THE ARTIFICIAL REPRODUCTION AND POND REARING OF THE AFRICAN CATFISH CLARIAS GARIEPINUS
TABLE OF CONTENTS
A manual/reader prepared for the training course given at Kisumu from 3-8-94 to 8-8-94 for fish farm managers and extension officers of the project for the development of small scale fish farming in the lake basin area (FAO/UNDP/BSF-KEN/86/027)
Gertjan de Graaf
Aquaculture and Fisheries Consultant
Kisumu, KENYA, August 1994
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2. THE AFRICAN CATFISH (Clarias gariepinus and Clarias anguillaris)
3. MATURATION PROCESSES
3.1. Oocyte development
3.2. Ovarian development
4. NATURAL REPRODUCTION OF THE AFRICAN CATFISH
5. ARTIFICIAL REPRODUCTION OF THE AFRICAN CATFISH
5.1 Induced propagation without hormone treatment
5.2. Semi-artificial reproduction through hormone treatment
5.2.1 Hormone induced reproduction in ponds
5.2.2. Hormone induced reproduction in happa placed in a pond
5.2.3 Hormone induced reproduction in concrete tanks with a gravel substrate.
5.3. Artificial reproduction
5.4 Incubation of fertilized eggs
6. FRY NURSING IN EARTHEN PONDS
6.1 Pond preparation
6.2. Stocking of the catfish larvae
6.3 The duration of the rearing period and cannibalism among the catfish fingerlings.
6.4. Predator control
7. POLY CULTURE OF AFRICAN CATFISH AND NILE TILAPIA
8. MONO CULTURE OF THE AFRICAN CATFISH
9.1 Diseases of eggs and hatchlings
9.2 Diseases in grow out ponds
10. TRAINING PROGRAMME
Annex 1: The artificial reproduction and fingerling production of the African catfish Clarias gariepinus (Burchell 1822) in protected and un protected ponds, de Graaf et al., in press.
Annex 2: Succesfull recruitment control of Nile Tilapia, Oreochromis niloticus by the African catfish, Clarias gariepinus (Burchell 1822) and the African snakehead, Ophiocephalus obscuris, a biological analyses, de Graaf et al., in press.