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Cost of coitus: Male monkeys pay for sex

AFP: Selling sex is said to be humankind's oldest profession but it may have deep evolutionary roots, according to a study into our primate cousins which found that male macaques pay for intercourse by using grooming as a currency.

Michael Gumert of Nanyang Technological University in Singapore made the discovery in a 20-month investigation into 50 long-tailed macaques in Kalimantan Tengah, Indonesia, New Scientist reports on Saturday.

On average, females had sex 1.5 times per hour.

But this rate jumped to 3.5 times per hour immediately after the female had been groomed by a male -- and her partner of choice was likely to be the hunky monkey that did the grooming.

Market forces also acted on the value of the transaction.

If there were several females in the area, the cost of buying sex would drop dramatically -- a male could "buy" a female for just eight minutes of nit-picking.

But if there were no females around, he would have to groom for up to 16 minutes before sex was offered.

The work supports the theory that biological market forces can explain social behaviour, the British weekly says.

"There is a very well-known mix of economic and mating markets in the human species itself," said Ronald Noe of France's University of Strasbourg.

"There are many examples of rich old men getting young attractive ladies."


No!

_________________
"Your love gives me such a thrill
but your love don't pay my bills,
I NEED THE MONEY!" - John Lee Hooker

Disclaimer: The above is merely the opinion of the author unless specific scientific data is included.
Your mileage may vary. https://costaricaticas.com/phpBB2/viewto ... 978#206978

Here is a more in depth article of the same topic

Study: Monkeys 'pay' for sex by grooming
In the primate world, sex is subject to the law of supply and demand
Image: Japanese Macaque monkeys
Shuji Kajiyama / AP
Japanese Macaque monkeys groom each other, sitting in a hot spring in the snow at Jigokudani Wild Monkey Park in Yamanouchi, Nagano prefecture, central Japan. Male macaque monkeys pay for sex by grooming females, according to a recent study that suggests the primates may treat sex as a commodity.
View related photos


Most viewed on MSNBC.com
By Gillian Wong
updated 1:03 p.m. ET Jan. 5, 2008

SINGAPORE - Male macaque monkeys pay for sex by grooming females, according to a recent study that suggests the primates may treat sex as a commodity.

"In primate societies, grooming is the underlying fabric of it all," Dr. Michael Gumert, a primatologist at the Nanyang Technological University in Singapore, said in a telephone interview Saturday.

"It's a sign of friendship and family, and it's also something that can be exchanged for sexual services," Gumert said.
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Gumert's findings, reported in New Scientist last week, resulted from a 20-month observation of about 50 long-tailed macaques in a reserve in Central Kalimantan, Indonesia.

Gumert found after a male grooms a female, the likelihood that she will engage in sexual activity with the male was about three times more than if the grooming had not occurred.

And as with other commodities, the value of sex is affected by supply and demand factors: A male would spend more time grooming a female if there were fewer females in the vicinity.

"And when the female supply is higher, the male spends less time on grooming ... The mating actually becomes cheaper depending on the market," Gumert said.

Other experts not involved in the study welcomed Gumert's research, saying it was a major effort in systematically studying the interaction of organisms in ways in which an exchange of commodities or services can be observed — a theory known as biological markets.

Dr. Peter Hammerstein, a professor at the Institute for Theoretical Biology at Humboldt University in Berlin and Dr. Ronald Noe, a primatologist at the University of Louis-Pasteur in Strasbourg, France, first proposed the concept of biological markets in 1994.

"It is not a rare phenomenon in nature that males have to make some 'mating effort' in order to get a female's 'permission' to mate," Hammerstein said in an interview, likening the effort to a "fee" that the male pays.

"The interesting result of Dr. Gumert's research on macaque mating is that the mating market seems to have an influence on the amount of this fee," Hammerstein said.

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Hammserstein said Gumert's findings indicate the monkeys are capable of adjusting their behavior to "different market conditions."

Gumert completed his fieldwork in February 2005 and first published his findings in the November issue of "Animal Behaviour," a scientific monthly journal.
© 2008 The Associated P

wow 3.5 per hour those monkeys put the DR C chicas in their place those monkeys would clean up there. They could offer 30 an hour and still clean up the place.