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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Spider Foreplay
28 October 2011 11:53 am
Call it the insect version of foreplay. Like humans, tangle-web spiders (Anelosimus studiosus) engage in playful sexual behaviors that include courting and mock copulation, usually before the females are mature enough to mate. Researchers have found that the activity keeps females happy; they're more likely to mate and less likely to attack males when they're finally ready for sex. But foreplay may come with a cost for males. As the team reports online this month in Ethology, males that invest a lot of effort in fooling around with females may end up exhausted and thus less competitive when they need to fight rivals for a mate. So, at least for male spiders, foreplay doesn't always pay off.
See more ScienceShots.