- 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: The Deadly Allure of the Exotic
26 November 2013 7:15 pm
Males of a praying mantis native to New Zealand, Orthodera novaezealandiae, are more attracted to the cannibalistic females of an invasive species introduced in the 1970s, Miomantis caffra, than they are to the noncannibal females of their own kind, a new study suggests. In lab tests, a native male (smaller mantis in image) was placed in a Y-shaped maze whose branches contained a female of one species or the other. At the fork in the road, the male turned toward the invasive female in 11 out of 13 trials, researchers report online today in Biology Letters. Female mantises attract mates using odorous chemicals called pheromones, and the invaders’ pheromones may be more alluring or more abundantly released than the natives', the scientists speculate. In other tests in which researchers left an M. caffra female with a native male for 16 hours, the males were killed and eaten almost 69% of the time. The oft-fatal attraction may explain why the native species is apparently in decline where the species coexist, the researchers say.