Re: NANFA-L-- Sculpin temperature tolerance

Todd D. Crail (tcrail at UTNet.UToledo.Edu)
Thu, 15 Sep 2005 16:43:59 -0400

----- Original Message -----
From: <ichthos at>
> I read in a scientific paper somewhere that the reason sculpins die at
higher temperatures is not because there is less oxygen in the water. It's
because a vital oxygen-metabolizing enzyme or protein in their hemoglobin
begins to break down when the water heats up.

That makes a lot of sense. I wonder how the distribution of the enzyme
across the range varies? I would guess these would be an example of an
allozyme (genetic difference) vs an isozyme (biochemical difference)?
Hmmm... How would that one work? Would the southern genotype Chris brough
back have a more robust genetic package that would allow for more isozymes,
or would they just have something different all together?

The Madness (tm)
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