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Abstrakty
The females and males of Clarias gariepinus mature at about the same size. The peak breeding season was found to be between April and August. Fecundity varied exponentially with total length of the fish (r =0.834) and linearly with fish weight (r =0.874).
Dojrzewające samice i samce C. gariepinus mają podobną wielkość. Szczyt tarła stwierdzono między kwietniem i sierpniem. Płodność zmieniała się wykładniczo wraz z całkowitą długością (r =0.834) i liniowo wraz z ciężarem ryby (r =0.874).
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p.53-60,fig.,ref.
Twórcy
Bibliografia
- Aboul-Ela I. Amer F. and El Bolock A.R. 1973. Studies on spawning behaviour of Clarias lazera Cuv. et Val. in fish farms of the A.R. Egypt. Bull. Zool. Soc. Egypt, 25, 25-33.
- Bagenal T.B. 1978. Aspects of fecundity. In: Gerking S.D. (ed.) Ecology of freshwater fish production. Oxford, Blackwell, 165-201.
- Bruton M.N. 1979. The breeding biology and early development of Clarias gariepinus (Pisces: Clariidae) in Lake Sibaya, South Africa, with a review of breeding in species of the subgenus Clarias. Trans. Zool. Soc. London, 35, 1-45.
- Haylor G.S. 1989. The case for the African catfish, Clarias gariepinus (Burchell, 1822), Clariidea: A comparison of the relative merits of Tilapine fishes, especially Oreochromis niloticus (L.) and C. gariepinus (Burchell) for African aquaculture. Aquaculture and Fisheries Management, 20, 279-285.
- Hogendoorn H. 1979. Controlled propagation of the African catfish, Clarias lazera (Cuv. et Val.). 1. Reproductive biology and field experiments. Aquaculture, 17, 323-33.
- Jocque R. 1977. Une étude sur Clarias senegalensis Val. dans la région du Lac Kossou (Côte d’Ivoire). Preliminary studies on Clarias senegalensis Val. in the region of Lake Kossou (Côte d’Ivoire). Hydrobiologia, 54, 49-65.
- Kirk R.G. 1972. Economic fishes of Lake Chilwa. Rep. Fish Dev. Malawi, 5, 1-13.
- Lagler K.F., Bardach J.E., Miller R.R. and Passino D.R. 1977. Ichthyology. New York, John Wiley, 506 pp.
- Lehri G.K. 1967. Cyclical changes in the ovary of the catfish Clarias batrachus (L.). Acta anat., 69, 105-124.
- Lehri G.K. 1967. The annual cycle in the testis of the catfish Clarias batrachus (L.). Acta anat., 67, 135-154.
- Loiselle P.V. 1972. Ghana preliminary survey of inshore habitats in the Volta Lake. Fish. Report. FAO FI.DP./GHA/67/510/2, 105 pp.
- Micha J.C. 1973. Étude des populations piscicoles de l’ubangui/et tentatives des sélection et d’adaptation de quelques espčces a l’étang de pisciculture. Notes Docum. Peche Piscic. Centre Techn. Forest. Trop., 1973, 1-110.
- Mills H.D. 1966. The African mudfish Clarias lazera. Ibadan Univ. Press., 45 pp.
- Piper R.G., McElwain I.B., Orme L.E., Mc Craren J.P. and Leonard J.R. 1982. Fish hatchery management. Washington. United States Department of Interior, Fish and Wildlife Services, 517 pp.
- Richter C.J.J. 1976. The African catfish, Clarias lazera (Cuv. et Val.) a new possibility for fish culture in tropical regions? Misc. Pap. Landbouwhogeschool, Wageningen, 13, 51-70.
- Rinne J.N. 1975. Age, growth, tagging of Tilapia spp. and reproductive biology of siluroid catfish in Lake Victoria. Rep. E. Afr. Freshwat. Fish Res. Org., 1-58.
- Simpson A.C. 1959. Method used for separating and counting the eggs in fecundity studies on the plaice (Pleuronectes platessa) and herring (Clupea herengus). Occ. Pap. FAO Indo-Pacific Fish. Comm., No 59/12, 33 pp.
- Sundararaj B.I. 1981. Reproductive physiology of teleost fishes, a review of present knowledge and needs for future research. Rome, FAO. UNDP/FAO/ADCP/REP/81/16, 182 pp.
- Viveen W.J.A.R., Richter C.J.J, Van Oordt P.G.W.J., Janssen J.A.C. and Huisman E.A. 1986. Practical manual for the culture of the African catfish (Clarias gariepinus). The Hague, D.G.I.C. Ministry of Foreigh Affairs, 94 pp.
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Bibliografia
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