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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: Dad's Odor Splits a Species
25 January 2011 7:01 pm
Some girls want a guy who looks like dear old dad. Stickleback fish want one who smells like him. Researchers have found that in two species of the fish from British Columbia's Paxton Lake, daughters learn who to choose as a mate based on their father's smell, a form of sexual imprinting. One type of stickleback lives in deep water; the other, in waters close to shore. Females of both types lay their eggs in an algae nest the male builds. He then cares for the eggs and fry, as this deep-water form of stickleback is doing above. In laboratory tests, daughters chose mates that smelled like their fathers, researchers report online today in the Proceedings of the Royal Society, B. That keeps the two species apart sexually, helping to reinforce their ecological separation. It's some of the first evidence, the authors say, that sexual imprinting can drive speciation.
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