Re: Aquatic Plants Digest V4 #35

[Alec Dale <dale7 at uwindsor_ca>]

> Date: Sun, 16 Jan 2000 23:31:54 -0500
> From: Dinyar Lalkaka <lalkaka at bellatlantic_net>
> Subject: Re: CO2 transport in FISH, as well as us lowly humans
>
> Thank you, Alec,
>
> I could not follow _all_ of it, but that was a most informative post.
>
> Here is a lecture on fish respiration for those with a further interest in
> the subject: <http://www.csuchico.edu/~pmaslin/ichthy/fshrsp.html>.
>
> (A few quick searches on alltheweb.com found many relevant and interesting
> references.)
>
> Can you give please us a brief explanation of the Bohr Effect and
> (especially) the Root Effect, and how these relate to this thread on the
> APD?
>
> Regards,
> Dinyar
>
>

Thanks Dinyar, like I said I am no physiologist, so I am basically
relearning this stuff myself (the details anyway).  I should have noted
in my last paragraph that the decreased pH will reduce the hemoglobin's
ability to take up O2, but that's a pH effect and not due to CO2 blocking
O2 uptake.  I think Peter Aitken pointed this out in one of his posts.
The effect is shown decently on the web page you provide.  As stated
on that page, it will depend on the fish species as to how great the decrease will be.
I would imagine the decreased O2 saturation of hemoglobin at lower pH would also
result in increased respiration.  I will give it a shot but, I have a thesis I am
supposed to be writing as well so....I should probably quit procrastinating  LOL!

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