmon.com/reports/2011_Fraser_River_Sockeye_CR_Study_(Final_copy).pdf

Well, they are both relevant really when you read both of them; however, both look at the issue a little differently.  J.O. Thomas report was primarily concerned with short-term mortality rates.  In Robinson et al 2013, they wanted to mimic a method of assisted ventilation that anglers commonly use.  It was the first assessment of the long term survival of holding a fish into the current prior to release.  Granted it was under experimental conditions, but if you compare it to the report that accompanied the J.O. Thomas report (Donaldson et al 2011; Scott Hinch's group who looked at survival over a longer term.  This includes many who were apart of Robinson et al 2013) they both indicate that either 24 hr recovery in a net pen or ventilation assistance may not promote post release survival of Fraser Sockeye.

http://faculty.forestry.ubc.ca/hinch/Donaldson_etal_2011_FR.pdf
« Last Edit: August 11, 2013, 10:06:33 PM by shuswapsteve »
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