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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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: Sea Slug Sports Detachable Penis
12 February 2013 7:15 pm
The colorful sea slug known as Chromodoris reticulata (center image) boasts the ultimate throwaway culture. Researchers report online today in Biology Letters that the animal, found in the Pacific and Indian oceans, sloughs off its penis after sex (left)—then grows a new one. Scuba-diving researchers collected slugs from a coral reef off the coast of Okinawa, Japan, then watched as the animals mated in a tank (right). The animals shed their outer male organs 15 to 30 minutes after mating, but they were equipped for love again after roughly 24 hours. This is the first known case of copulation with what the researchers call a "disposable" penis. Dissection revealed a coiled and compressed stretch of reproductive tissue inside the slug's body. The researchers think this tissue elongates into a new penis, allowing a superstud slug to have as many as three hookups in 3 days. Good news for the slugs, and for those of us who remember the 90s.
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