H. R. Schmittou

Influence of Daphnia Density on Survival and Growth of Paddlefish Larvae at Two Temperatures

Paddlefish (Polyodon spathula) larvae were fed live cultured Daphnia at 4 densities to determine if larval survival and growth were affected by Daphnia densities at low (ambient) (15.0° ± 1.5° C) and high (21.1° ± 0.5° C) temperatures. Survival of larvae increased with increasing densities of Daphnia in both experiments. Survival was higher in the low-temperature experiment than in the high-temperature experiment. However, larval survival was also influenced by cannibalism and a deformity affecting swimming behavior. Maximum growth of larvae during the 7-day experiments was 23.2 mm in...

The Culture Of Channel Catfish, Ictalurus Punctatus (Rafinesque), In Cages Suspended In Ponds

Since 1966,1 a study has been conducted in earthen ponds of the Auburn University Agricultural Experiment Station, Auburn, Alabama, to evaluate the potential of suspended cages for culturing catfish, Ictalurus punctatus (Rafinesque), from fingerlings to marketable size, and to develop the basic techniques necessary for the extension of the culture. This paper presents the developments obtained in the study. Experiments on effects of stocking density per volume of cage, cage positioning relative to the environment and to other cages, and cage mesh size on production are discussed....

Some Effects Of Supplemental Feeding And Controlled Fishing In Largemouth Bass-Bluegill Populations

The effects of supplemental feeding and controlled fishing in sUPPlementally fed largemouth bass-bluegill populations were studied in one control pond and two treatment ponds. The ponds were stocked in March and April, 1963. One treatment and the control pond were drained in October, 1964. The objective of this phase of the study was to determine the effects of supplemental feeding on growth rate, condition index, and survival of bluegill, and on population balance and total production. A second phase of the experiment, restricting the harvest in a given time interval on a 3.5-acre pond,...