Re: Onset of Puberty Determined by Evolution
- From: Josh Hayes <joshno@xxxxxxxxxxxxx>
- Date: Thu, 01 Dec 2005 07:11:42 -0000
"APOCALYPSE" <reignorshyne@xxxxxxxxxxx> wrote in
news:1133410475.475741.177960@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:
> I read somewhere that female puberty is related to viability for
> pregnancy.
>
> A girl who comes of age too thin will have a body without enough fatty
> insulation and protection for a growing baby. Consequently, girls who
> grow up thin will have delayed onset of their first period because the
> body won't have the necessary mass to produce the hormone that triggers
> the hormone that triggers the hormone for having a period.
At the same time, if life expectancy is low, then even poor probability of
success NOW beats zero probability of surviving to an age with a better
probability of successful reproduction.
See "reproductive value"; a nice page with pretty pictures and a clear
explanation is available here:
http://uts.cc.utexas.edu/~varanus/demography.html
Disclosure: Eric was my major prof for a time until we had a falling out
about why his stomach-contents analysis work was hopelessly flawed (I can't
understand why he took that personally! :-), but he's still an extremely
bright guy.
-JAH
.
- References:
- Onset of Puberty Determined by Evolution
- From: Jerry Sparks
- Re: Onset of Puberty Determined by Evolution
- From: Paul J Gans
- Re: Onset of Puberty Determined by Evolution
- From: APOCALYPSE
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