• Fresh and brackish water shrimps of economic importance in the Niger Delta

      Powell, C.B. (1983)
      In the author’s opinion, extremely little is known of fresh and brackish water species, i.e. those supporting the traditional artisanal fisheries and most likely to include suitable candidates for aquaculture. The immediate purpose of this paper is to document the species which are encountered in artisanal fisheries, give available background information on them relevant to fisheries and aquaculture work, and to provide a means for their identification in the field by nonspecialists. Scope of Coverage the "Niger Delta" in the title reflects the geographical area of the author’s personal experience. For purposes of identification, the scope of the paper is West African for brackish species, and Nigerian for freshwater species
    • Fish production from aquatic weeds

      Okafor, L.I. (1983)
      Irrigation in the eleven River Basin Authorities and in particular in the South Chad Irrigation Project and the Baga Polder Project is increasing and demands high yearly investments for aquatic weed control in canals and drains. If the weeds are biologically controlled by the grass carp (Ctenopharyngodon idella Val.), the costs will be turned into profit, particularly when the fish production (resident fish plus grass carp) is harvested and sold for food. The use of irrigation canals and drains for aquaculture in the form of fish polyculture may be a wise step towards increased fish production. This paper highlights the concept of fish production from aquatic weed control and concludes that it is a proven profitable venture in several countries
    • Polyculture: A boost to the Green Revolution Programme

      Ekanem, S.B. (1983)
      Polyculture, as presently practiced in Nigeria, focuses interest mainly on finfish. This practice, apart from neglecting indigenous valuable species such as clams and water snails, does not make full use of existing biomass. This paper suggests possible deviations from normal practice. Inclusion of macroinvertebrates in a polyculture system and stocking, temporary bodies of water with seasonal species such as the fresh water crayfish are suggested. A final suggestion is to develop a polyculture of swamp rice and crayfish
    • Strategies for transfer of aquaculture technology to small-scale fish farmers in Nigeria

      Ojike, N.A.C. (1983)
      There is increasing awareness of aquaculture in Nigeria today for a number of reasons namely: water pollution, declining catch and the awareness of the attractiveness of aquaculture as an investment area and a pivotal point for national development. The development of aquaculture in Nigeria, requires the building up of institutions at the grassroot level and the formulation of policies and programmes for the small fishfarmer. This of course would be backed up by a sound technology generation, verification and packaging, dissemination and use programme
    • Preliminary studies on hypophysation technique of induced breeding of Clarias lazera

      Ebietomiye, F.O.; Ojo, E.O. (1983)
      Fry supply is still the most serious problem yet to be solved in the culture of Clarias lazera in ponds. The object of the experiment is to compare the effect of fresh pituitary extract with that of the synthetic hormone with a view to determining the dosage. Ten trial runs were made using either the fresh pituitary extract of the human chorionic gonadotropin (HCG) at various concentrations. It was however, noted that the response of a particular set varies with the concentration. The actual result achieved from each set is highlighted under each experiment
    • A synopsis of the traditional fishing gears used in artisanal fisheries along the upper part of the Cross River

      Etcheri, I.E.; Lebo, P.E. (1983)
      Artisanal fishery is the main type of fishing practised occupationally by the fishermen along the upper sectors of the Cross River. No form of mechanised fishing has so far been introduced to the fishermen in these areas. This study has attempted to find out the different gears used, when and where used along the main river channel, its tributaries and flood plains. An effort has also been made to provide some information on the types of fishes caught with the different gears. Recommendation for effective management are also advanced
    • Strategies for increasing freshwater fish production in the Green Revolution Programme

      Olatunde, A.A. (1983)
      Sources of fish and fishery products in Nigeria were reviewed. The problems of various agencies involved in freshwater fish production in Nigeria were also analysed, such problems included shortage of manpower, inadequate training for personnel, shortage of funds, lack of infrastructures, among others
    • Developing a viable fish farming industry in Nigeria -- an alternative strategy to the strategy in the Green Revolution Programme

      Oyatoye, E.T.O. (1983)
      A study was embarked upon with the twin objectives of reviewing the Green Revolution Strategy for accelerating fish production in the country and proposing an alternative strategy, a private sector approach. Some of the programmes listed in the Green Revolution are very necessary for developing a viable - fish farming industry and that money spent under such programmes is money well spent. Programmes that are also desirable but need to be considerably expanded were identified. Other programmes have been criticised on the grounds that the method chosen to achieve the desired objectives is fraught with dangers if sufficiently long run view of fisheries development is taken
    • Trawling gear and towing power of the Nigerian inshore fishing trawlers

      Solarin, B.B.; Udolisa, R.E.K. (1983)
      This paper deals with the relation between trawling gear and towing power of the Nigerian inshore fishing trawlers. Information on the size as well as weight variations of the existing otter boards as they relate to the horse power of the engine and length of warps in relation to fishing depth are given
    • Lake Chad fisheries and its importance in the Green Revolution Programme

      Sagua, V.O. (1983)
      Lake Chad fisheries contributes about 13% of all fish produced by the inland and coastal states of the nation and supports a large population of fishermen and allied workers. The species of freshwater fish produced from the Lake such as Gymnarchus, Clarias and Heterotis are very popular with the fish consumers in Nigeria; hence Lake Chad processed fish is transported long distances to southern Nigerian markets. Lake Chad thus contributes significantly to the provision of fish protein and to the Green Revolution Programme
    • Fisheries laws and regulations of Nigeria and room for further developments

      Adebolu, V.O. (1983)
      The fisheries laws and regulations presently operative in Nigeria are on marine waters. These include: 1) The Sea Fisheries Decree (Act) of 1971; 2) The Sea Licencing Regulations of 1971; 3) The Sea Fisheries (Fishing) Regulations of 1972; and 4) The exclusive Economic Zone Decree of 1978. Attempts have also been made to produce the Inland waters Fisheries Regulation
    • Various types of canoe fishery in Ikot Abasi

      Essen, A.A. (1983)
      Ikot Abasi, one of the six maritime local government areas in the Cross River State has a longstanding reputation as a fishing centre in Nigeria. Here various types of fishery are practiced. A description is given of 5 definitive areas, the criteria of which are either on the type of gear used, for example hook fishery or on the type of fish species landed e.g. Bonga. For a period of 12 months some detailed observations were registered on how they operate in 4 coastal fishing ports of Uta Ewa, Okoroeta, Iko and Kampa all on Atlantic coastline of Opobo
    • A review of the commercially exploited marine fishery resources of Nigeria

      Nsetip, N.U. (1983)
      The annual estimated total marine fish catch in Nigeria for the period 1971 to 1979 is 0.3299 million metric tons. The differential distribution pattern of the predominant fish groups for the maritime states, the component species, their life habits in relation to hydrographic factors leasing to seasonal fluctuations in the fisheries are highlighted, focussing also on the types of fishing carafts and gear in common use along the coastal states and the fish species obtained from them. The landings by the exploratory and commercial fishing trawlers including the distant water vessels (imports) form about 4.24% of the total marine fish landing
    • Artisanal and inshore fisheries development in Nigeria: Status paper on the FAO/UNDP Project NIR/77/001

      Gnanadoss, D.A.S.; Aderounmu, A.A. (1983)
      The UNDP/FAO supported Federal Fisheries Project for the Development of Artisanal and Inshore Fisheries in Nigeria has the specific objective of increasing fish production through an integrated approach aimed at upgrading the rural coastal fishermen and improving their living conditions. The project has an operating life-span of three years and envisages a total outlay of nearly N3 million in terms of personnel and services. This paper attempts to review the activities of the project during the first two years of the operational phase and highlight some of its specific achievements.
    • Techno-economic considerations of shark driftnet fishery, off Lagos coast, Nigeria

      Udolisa, R.E.K. (1983)
      Experimental fishing operations with driftnets were conducted in Lagos coastal waters with a view to finding out appropriate gear for effective exploitation of sharks and other pelagic fish species that are not normally caught in trawls. The design and fabrication of the driftnets as well as the fishing trials were undertaken between May, 1977 and April, 1978. Six baited driftnet sets of equal panels with three stretched mesh sizes of 190.5mm; 228.6mm and 241.3mm were used. Analysis were carried out on species composition of catches, weight and number of species/group of fish, catch efficiency of the driftnets as well as on operating costs and financial returns
    • The role of agricultural co-operatives in the development of fisheries in Nigeria

      Fisheries Society of Nigeria (1983)
      Problems faced by the fishery sector in Nigeria are examined and the role that agricultural cooperatives play in fishery development considered. The importance of improving the marketing and distribution system through fishermen cooperatives is stressed. It is concluded that for the successful implementation of fishery products, there is need for regular communication, cooperation and collaboration among relative agencies
    • Fishermen cooperatives in the Green Revolution Programme

      Adeyemo, R. (1983)
      The aim of this study was to examine areas in which fishermen cooperatives can become involved and then suggest operational guidelines in order to increase fishermen income and also to make the Green Revolution Programme a success through increased production of fish. The paper enumerated different areas in which fishermen cooperatives can participate. These include: thrift and credits, thrift and savings, consumers and building cooperative societies. It is the belief of the author that the expansion of fishermen cooperatives into the areas mentioned in this paper can enable members to process and market their products more economically, buy supplies and equipment in large quantities and obtain lower cost credit
    • Introduction of collection and distribution programme for the small-scale fisheries in Ondo State

      Toh, J.H. (1983)
      Details are given of a programme for fresh fish collection and distribution in Ondo State, Nigeria. Collection centers, organization and managerial structure, collection scheme, trade system, price determination, management and distribution are described
    • A review of manpower training for Nigeria's fishing industry

      Olaniawo, A.A. (1983)
      An examination is made of the organization and administration of fisheries training institutes in Nigeria, highlighting their inadequacies in achieving required goals. A systems approach to fisheries manpower training is described which is based on 4 principles: 1) wholeness; 2) systematization; 3) compatibility; and 4) optimization
    • A quantitative analysis of demand for fish in Nigeria

      Fatunia, G.T.; Oladimu, O.L.; Ladipo, O.O. (1983)
      The paper discusses the relevant theoretical considerations and specifies a model in an attempt to quantify those variables, the changes of which affect the internal demand for fish in Nigeria. Regression analyses carried out show that a generally rising trend in per capita income will increase the demand for fish, other things being equal. It is further revealed that even as the price of fish goes on increasing, consumers' demand for fish also tend to rise. The paper concludes by emphasizing the need for a fish consumption survey in the country's fish demand