Journal of the Southeastern Association of Fish and Wildlife Agencies

Laboratory tests were conducted in aquaria to determine the effectiveness of Sulfoxide as a synergist to rotenone for use as a fish poison. In order to compare the synergized product with standard formulations, Pro-Noxfish (2.5 percent rotenone, 2.5 percent Sulfoxide,S percent other cube extractives, and an emulsifier) was compared to Noxfish (5.0 percent rotenone, 10 percent other cube extractives, and an emulsifier), and to powdered cube (7.3 percent rotenone). The relative toxicities of the three formulations were found to vary with water temperature, species of fish, and size of fish tested. Eight species were tested at approximately 70° F. for 72 hours. The concentrations, expressed in p.p.m.

Following the recommendations of a three-year comparative fishery study of Lakes Ouachita, Hamilton and Catherine near Hot Springs, Arkansas, a rough fish removal project was carried out on 3,OOO-acre Lake Catherine, October 25, 1958. The chemical (Pro-Noxfish) was applied at varying concentrations over approximately three-fourths of the drawn-down area of the lake. The water level was manipulated so that the treated water infiltrated the untreated portions. As a result, a selective shad and drum kill was obtained over the entire area of the lake. Bank counts failed to give an acceptable quantitative estimate of numbers and weights of fish killed. A more satisfactory estimate was obtained by the use of data obtained from previous rotenone population samples. As part of the management plan, the lake will be restocked with large numbers of yearling and fingerling game fishes. Evaluation of the management work will be carried out by continuing Dingell-Johnson Project F-5-R.

The reservoir has a surface acreage of 160,500 and contains two rather dissimilar lakes, Lake Moultrie and Lake Marion. Channel catfish (Ictalurus punctatus) are virtually unknown in Lake Marion, exist in relatively small numbers in Lake Moultrie, and are abundant in the tailrace sanctuary. White catfish (Ictalurus cattts) are present in large numbers in both lakes and the tailrace sanctuary. The channel catfish of Lake Moultrie and the tailrace sanctuary grow larger and faster, live longer and are in better condition than any channel catfish described in the literature. They, also, differ slightly in morphology.

Beginning with a stocking of 600 four- to six-inch rainbow trout in 1948 in the Norfork Dam tailwater located in North Central Arkansas, a fishery soon developed which was entirely new to the area. With the completion of Bull Shoals Dam in 1952, investigations began which soon showed that the native fishery was destroyed for many miles below the high dams. A trout stocking program carried on in conjunction with an investigational project produced such excellent trout fishing that the area became nationally famous within a few years, and a modern trout hatchery was constructed just below Norfork Dam by the U. S. Fish and Wildlife Service for the purpose of producing trout for stocking the White River and its tributaries. By 1957 trout were being stocked in 91 miles of tailwater streams which supported 47,792 man days of fishing, generating $684,732.00 worth of business to the fishing service operators alone.