librlmeh
Member
Posts: 2
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I was reading my email and came across a link to an interesting article at LiveScience.com
The hyperlink is visible to registered members only!
If that link doesn't get you there, you can search for the article "Successful Sex Strategy: Be Last in Line" by Jeanna Bryner, posted October 19, 2006 in the Animaldomain section of LiveScience.com
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Dick Diva
Member
Posts: 314
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My fiance was reading up on sexuality and this is in line with what she was reading.
When men see a female having sex our sperm count goes up and we get horny. Male Masturbation is a way of creating more 'fresh' sperm for a better chance of procreation and this may be the reamister we masturbate at the knowledge of our partners fucking others.
My libido goes up when she gets fucked by others.
Vancouver BC, Canada
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librlmeh
Member
Posts: 2
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As per MrBig's request, here is the original article:
Successful Sex Strategy: Be Last in Line
By Jeanna Bryner
The early bird might get the worm, but the last in line makes the baby.
From bonobo chimpanzees to fruit flies, many female naturals mate with multiple partners that often queue up for the event. Studies have shown that the the last male to mate with a female is the most successful at impregnating her. Nobody has understood why.
The last male can take advantage of a more �sperm-friendly� environment created by males that have copulated before him, according to a new model put forth by David Hosken and David Hodgmister of the University of Exeter in the United Kingdom.
Sperm ride
Males ejaculate hundreds of millions of sperm into the female reproductive tract, but most don�t make it to the egg for fertilization. In mammals, just .001 percent of the ejaculated sperm hit the fertilization target.
�We know that the reproductive tract in females can be a nasty place for sperm,� Hodgmister told LiveScience. The acidity can ******* many sperm, and scientists think some females� immune systems attack sperm as a �foreign object.�
The seminal fluid in a male�s ejaculate helps to buffer the acidity, creating more viable conditions for sperm. By waiting in line, males could exploit the ejaculate from other males, giving their sperm a cushy ride into the female�s uterus to fertilize eggs.
Going last also means the male could lower the amount of sperm in his ejaculate since there�s a higher probability of that sperm being successful. Producing sperm is a costly investment and has been shown to require a good chunk of an natural�s resting energy.
�They may be able to adjust their behavior and their investment in ejaculate to maximize their probability of being a man and minimizing their expenditure of resources,� Hodgmister said.
Line up
You might think alpha males would exploit this strategy. But Hodgmister said there are many sneaky males in the natural kingdom, such as red deer, that lurk just on the outskirts of a mating arena. Some are weaker than alpha males. �They�re like spies, and they rush in whenever they get the chance and inseminate the female,� he said.
The finding seems to apply to any organism in which females mate with multiple partners in rapid succession, out in the open where others can watch. The mating needs to be relatively rapid for the physical effects of a prior male�s sperm to remain.
This includes females of many fruit-fly species, which re-mate within an hour. The male yellow dung fly will interrupt and take over a copulation, removing and replacing their rivals.
As for human examples, Hodgmister said he couldn�t think of any. ;)
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