Janice S. Hughes

The management objective at Caney Creek Reservoir, a Louisiana lake impounded in 1986, was to produce trophy-size largemouth bass (Micropterus salmoides). Management actions included introduction of Florida bass (M s. floridanus), supplemental forage stocking, and initiation of length limit regulations. Prior to impoundment, the reservoir basin contained northern largemouth bass (M. s. salmoides) and intergrades between the northern and Florida subspecies. Eight years after the initial stocking of Florida bass in 1986, 49% of the population were northern bass, 23% were Florida bass, and 28...

Bioassays were conducted on nine chemicals using one week old larvae and one month old fingerling striped bass, Marone saxatilis (Walbaum), as the test species. The chemicals tested were potassium permanganate, potassium dichromate, copper sulfate, Dylox, ethyl and methyl parathion, Karmex, butyl ester of 2, 4-D and HTH. Tests were conducted at 70° Fahrenheit in glass containers using reconstituted water as the diluent. The fingerlings were much more tolerant to Karmex, potassium dichromate, potassium permanganate and butyl ester of 2, 4-D than were the larvae. A higher concentration of...

The toxicity of eight chemicals to one week old and one month old striped bass, Roccus saxatilis, was determined. These chemicals included malachite green, acriflavine, formaldehyde, Diquat, sodium chloride, zinc, copper, and sodium sulfate. In addition the toxicity of artificial sea water and oil field brine based on chloride content was determined for one month old striped bass. Tests were conducted in one gallon wide mouth jars containing two liters of water. Reconstituted water held at 70 degrees Farenheit was used as the diluent. A wide range in toxicity between the two age groups was...

Bioassays were conducted on two herbicides, potassium azide and sodium azide, using the red crawfish, Procambarus clarki, and bluegill sunfish, Lepomis macrochirus, as test animals. These chemicals proved to be more toxic to crawfish than to fish. Comparisons are made of laboratory toxicity values and field tests conducted in rice fields. Recommended techniques for crawfish bioassays are described.

A total of 3,174 native fish of 29 species was tagged and released in Bayou D'Arbonne during the spring and summer of 1963. The distance and direction of movement of captured fish were recorded before inundation and ag,ain ,after the flooding of the 15,000-acre impoundment, D'Arbonne Lake, in January 1964. Of the 57 tagged fish returned before inundation, 54 were recaptured in the same locaJtion. One fish moved upstream for a distance of 3.3 miles and two fish moved downstream for ,an ,average distance of 6.8 miles. After the lake was filled, the fish exhibited extensive movements and only...

The fluctuation of water level as a lake management practice in Louisiana is explained using three lakes as examples. These lakes vary from 1,000 to 2,600 acres and are scattered over the state. Anacoco Lake, a 2,600 acre impoundment in central Louisiana, was fluctuated primarily for aquatic vegetation control. The vegetation was reduced 90% over a period of three years. The effects on the fish population as shown in annual rotenone samples were an increase in the game fish of available size and a decrease in the intermediate size sunfish. Fishing success improved markedly. Bussey...

Four lakes representing widely different types but of generally comparable size are compared from the standpoint of sustained angler harvest. The range in size is from 1000 acres to 2200 acres, in age from 5 years to 30 years, and from an artificial impoundment to a cut off stream channel. All four lakes are dependent to a large extent on the metropolitan area of Monroe, Louisiana for their fishing public. The catch rate varied from 0.4 pounds per hour on Bayou DeBiard to 1.2 pounds per hour on Bussey Lake. The yield varied from a high of 215 pounds per acre on Bussey Lake to a low of 14...

The toxicity to bluegill sunfish (Lepomis macrochirus Rafinesque) of 15 new or reformulated herbicides is presented. Six phenoxy compounds assayed were within toxicity limits previously reported. The endothal derivatives tested were also within previous limits but did show promise as an aquatic herbicide. Substituted urea compounds checked did not demonstrate any differences from those previously reported. A pelletized formulation of sodium arsenite was very toxic but should be more convenient to apply.

Bussey Brake Reservoir is a 2,200-acre impoundment located in northeast Louisiana near Bastrop, Louisiana. This lake was stocked by the Louisiana Wild Life and Fisheries Commission in 1959. It was opened to public fishing on April 30, 1960. Creel data collected through April, 1963, are reported. Fishing pressure varied from 46,000 to 59,000 fisherman trips per year during this period. From 91 to 109 man-hours were spent per acre to catch 76 to 102 pounds of fish per acre. The success ratio varied from 1.74 to 2.29 fish per hour. The fish averaged 0.37 to 0.53 pounds. The average...