HOME >> BIOLOGY >> NEWS
Research suggests men's sexual behavior adapts to perceived threats

Davie, Fla. May 08, 2007 -- A review of the latest research in sexual adaptation shows that evidence is building for what researchers call "sperm competition." According to a review appearing in Current Directions in Psychological Science, physical and behavioral sexual characteristics exhibited by human males indicate that males have evolved to deliver their sperm more effectively to females with multiple partners.

"Although many people are familiar with the idea of animals competing for mates before sex occurs, through mating displays such as bright feathers or butting antlers, we are finding more evidence that there is also competition after mating occurs," says author Todd K. Shackelford. "An alternative way of thinking about it is that there is not only competition between males for mates, but competition between males for fertilization."

The research presented in the review covers physical adaptations, including penis shape and style of intercourse, as well as behavior in response to perceived infidelity that all serve to increase the success of fertilization. "The studies have shown that when partners are separated for periods of time, males are more likely to arouse easily, produce more sperm, and even rape their partners," says Shackelford. According to Shackelford and co-author Aaron T. Goetz, this does not mean that women are promiscuous by nature, but it is evidence that humans are not naturally a monogamous species.

Shackelford is quick to point out, however, that females are not passive partners in the sexual relationship. "Although this review focused on male adaptations, sexual conflict between males and females produces a co-evolutionary arms race between the sexes, in which an advantage gained by one sex selects for counter-adaptations in the other sex."


'"/>

Contact: Sean Wagner
swagner@bos.blackwellpublishing.com
781-388-8550
Blackwell Publishing Ltd.
8-May-2007


Page: 1

Related biology news :

1. Gilbert Foundation and American Fed for Aging Research award grants on Alzheimers disease
2. Research shows skeleton to be endocrine organ
3. Research aims to identify markers for menopausal women at risk for deadly blood clot
4. Research team enlightens the reasons for severe blindness
5. Research teams uncover risk genes for multiple sclerosis
6. Research shows NPD1 protects a key component of vision
7. Researchers find pathway that controls cell size and division
8. Researchers watch antibiotics, bacteria meet at atomic level
9. Researchers discover gene responsible for Restless Legs Syndrome
10. Research study describes the role part of the brain plays in memory
11. NY Stem Cell Foundations 2nd Annual Translational Stem Cell Research Conference

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/12/2019)... ... 12, 2019 , ... Ava, a 115-pound Newfoundland, found herself in a predicament ... cruciate ligaments. Just one year later, she suffered the same injury in the ... surgical intervention and resumed her normal activities without any noticeable pain. Then, another ...
(Date:2/6/2019)... ... February 05, 2019 , ... Amino Labs, a ... with MindFuel, a leading organization in educational science, technology, engineering and math (STEM) ... has pioneered a syn-bio starter kit for teachers – the Amino Labs ...
(Date:1/30/2019)... ... January 30, 2019 , ... ... counsels, and supports high-growth, high-impact life science and biotechnology companies, announced today ... nonprofit disease foundations and disease-focused venture funds to discuss their investment philosophies, ...
Breaking Biology News(10 mins):
(Date:2/12/2019)... ... February 12, 2019 , ... ... has finalized a deal to extend their use of Medrio, the leading provider ... 2023. The CRO has been a regular Medrio customer for over nine years, ...
(Date:2/2/2019)... France (PRWEB) , ... February 01, 2019 , ... ... is pleased to announce the appointment of its new CEO, Julien Dert, being ... 25 years of international experience in finance and management, in which more than ...
(Date:1/30/2019)... ... January 29, 2019 , ... K&R Negotiations announced today ... at a special online event titled: Six Ways to Shorten the Sales Cycle ... February 13, 2019 on the BrightTALK network. , Negotiation expert Kresic will discuss ...
(Date:1/28/2019)... SAN DIEGO (PRWEB) , ... January 28, 2019 ... ... proteins against libraries of low molecular weight compounds. In this early stage, false ... binding. At the same time, it is vital that screening techniques are highly ...
Breaking Biology Technology:
Cached News: