Sam L. Spencer

A 230-volt, 180-cycle alternating current; a 115-volt, 60-cycle alternating current and a 115-volt direct current were used to attempt to kill intermediate-size bluegill, Lepomis macrochirus, Rafinesque, without harming largemouth bass, Micropterus salmoides (Lacepede). Bluegill and largemouth bass were placed in screen pens in concrete ponds and exposed to different voltages, electrode types and exposure periods. No largemouth bass were killed during exposure periods which killed 75 percent of the bluegill. The 230 volts killed more bluegill than 115 volts A.C. or 115 volts D.C....

The Mobile Delta was described in this study as the water area in Alabama lying between the Mobile Oauseway on the south and Highway 84 bridge on the Tombigbee River near Jackson, Alabama and Choctaw Bluff, Alabama on the Alabama River in Clark County on the north. It consisted of 31,549 acres of waster lying in a land areaapproximate1y 10 by 60 miles. The delta was divided into seven areas for the creel census. A creel census of the sport fishery was made in the area during July 1, 1963, to June 30, 1964. During this period a total of 49,922 sport fishermen fished the area and caught...

A total of 205 licensed commercial fishermen fished in 31,549 acres of water of the Mobile Delta in Alabama north of U. S. Hig-hway 90 during the period July 1, 1963 to June 30, 1964. Forty-one (20 percent) of these fishermen were selected at random and interviewed. Information concerning catch, capital investment, gross income, net income, and operating expenses was obtained. It was assumed that this sample was representative of the 205 licensed freshwater commercial fishermen who fished the sample area and the data were calcuLated on this basis. Records of sales from retail and wholesale...