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| Ezenwa, B.I.; Alegbeleye, W.O.; Anyanwu, P.E.. |
| The first phase of the project (1978 –19850 on fish seed abundance in Nigerian coastal waters was completed and published in 1985 proceedings of Fisheries Society of Nigeria (FISON). The second phase (1986 –1989) explored further, breeding grounds, nursery and schooling areas and traditional fishing gears used by local fishermen in the collection of seeds. An assessment is made of the destructive effects of industrial pollutants, oil installations, erosion, modern coastal developments, and tides in the distribution and abundance of seeds within the estuaries, creeks lagoons coastal rivers and their tributaries. Analysis of data collected showed a drastic reduction of an estimated 100 million fish seeds, Ezenwa et al (1985) to 51.7 million at the end of... |
| Tipo: Report |
Palavras-chave: Fish culture; Seed production; Fish culture; Seed production; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_6937. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/2412 |
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| Awa, J.N.; Anyanwu, P.E.. |
| Fish samples were collected from Lekki and Badagry lagoon and the Institute’s experimental fish farm, Lagos, from February 1983 to September 1984. Three thousand seven hundred and eighty six brooders and fingerlings rAnging between 3.5cm and 50.2cm in total length and weighing between 2.56g and 976,0g were examined. External parasites observed on Saratherodon galilaeus included monogenean trematodes, Gyrodactylus spp and Dactylogyrus spp; copepod, Argulus spp, and annelid (Piscilid) leeches on the body surface and gills. T. guineensis were infected by endoparasitic digenean trematodes and nematodes in the alimentary tract. Clarius gariepinus and Chrysichthys nigrodigitatus were infected with cestodes and nematodes. Infection was very high between... |
| Tipo: Report |
Palavras-chave: Aquaculture development; Fish farms. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/1264 |
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| Anyanwu, P.E.; Awa, J.N.. |
| Polyculture trial of selected cultivable fin fishes was conducted at the Institute’s experimental fish farm Ikoyi, Lagos from April 1983 to January 1984. The species, Mugil spp; Tilapia spp; Hemichromis fasciatus and Elops lacerta gave a total annual production range of 1219 kg to 1441 kg per hectare (extrapolated). Tilapia species had the highest growth potential constituting 80% of the total harvest. Supplementary diet used was food left over (waste) from selected big hotels in Lagos. Elops lacerta (predator) recorded the highest average body weight of 415.88g while the lowest weight 62.14g, was recorded for Mugil spp. Tilapia spp and Hemichromis fasciatus had average body weights of 72.5g and 6.7 0g respectively. |
| Tipo: Report |
Palavras-chave: Fish culture; Polyculture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/2390 |
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