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Re: a dumb question regarding pterosaur biochemistry

I don't know the answer to your question, but I would bet that some clues
could be found in the nitrogen isotope ratios and carbon isotope ratios
found in pterosaur bones.

"My wife likes to talk during sex.  She used to call me from motel
rooms." - Rodney Dangerfield (1921-2004)

On Sat, 09 Oct 2004 11:24:04 -0700 "James R. Cunningham"
<jrccea@bellsouth.net> writes:
> A question for anyone who may be interested:
> A friend has recently informed me that fish-eating pterosaurs start 
> out
> preferentially burning carbohydrates and sugars for energy just like 
> we
> humans do, and don't burn fats, oils, and protein till much later in 
> a
> flight.  That raised a couple of questions in my mind.  Since fish
> contain essentially no carbohydrates (except for those that might 
> be
> found in their gut), since fish typically have very low glucose and
> glycogen levels, and since pterosaur livers don't seem to be large
> enough to rapidly process large quantites of glycogen from protein
> anyway -- where do these preferentially burned carbohydrates and 
> sugars
> come from?
> Thanks,
> JimC

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