Journal of the Southeastern Association of Fish and Wildlife Agencies

Since the turn of the century the need for a simplified method of capturing wild animals has been recognized. Although various trapping procedures have been successfully employed under a variety of conditions, the potentialities of a drugged dart have warranted considerable speculation. During the past decade extensive investigation has been directed toward perfecting a technique which would immobilize a deer until the proper measures of restraint could be inaugurated. For the acquisition of this aim, two major factors had to be considered. First, an efficient means of inducing a drug into the systemic circulation of an animal was necessary. The instrument for delivery had to be accurate within a reasonable range, and at the same time inflict a minimum of mechanical damage. Secondly, the selection of a drug was of paramount importance. The ideal drug had to possess the following characteristics: 1.

Preliminary studies were conducted on the exotic cichlid, Tilapia mossambica Peters to determine the possibilities of incorporating this fish into the farm ponds and lakes in the Southeast. In an 18-week experiment in concrete ponds, T. mossambica proved to be a more efficient fish than the bluegill, Lepomis macrochirus Raf. In feeding experiments T. mossambica gave 2.97 times greater growth than did the bluegill, in fertilization 1.69 times, and in manuring experiments 1.97 times greater growth than the bluegill. Food habit studies conducted revealed that planktonic forms of plants and animals made up the bulk of the diet under natural conditions. The minimum temperatures tolerated by T. mossambica were determined in a thermostatically controlled cold room. This fish ceased feeding at approximately 600 F., and deaths began at 52 to 5S 0 F. with 100 per cent mortality occurring at 47 to 490 F.

The propagation of most game fish and the methods used in producing them have been more or less established; and with the exception of small details are relatively the same throughout most of the South. The propagation of Channel Catfish (lctalurus lacustris) has from all appearances been more difficult, because of the wide range of methods used and the wide range in cost of production. The demand for Channel Catfish in the state of Arkansas was increasing steadily, and upon my return from the armed services, Mr. Joe Hogan of Lonoke, Ark., encouraged me to try setting up a method of production that would coincide with our hatchery work and at a minimum cost.