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Re: Endothermic Crocs in Nature
I've always thought of the term "metabolic rate" being
mass-specific. However, Webster's defines it as simply
the amoun tof energy expended in an hour.
--- Tim Williams <firstname.lastname@example.org> wrote:
> Jura <email@example.com> wrote:
> >The results of automatic
> >endothermy are NOT a high activity level and
> >endurance, both of these have been shown to be
> >independent of automatic endothermy (see mako
> >tuna, bees, ants, and near any autarchoglossan
> >for examples).
> Lamnid sharks (makos, great white shark, porbeagles)
> have a system known as
> "regional endothermy". Here's a summary:
> >Larger animals do not have higher metabolic rates
> >smaller animals. They have LOWER metabolic rates.
> >elephant might eat a lot of food per day, but
> >to body size, it is but a tiny fraction of the food
> >consumed by a gerbil everyday. It's amazing how
> >energy can be saved when one isn't just burning up
> >everything to keep warm.
> I have to agree with you here. The high surface
> area to volume ratios of
> small mammals (and birds) means they have to eat
> much more per unit body
> weight than a larger-bodied terrestrial endotherm.
> In general, anyway.