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	Provedor de dados OceanDocs (2) Autor Lung'ayia, H.B.O. (2) Palavra-chave Clarias gariepinus (1) Freshwater catfish (1) Http://aims.fao.org/aos/agrovoc/c_14490 (1) Http://aims.fao.org/aos/agrovoc/c_3103 (1) Http://aims.fao.org/aos/agrovoc/c_6115 (1) Kenya (1) Migrations (1) Oreochromis niloticus (1) Population structure (1) Size distribution (1) Spawning (1) Victoria L. Fecundity Length-weight relationships Sex ratio Spawning Spawning Fecundity Sex ratio http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_15725 http://aims.fao.org/aos/agrovoc/c_7014 (1) Mais... Tipo do documento Proceedings Paper (2) Ano 1994 (2) País Belgium (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Some aspects of the reproductive biology of the Nile tilapia Oreochromis niloticus (L) in the Nyanza Gulf of Lake Victoria, Kenya OceanDocs Lung'ayia, H.B.O.. Some aspects of the reproductive biology of the Nile tilapia, Oreochromis niloticus population in the Nyanza Gulf of lake Victoria, Kenya were investigated from March to August 1991. The overall sex ratio was 2.08:1 in favour of males. A variation in sex ratio was observed with females predominating over males in lengths between 37.5 and 41.0 cm total length. Fecundity ranged from 864 to 6316 eggs with an average of 2141. The relationship between fecundity (F), and total length (L) and weight (W) was F=22.755 L super(1.2141); F=177.142 W super(0.342). The fecundity was compared to that reported elsewhere and together with spawning habits, were suggested as some of that factors contributing to the abundance of the... Tipo: Proceedings Paper Palavras-chave: Oreochromis niloticus; Kenya; Victoria L. Fecundity Length-weight relationships Sex ratio Spawning Spawning Fecundity Sex ratio http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_15725 http://aims.fao.org/aos/agrovoc/c_7014. Ano: 1994 URL: http://hdl.handle.net/1834/1274 Some observations on the African catfish Clarias gariepinus (Burchell) in the Sondu-Miriu River of Lake Victoria, Kenya OceanDocs Lung'ayia, H.B.O.. The African catfish Clarias gariepinus (Burchell), has an intermitent occurrence in the Sondu-Miriu river draining into lake Victoria. Observations were made to get basic information on size composition, migration, spawning period and food of this species in the river. A total of 376 fish samples of fish ranging from 11.9 to 101.1 cm in total length were examined from January to December 1989. A migration of the fish between the lake and the river waters is indicated. Small sized and immature fish were available in the river throughout the year but their numbers became minimal in the dry season. Large and mature specimens were caught mainly during the high water mark and rainy seasons of April-June and... Tipo: Proceedings Paper Palavras-chave: Clarias gariepinus; Migrations; Population structure; Size distribution; Spawning; Population structure; Spawning; Freshwater catfish; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_3103. Ano: 1994 URL: http://hdl.handle.net/1834/1159 Registros recuperados: 2 Primeira ... 1 ... Última

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