Guppies, a perennial pet store favorite, have helped a UC Riverside scientist unlock a key question about evolution: Do animals evolve in response to the risk of being eaten, or to the environment that they create in the absence of predators? Turns out, it’s the latter. Guppies swim near the...

Evolution is actually a Sadie Hawkins dance, as new research shows females not only determine whether male animals develop bright colors, but also how fast new species develop. Research led by David Reznick, a UC Riverside biology professor, used fish often seen in pet stores, like guppies and swordtails, to...

Bipedalism may have been favored in kangaroo rats to avoid ambush predators like vipers and owls, says UC Riverside biologist

UC Riverside research focused on interaction between nitrogen-fixing bacteria and their hosts