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Re: The Right-to-Left Shunt of Crocodilians Serves Digestion (body fat)
This made me wonder about body fat:
With the exception of preflight juveniles (which often outweigh their
parents) and premigratory birds, most species don't put on weight. This is
true even in areas where a lot of climatic stress can be anticipated.
Presumably, this has to do with population specific highly optimisation of
weights for flight efficiency, predator evasion etc.
I don't have many lizards in my ecozone but I get the impression that they
tend to grow larger instead of putting on large amounts of body fat (as many
Were there similar pressures controling optimum weight among Dinosaurs? With
the exception of large whithers is there any way to infer the amount of body
fat that would have been carried by an animal? Is this really a relevant
question given the fairly short adult lifespans infered for many species?
----- Original Message -----
From: "Hope, Sylvia" <email@example.com>
To: "DML" <firstname.lastname@example.org>
Sent: Friday, February 08, 2008 8:53 PM
Subject: RE: The Right-to-Left Shunt of Crocodilians Serves Digestion
Birds lost it right about the time the first bird got up and tried to fly
on a full stomach.
Birds have lost the shunt capability present in crocodiles and reptiles