Navigation Links
Research Suggests Mens Sexual Behavior Adapts to Perceived Threats

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.


'"/>




Page: 1

Related medicine news :

1. Kidney Stones - Interesting New Research implicates bacteria as its cause
2. Researchers urge caution in using ear tube surgery
3. Paracetamol May Cause Live Damage Warns Consumer Education and Research Centre
4. Researchers Scale to assess the Severity of Epilepsy in Kids
5. Research of Ritalin
6. Researchers trick Alzheimers Enzyme
7. Researchers find new HIV hiding place
8. A Compilation of recent Diabetes Research articles
9. Research on causes for falling helps develop preventive strategies
10. New standards for Human Research Safety
11. Research on Celiac Disease in children
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... , ... The American Board of Family Medicine's (ABFM) Board of Directors has ... succeeding Dr. James C. Puffer upon his retirement. Dr. Newton will serve in the ... at the end of 2018. Upon assuming the role of President and CEO on ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... ‘17, and Jennifer Huggins, PharmD ’17, along with clinical associate professor Janice ... of cardiovascular diseases during the 15th Annual Women’s Health Conference. The SIU ...
(Date:10/13/2017)... ... October 13, 2017 , ... Many families have long-term insurance ... care insurance companies have a waiver for care if the client has a cognitive ... the family pays for care, is often waived, so the benefits from their insurance ...
(Date:10/13/2017)... ... ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out many kids ... sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting kids excited ... all ages; it is a non-competitive, non-timed event, which is all about having fun ...
(Date:10/13/2017)... Fairfax, VA (PRWEB) , ... October 13, 2017 ... ... provider of DevOps and Agile Software Development, has been awarded a contract by ... (EATS) Blanket Purchase Agreement (BPA) aims to accelerate the enterprise use of Agile ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... Labs announces the European launch of their new low volume, high ... in Cambridge, U.K on October 4th. The ... with unprecedented speed and sensitivity while using far less sample volume ... ... ...
(Date:9/28/2017)... 28, 2017 Hill-Rom Holdings, Inc. (NYSE: HRC), ... call and webcast on Friday, November 3, 2017, beginning ... ending at approximately 8:30 a.m. (CDT) / 9:30 a.m. ... 2017 financial performance and guidance for 2018, Hill-Rom executives ... enhance operational performance, and long-range financial outlook through 2020. ...
(Date:9/27/2017)... , Sept. 27, 2017  Commended for their devotion ... notable awards. Ranked as number one in the South Florida ... time in Inc. 5000 yearly list, the national specialty pharmacy ... Armando Bardisa will soon be honored by SFBJ ... Set to receive his award in ...
Breaking Medicine Technology: