Personality determines whether tarantulas copulate with males or cannibalize them
Sexual cannibalism in spiders – the attack and consumption of males by females before or after copulation – is very widespread. A new investigation analyses the reason behind such extreme behaviour, at ...
In sex-reversed cave insects, females have the penises
Researchers reporting in the Cell Press journal Current Biology on April 17 have discovered little-known cave insects with rather novel sex lives. The Brazilian insects, which represent four distinct but re ...
Study brings greater clarity to sex roles
Glossy magazines and TV reality shows often portray males as the gender that strays and females as the gender that's picky.
Male extinction prevented by promiscuous females
Female fruit flies with a large number of sexual partners are playing an invaluable role in preventing the extinction of males, research at the University of Liverpool has shown.
Male St. Andrew's Cross spiders sniff web pheromones to determine suitability of female mates
Picky male black widow spiders prefer well-fed virgins
New University of Toronto Scarborough research shows that male black widow spiders prefer their female mates to be well-fed virgins – a rare example of mate preference by male spiders.
Tiny male spiders can get a leg over—as long as they're picky
Males will mate with anything. Well, that is the general view, one that exists because of a simple biological underpinning: females are reproductively limited by costly gestation, while males are only limited ...
Male-dominated societies are not more violent, study says
Conventional wisdom and scientific arguments have claimed that societies with more men than women, such as China, will become more violent, but a University of California, Davis, study has found that a male-biased sex ratio ...
All eyes on Britain's panda pair as mating season approaches
Experts at Edinburgh Zoo in Scotland have begun daily check-ups of Britain's only female giant panda Tian Tian and male partner, Yang Guang, the zoo announced on Monday.
Hormone levels linked to survival of deer calves, study suggests
Levels of a key hormone in the blood may be important for the survival prospects of newborn animals, a study of wild deer suggests.
Study finds law dramatically curbing need for speed
Almost seven years have passed since Ontario's street-racing legislation hit the books and, according to one Western researcher, it has succeeded in putting the brakes on the number of convictions and, more importantly, injuries ...
New policy report outlines ways to help men of color succeed in community colleges
On the heels of the Obama administration's announcement of a $200 million initiative to help young men of color overcome barriers in society, two San Diego State University professors are shifting the conversation ...
More male fish "feminized" by pollution on the Basque coast
The UPV/EHU's Cell Biology in Environmental Toxicology group has conducted research using thick-lipped grey mullet and has analysed specimens in six zones: Arriluze and Gernika in 2007 and 2008, and since then, Santurtzi, ...