The food and feeding habits of Orechromis niloticus in Lakes Edward, George and Kazinga channel (Uganda)
The gradual qualitative and quantitative changes that have taken place in Oreochromis niloticus fisheries of Lakes Edward, George and Kazinga Channel were suspected to be due to a major decline of phytoplankton, the major food item of O.niloticus. Quantitative and qualitative analysis of organisms and other items present in water samples and stomach contents of the fish however, showed that the phytoplankton dominated by in order of importance, the bluegreen algae, diatoms and green algae, are still available in the water system and consumed by the fish. Higher plant materials, rotifers, insects,chironomids, copepods in addition to plenty of detritus material were also identified in the stomach contents of the fish. Negative changes that have occurred in O.niloticus fishery therefore may not be attributable to lack of adequate food in the water environment but to other factors possibly of human impact that need investigations.
| Main Authors: | , , |
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| Format: | monograph biblioteca |
| Language: | English |
| Published: |
Fisheries Research Institute
1990
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| Subjects: | Fisheries, |
| Online Access: | http://hdl.handle.net/1834/34812 |
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