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http://hdl.handle.net/1834/1160
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| Title: | A comparative study on the feeding habits of Oreochromis niloticus (Linnaeus) in Nyanza Gulf Lake Victoria and sewage fish ponds |
| Authors: | Getabu, A. |
| ASFA Terms: | Feeding behaviour
Fish ponds
Food organisms
Sewage |
| Issue Date: | 1994 |
| Publisher: | ICIPE SCIENCE |
| Citation: | Okemwa, E.; Wakwabi, E.O.; Getabu, A. (Ed.) Proceedings of the Second EEC Regional Seminar on Recent Trends of Research on Lake Victoria Fisheries, NAIROBI : ICIPE SCIENCE, p. 93-103 |
| Abstract: | Gut content analysis of Oreochromis niloticus from the Nyanza Gulf,
Lake Victoria showed that the bulk of the food items ingested
constituted bottom deposits and blue green algae. Among the live food
items ingested, blue green algae (Cyanophyceae) constituted 53.6%, the
diatoms (Bacillariophyaceae) 19.7%, aquatic invertebrates (mainly
Copepoda, Cladocera, and Rotifera) 12.9%, desmids (Desmidaceae) 7.7%
and lastly the green algae (Chlorophyceae) 6.2%. The most preferred
food items were: Spirulina laxisma and Nitzschia accicularis. The
least preferred food items were: Lyngbya circumcreta, Microcystis
aeruginosa and Pediastrum simplex. The quantity of food eaten by O.
niloticus to satiation ranged from 0.016-4.5% body weight. The high
growth performance index of the fish is attributed to the food on
which it feeds on. The results obtained from the Gulf are compared
with those of ealier work done on the food of the species in sewage
fish ponds which discharge their effluent into the lake. |
| URI: | http://hdl.handle.net/1834/1160 |
| ISBN: | 9290640789 |
| Appears in Collections: | Conference Papers
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