from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any member of the Unionidae.
from The Century Dictionary and Cyclopedia
- n. A unio; any member of the Unionidæ.
Sorry, no etymologies found.
The native freshwater bivalves of Illinois represent three families, of which the great majority belong to the Unionidae -- hence the term "unionid," which is often used when speaking about native mussels in general.
The other bivalve species I noticed, which was much less abundant than Corbicula, was the following native unionid.
D. polymorpha impairs unionid metabolic activity and locomotion resulting in depleted energy and effectively starve them to death.
Gerald Lang Carnegie Museum of Natural History: Color variations of unionid shells and possible evidence for beaver predation on freshwater mussels.
Jerry Lang CMNH; Butler County Community College: Surveys of the unionid mussels, the populations of which have been going down.
Daniel Graf discussed the unionid freshwater mussels of the Congo region in Africa.