IV-D-25 



Stevens, D.E., L.W. Miller, and J.L. Turner. 1972. Other fishes in the 

 estuary. Pages 52-59 i_n J. E. Skinner (compiler). Ecological studies 

 of the Sacramento-San Joaquin estuary. California Department of Fish 

 and Game, Delta Fish and Wildlife Protection Study Report No. 8. 



This section discusses American shad, white sturgeon and the principal 

 resident freshwater fishes of the Delta, which include white catfish, 

 brown bullheads, black crappies, bluegill, largemouth bass, and thread- 

 fin shad. These are all important to commercial or sport fishermen. 

 The estuary is important to both the anadromous and resident species 

 as a spawning ground. 



Young shad feed on zooplankton and adult shad feed primarily on 

 Neomysis . Benthic organisms are important in the diet of sturgeon, 

 Corophium , Neomysis , and tendipedids were the most frequent food 

 items for all sizes of catfish. Neomysis and Corophium were also 

 the most common food items found in all sizes of black crappie. 

 Phytoplankton and zooplankton were the major food items of threadfin 

 shad. (B.W.) 



Keywords: estuaries, fishes, food ecology, California 



E. Species Studies 



IV-E-1 



St. Amant, L.A. 1973. Shellfish and crustacean productivity in marshes and 

 estuaries. Pages 151-161 i£ R.H. Chabreck, ed.. Proceedings of the coastal 

 marsh and estuary management symposium. Louisiana State University, 

 Baton Rouge. 



An evaluation of shellfish and crustacean productivity is particularly 

 important when considering coastal marshes and estuaries, since these 

 species are especially estuarine-dependent and represent a level of 

 the productive cycle of estuaries where the harvest of edible protein 

 occurs and economic returns can be measured. Of further significance 

 is the fact that the areas under consideration, the coastal regions 

 from Chesapeake Bay to the Rio Grande River, include approximately 

 60 percent of the total estuarine habitat of the coastal states, includ- 

 ing Alaska, and produce 78 percent of the total annual United States 

 production of estuarine-dependent shellfish and Crustacea, valued at 

 more than $229 million. The paper presented is an attempt to examine 

 this estuarine area and its shellfish and crustacean production in some 

 detail for the period 1965 to 1970. 



177 



