Walt Wilczynski discusses research on the responses by non-mammals to signals during mating competitions

submitted by: nsf

Walter Wilczynski of Georgia State University is researching how non-mammals signal one another in mating competitions, and how these signals influence the behavior of individual males and females. According to Wilczynski's research, an individual's behavioral responses to such signals and whether it loses or wins a mating competition may modify its brain in ways that may influence its future behavior.

Science Nation - Evolution in Action

submitted by: nsf
Professor Lawrence Gilbert and his team at the University of Texas at Austin have discovered a population of tropical butterflies that exemplify "evolution in action," and a rare research opportunity. Gilbert says they may be witnessing a species of butterfly splitting into two different species. For more information and more ScienceNation videos, go to http://www.nsf.gov/news/special_reports/science_nation/index.jsp

Science Nation - Dragonflies in Motion

submitted by: nsf
Next time you see a dragonfly, try to watch it catch its next meal on the go. Good luck! "Unless we film it in high speed, we can't see whether it caught the prey, but when it gets back to its perch, if we see it chewing, we know that it was successful," says Stacey Combes a biomechanist at Harvard University. With support from the National Science Foundation, she and her team are using high speed cameras to help them study how dragonflies pull off complicated aerial feats that include...

Science Nation - Fluorescent Fruit Flies Shed New Light

submitted by: nsf

Researchers genetically engineer glow-in-the-dark sperm in fruit flies, revealing much more about sexual selection.
For more Science Nation, go to http://www.nsf.gov/news/special_reports/science_nation/index.jsp

Gene Pool Basics (HWE, mating and selection)

submitted by: mar450

Two Morehouse students display the basics of population dynamics, mating and selection.