Theses and Dissertations

Title: The effect of pen-culture on the dissolved oxygen concentration in pens and in adjacent water

Name: Srimukda, Pichit

Degree: MS

Chair: Dr. Eddie W. Shell

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1973

Pages: 52

Keywords: Pens,Dissolved Oxygen Concentration.


The effect of pen-culture of channel catfish, Ictalurus punctatus (Rafinesque) and Tilapia aurea on the dissolved oxygen concentration of water in and adjacent to the pens was evaluated in a 25.5-acre pond (S-6) at the Fisheries Research Unit of the Auburn University Agricultural Experiment Station in 1972. Measurements of dissolved oxygen were made inside the pens, at the surface and 2.5 feet below the surface of the water. Outside of the pens, dissolved oxygen was measured at the surface, 2.5- and 5.0-foot depths at distances of 5, 10 and 30 m from the pens. Measurements more distant from the pens and in the main body of the pond were also taken. Pen-culture had more of a lowering effect on dissolved oxygen concentrations at the 5-foot depth than at the surface and at the 2.5-foot depth. The effect was obvious at 5 and 10 m. from the pens. There was little effect on dissolved oxygen concentration at 30 m. from the pens compared to the main body of water not considered to be affected directly from pen-culture. The dissolved oxygen concentration at the upper part of the pond was found to be lower than the lower part of the pond. Probably the smaller volume of water or the narrower area of surface water would account for the difference.

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