A comparative study of consumption rates and preference for some species of aquatic plants by Tilapia rendalli
The daily consumption rates and preference of juvenile Tilapia rendalli for some macrophytes, Ceratophyllum demersum, Lagarosiphon major, Najas pectinatas and Valisneria aethiopica were determined. Fish were offered single macrophyte diets to determine daily consumption and a mixture of the 4 macrophytes in equal quantities to determine selection. Consumption rates were 821.50 mg, 829.05 mg, 940.00 mg and 2293.53 mg per fish per day, respectively. The differences in consumption rates were significant. Preference was shown for V.aethiopica, whilst C.demersum was least selected. Fish fed on single species lost weight whereas those fed on a variety of macrophytes gained in weight.
Saved in:
| Main Author: | |
|---|---|
| Format: | monograph biblioteca |
| Language: | English |
| Published: |
Department of National Parks and Wild Life Management
1988-10
|
| Subjects: | Biology, Ecology, Zimbabwe, Lake Kariba, Tilapia rendalli, aquatic plants, diet habits, feeding behaviour, food preferences, |
| Online Access: | http://hdl.handle.net/1834/24972 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|