Freshwater mussels (Family Unionidae) represent an important yet poorly-known group of mollusks. These animals were used for food by Native Americans, harvested by early Spanish explorers for gem-quality pearls, and some species currently serve as a source of implant material for the cultured pearl industry. Recent recognition of their importance in aquatic ecosystems as barometers of environmental quality has been associated with dramatic decline and extinction of many species. Freshwater mussels are the most rapidly declining group of animals in North America.This guide represents a first-ofits-kind reference to assist both biologists and naturalists in the identification and study of freshwater mussels. Freshwater Mussels of Texas contains 224 pages with 226 black and white photographs, 144 color photographs and 79 line drawings covering all 52 species found in Texas waters. Introductory sections cover basic anatomy, reproduction, habitat, feeding, behavior, ecology, exploitation and biogeography. Individual species accounts address common names, classification, distribution, description, habitat, spawning, glochidia, hosts and economic importance. Other bivalve mollusks which may be found in the fresh waters of Texas are also discussed. Read More