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Re: A delicate matter...

On Sat, 10 Feb 1996 JohnE37179@aol.com wrote:

> I understand that, but not in land mammals. I doubt that it is absolute body
> temperature, but rather the variation over a day, a week or a season... Just
> a thought.

Maybe someone out there could help me out on this one, but the 
explanation I always heard about external testes in male mammals was that 
spermatogenesis works best when it takes place at a few degrees lower 
than the animal's internal temperature.  In fact, spermatogenesis 
apparently declines (whether in quality or quantity) when a male mammal 
has a fever, although I'm not certain whether that is directly related to 
the temperature or to some other factor of the disease.

Nick Pharris
Pacific Lutheran University
Tacoma, WA 98447

"If you can't convince them, confuse them." -- Harry S Truman