- News Home
17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
- About Us
ScienceShot: Drab Guppies Find a Way to Score
12 February 2013 7:01 pm
Drab male guppies have hit upon a mating strategy that could be easily adapted to the bar scene: Home in on the female besieged by ugly males. In lab-raised descendents of wild guppies (Poecilia reticulata) females prefer mates with large orange body spots (image). But a new study suggests that less-colorful male guppies (inset) aren't totally at the mercy of picky females. In lab tests where researchers placed a female guppy and two colorful males in compartments at one end of an aquarium and a female and two lackluster males at the other end, a male released in the center of the tank more often gravitated toward the end with the less colorful competitors, especially if the test male had less than 9% of its body covered by orange spots and had a history of rejection by females, the researchers report online today in the Proceedings of the Royal Society B. A previous lack of success in mating presumably makes a male recognize his own plainness, which in turn leads him to choose courtship situations where his chances of success will be greater, the researchers suggest. The tactic also explains why drab males persist in guppy populations: By choosing to woo females surrounded by unexciting suitors, even a homely guppy scores every once in a while.
See more ScienceShots.