The nearly neutral theory of molecular evolution posits variation among species in the effectiveness of selection. In an idealized model, the census population size determines both this minimum ...

Building these strong yet ephemeral traps is a process that follows patterns shared among spider species. But is there room for individual variation that makes one species' web — or one individual ...

A type of zooplankton, Daphnia pulex (a.k.a. the water flea) is a microscopic crustacean whose unique reproduction habits ...

Even for serious bird-watchers, Black-capped Chickadees and Carolina Chickadees are tough to tell apart. Both are members of ...

STARKVILLE, Miss.—A Mississippi State University researcher is studying a distinct population of coyotes along the Gulf Coast ...

Find out the different ways scientists have of describing what species are, how they form and how many there are on Earth.

Off the coast of South Africa, a “pygmy” sea creature latched onto the coral reef with its tail. Its “cryptic nature” and ...

Methods: We used Kruskal–Wallis tests and Permutational Multivariate Analysis of Variance (PERMANOVA) to clarify differences in skin fungal community structure among bat species. A Generalized Linear ...

A new study reveals the surprisingly convergent evolution in the inner ear of mammals. An international research team led by ...