Neck RWNautilus2010-02-152010-02-151990 Jun 2http://hdl.handle.net/1969.3/2360016-25The bivalve fauna of Lake Lewisville (Elm Fork Trinity River), Denton County, Texas, consists of 16 spp. Present are the introduced Asian clam and 15 native unionids. Relative abundances of species in different areas of the reservoir are related to inundation history and geological substrate. Inundation has locally extirpated some species while other species have flourished. Utilization of shell material for the cultured pearl industry is documented. Ecological, taxonomic, and zoogeographical notes are presented for each species.BIVALVESIMPACTLAKEriversilverTEXASTrinity RiverJournal