B. R. Murphy

Genetically-marked strains of walleye (Stizostedion vitreum vitreuni) from Arkansas (ARS) and Iowa (IAS) were stocked simultaneously into a Texas reservoir in 1985 to evaluate strain-related performance differences associated with spawning and growth. Post-stocking collections made during the spring spawning season (1988-1990) resulted in the capture of 132 walleyes from this year class. ARS walleyes comprised 35% of 1985 year-class samples which was significantly higher than the stocking proportion (26%). Differences were attributed to ARS females being more abundant than IAS females in...

Food habits, prey-size, and the occurrence of food in the stomachs were examined at various water temperatures among 1,152 Florida largemouth bass (Micropterus salmoidesfloridanus), northern largemouth bass (M. s. salmoides), and intergrade hybrids between the 2 subspecies in Aquilla Lake, Texas. Dietary composition, prey-size consumed, and the frequency of food items in the stomach were similar among the largemouth bass subspecies and their intergrade hybrid at temperatures between 80 and 31 0 C. A higher proportion of insects occurred in the diet of smaller (151-253 mm TL) largemouth...