Here's articles on Birth Control and mate selection for men and women:
The truth about relationships and the birth control pill - 9/29/08 - San Francisco News - abc7news.com
"It all starts with the Swiss Scientist Claus Wedekind at the University of Bern asking women to smell a bunch of sweaty t-shirts. He asked women to smell t-shirts worn by unwashed and unknown men and then to rate which shirts they found most appealing. Weird, right? Subconsciously, it turns out most women gravitate toward the smell of men who have the polar opposite immune system, and thereby opposite smell of their father's and brother's. But&here's the Pill connection. Women who were on the pill were most attracted to men who smelled like their father or brother.
"In 2006, researchers at the University of New Mexico studied 48 couples' patterns in the bedroom. Conclusions reported that women with dissimilar MHC genes to their partner tended to be more satisfied, responsive and adventurous in the sexual arena. In fact, during ovulation they experienced more orgasms. Women with MHC similar mates, reported more fantasies about other men, especially during their ovulation. They also reported more infidelities."
Popular Science Blog - New Study: Fertile Strippers Make More Money
New Study: Fertile Strippers Make More Money
"Psychologist Geoffrey Miller and colleagues tapped the talent at local gentlemen's clubs and counted tips made on lap dances. Dancers made about $70 an hour during their peak period of fertility, versus about $35 while menstruating and $50 in between."
"Women on the pill averaged $37 (and had no performance peak) versus $53 for women off-pill. The contraceptive produces hormonal cues indicating early pregnancy, not an enticing target for a would-be suitor. Birth control could lead to many thousands of dollars lost every year."