The rusty crayfish, Orconectes rusticus (Girard, 1852), is native to the Ohio River basin, but was introduced into northern Midwestern lakes through the bait trade about 50 years ago. Since then, the ...

Crawdad, crawfish, crayfish. No matter what you call the crustaceans, the rusty crayfish, an interloper from the Ohio River watershed, has become one of the most destructive invasive species in the ...

Hybrid zones that result in the genetic assimilation (replacement) of one species by another are underrepresented in the animal literature, most likely due to their transient nature. One such zone ...

The Colorado Division of Wildlife is urging extra caution from all those fond of a good old-fashioned crayfish boil, after discovering a particularly aggressive variety of the small crustacean in ...

URBANA, Ill. – Every plant and animal has a unique genetic composition, which makes a lake like a bowl of DNA soup-every spoonful contains the combined DNA of the lake’s inhabitants. Scientists have ...

Every plant and animal has a unique genetic composition, which makes a lake like a bowl of DNA soup—every spoonful contains the combined DNA of the lake’s inhabitants. Scientists have only recently ...