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AW: New Papers Are All Right




--- Harris, Jerald <jharris@dixie.edu> schrieb am Sa, 24.7.2010:

> Von: Harris, Jerald <jharris@dixie.edu>
> Betreff: New Papers Are All Right
> An: "dinosaur@usc.edu" <dinosaur@usc.edu>
> Datum: Samstag, 24. Juli, 2010 19:44 Uhr

> Eme, J., Gwalthney, J., Owerkowicz, T., Blank, J.M., and
> Hicks, J.W. 2010. Turning crocodilian hearts into bird
> hearts: growth rates are similar for alligators with and
> without right-to-left cardiac shunt. Journal of Experimental
> Biology 213(15):2673-2680. doi: 10.1242/jeb.042051.
> 
> ABSTRACT: The functional and possible adaptive significance
> of non-avian reptiles' dual aortic arch system and the
> ability of all non-avian reptiles to perform central
> vascular cardiac shunts have been of great interest to
> comparative physiologists. The unique cardiac anatomy of
> crocodilians â a four-chambered heart with the dual aortic
> arch system â allows for only right-to-left (RâL;
> pulmonary bypass) cardiac shunt and for surgical elimination
> of this shunt.

I remember reading a sci-fi story once where that was tried... crocs turned 
into dragons and laid waste to civilization. The present result is very much 
more to my satisfaction ;-)


Regards,

Eike