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| Ajayi, T.O.. |
| The Institute succeeded in realising part of its long-term plan of extending its research activities to cover the entire coastline of Nigeria, with the opening of Sapele Rural Station in Delta State. The station had since commenced operation prioritising farmers' field test and incubation of NIOMR's validated research results and technologies An attempt was made to revitalise the work force through staff upgrading, promotions, confirmation of appointments and retirement from the service. I n all 103 officers in various cadres were affected. New postings were also effected during the year for more effectiveness.All-year-round statistical sampling of landings in the industrial fishing sector continued throughout 1999. Croakers, as usual, dominated the fish... |
| Tipo: Working Paper |
Palavras-chave: Marine sciences; Marine technology; Marine sciences; Http://aims.fao.org/aos/agrovoc/c_4613. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/2482 |
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| Ibe, A.C.; Ajayi, T.O.. |
| Published information favour the occurrence in certain years of wind related upwelling in Nigeria's inshore waters especially between July and September. This is corroborated by the prevalence of petroleum source beds, glauconite, phosphorite and periodic abundance of some fish including Engraulis encrassicolus, Sardinella maderensis and the bonga Ethalmosa fimbriata which are pelagic and are associated with upwelling phenomena. Examination of temperature and salinity data for 1978 - 81 suggested that upwelling occurred during certain periods of each year. However, wind data for the same period lacked details to support postulates of wind driven upwelling. Instead, dynamic upwelling resulting from the juxtaposition of the currents in the area is... |
| Tipo: Report |
Palavras-chave: Coastal upwelling. |
| Ano: 1985 |
URL: http://hdl.handle.net/1834/2444 |
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| Ajayi, T.O.. |
| Few publications on the Fisheries of Nigeria focus on the non-penaeid decapod stocks, and in general, reports discussing artisanal coastal and estuarine shrimp landings have been based largely on ad-hoc observations. Presumably as a consequence, only the big penaeid Penaeus notialis and Parapenaeopsis atlantica are identified, and that, only occasionally. More often than not, artisanal crustacean catches are usually lumped together as if they consist of a single taxon and treated under such group name as Caridae. The exception is that of Scott (1966) who estimated 1125 tons as the annual landings of filter traps fishing in the Bonny River to Forcados area, about 40kg per man per day. Tracing the abundance of white shrimp Nematopalaemon hastatus,... |
| Tipo: Working Paper |
Palavras-chave: Marine sciences; Marine technology; Marine sciences; Http://aims.fao.org/aos/agrovoc/c_4613. |
| Ano: 1997 |
URL: http://hdl.handle.net/1834/2481 |
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| Ajayi, T.O.; Talabi, S.O.. |
| The potential of the fishery resources of Nigeria (marine, brackish and freshwater) is assessed by means of primary and secondary data. The status of fish culture and its rapid development possibilities are discussed. Catch disposal and wastage therefore are critically examined. The inshore artisanal fisheries which have access to 128,000-170,000 mt of demersal pelagic and shellfish resources annually appear to be almost fully exploited. There is hope however for increased capture gear efficiency. On the other hand, the demersal stocks of the inshore industrial fishery, with a potential of 20,000 m.t. are still under-utilised. If poaching is eliminated, 3,500-4,000 mt of shrimp P. notialis can be harvested along with 7,000 mt of good sized fish as by... |
| Tipo: Report |
Palavras-chave: Fishery development; Fishery resources; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_2942. |
| Ano: 1984 |
URL: http://hdl.handle.net/1834/2427 |
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| Ajayi, T.O.. |
| Before the Nigerian Institute for Oceanography and Marine Research was established in 1975, the Research division of the parent body carried out extensive resources surveys of the inshore waters (0-50m depth), identified and documented most of the Nigerian Marine and brackish water fish and shrimp resources. The promulgation of the Sea Fisheries Decree of 1971 was based on the research findings of the division which also initiated the biological study of the commercially important fishes. The research efforts of the division provided the first ever scientific information on the coastal oceanography of Nigeria. The possibility of a viable brackish water polyculture was also established at Buguma and Lagos.... |
| Tipo: Report |
Palavras-chave: Inshore waters; Freshwater fish; Shrimp fisheries; Coastal oceanography; Historical account. |
| Ano: 1991 |
URL: http://hdl.handle.net/1834/1185 |
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| Ajayi, T.O.. |
| Examination of published information on temperature, oxygen and other enviromental prefrences of tuna like fishes suggests that the Nigerian EEz should have commercial quantities of fishes. ICCAT historical catch and effort data analysed are confirmatory. given the prevailing low level of maintenance conciousness, initial investmnt and skills required, purse-seine may not be decidedly superior to pole ond line as capture technique. Prefered size of vessel type and gear specific scenarios are described. It appears that fuel costs can attract some of the multinational fleets to Nigeria and that transhipment facilities and a local canery are advantageous. |
| Tipo: Report |
Palavras-chave: Fishery resources; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_2942. |
| Ano: 1984 |
URL: http://hdl.handle.net/1834/2552 |
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| Ajayi, T.O.. |
| Examination of published information on temperature, oxygen and other environmental preferences of tuna and tuna like fishes suggests that the Nigerian EEZ should have commercial quantities of the fishes. ICCAT historical catch and effort data analysed are confirmatory. Given the prevailing low level of maintenance consciousness, initial investments and skills required, purse-seine may not be decidedly superior to pole and line as the capture technique. Preferred sizes of vessel type and gear specific scenarios are described. It appears that fuel cost can attract some of the multinational fleets to Nigeria and that transhipment facilities and a local cannery are advantageous. |
| Tipo: Working Paper |
Palavras-chave: Fish catch statistics; Deep-sea fisheries. |
| Ano: 1984 |
URL: http://hdl.handle.net/1834/2325 |
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