Researchers have discovered that injecting a simple hormone into leeches creates a novel way to study how hormones and the nervous system work together to produce species-specific reproductive ...

Biologists tend to look at the animal kingdom and try to categorize things in an organized fashion. But nature has a way of ...

A common growth-promoting hormone used worldwide in the cattle industry has been found to affect the sexual behaviors of fish at a very low concentration in waterways – with potentially serious ...

Field and laboratory observations were made on the reproductive behavior, ecology and sounds produced by males of Notropis analostanus during reproductive behavior. Based on these observations, ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...