M.Sc. (Zoology) / The present investigation was conducted over a period of five years, from 1981 to 1986. The study comprised creel surveys on four selected angling waters in the Transvaal. Information obtained included the fish species caught, the numbers and mass contributed by each species towards the total catches, and the number of anglers who visited the angling waters during each month of the period of survey. This investigation was complemented by fish population studies in 1984 on each of the waterbodies concerned. The information obtained in this way was compared with results on fish populations estimates obtained during earlier studies, when use was made of mark recapture investigations of the angling fish species of these waters. In view of the dramatic changes that took ~lace in the population structures of some of these fish species over a period of 10 to 20 years, supported by recent fish catch statistics on anglers obtained during the creel survey, certain recommendations are made aimed at the improvement of the management of these and other popular angling waters in the Transvaal.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:uj/uj:11370 |
| Date | 04 June 2014 |
| Creators | Malan, Albertus Johannes |
| Source Sets | South African National ETD Portal |
| Detected Language | English |
| Type | Thesis |
| Rights | University of Johannesburg |
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