Community Based Fishery Management: A Case Study Of Acadja Method Of Fishing On The Badagry Creek, Ogun State, Nigeria

The objective of the study was to elucidate and analyze key conditions for communal acadja system on the Badagry creek in Ipokia Local Government Area of Ogun State. A sample size of 120 respondents was used for the study. Data were collected with structured questionnaires and analysed with the use of descriptive statistics such as means and percentages. The study revealed that most (86.9%) of the respondents were fully involved in the communal acadja with only 9% of them participated primarily for income generation while the larger percentage of the respondents involved for subsistence. It was observed that the fishers have some degree of tenure on the area of installation because of traditional regulatory mechanism in place. However, some constraints faced by the fishers as a result of implantation of acadjas include abandon of certain fishing gears, changing of fishing grounds, small fishing grounds and destruction of fishing gears. It was therefore recommended that acadja systems should be planned and implanted in the context of multiple uses of water body that integrated acadja systems with fishing and migration. Keywords: Acadja, , Community, Creek, fishery.Journal of Agriculture and Social Research Vol. 8 (1) 2008: pp. 28-3

Effect of Traditional smoking Method on Nutritive Values and Organoleptic Properties of Sarotherodon galilaeus and Oreochromis niloticus

Fish deterioration or spoilage is one of the greatest problems facing the fishing industry in Nigeria, and since ancient times, smoking has been used to preserve fish products and improve their taste, aroma and colour. The present study was carried out to determine and compare the effects of traditional smoking kiln on nutritional properties and sensory characteristics of Sarotherodon galilaeus and Oreochromis niloticus. A drum type smoking kiln was used for fish smoking. Raw and smoked fish samples were subjected to nutritional analysis and sensory evaluations. Nutritional analysis showed that the crude protein value of smoked O. niloticus (47.69 + 0.13%) was significantly (P<0.05) lower than the smoked S.galilaeus (50.12 +0.31%) while the crude fat values of S.galilaeus was slightly higher than the O. niloticus. The value of nitrogen free extract of S.galilaeus was higher than the value of O.niloticus with mean values of 18.00+ 0.02% and 0.32±0.01% recorded respectively while the metabolizable energy value of S. galilaeus was significantly (P<0.05) higher than O.niloticus . Sensory evaluation results revealed that smoked S. galilaeus was better in terms of juiciness and overall acceptability while O. niloticus had higher values in term of flavour, tenderness and texture. Based on the results of the study, smoked S. galilaeus and O. niloticus were nutritionally comparable. The results also showed that traditional smoking method is an important preservation method which could enhance the nutritive values of fishes and possibly reduce post-harvest losses.Keywords: Proximate composition, Sarotherodon galilaeus, Oreochromis niloticus, smoking, sensory evaluation

Economic Evaluation of Small Scale Fish Farmers in Epe Local Government Area of Lagos

The study was conducted to assess the profitability and socioeconomic factors influencing small scale fish farming activities in Epe Local Government Area of Lagos State. Primary data was generated from 100 fish farmers purposively selected. Data collected were analyzed using descriptive statistics, costreturns analysis and regression analysis. Findings revealed that fish farming was profitable with gross margin estimated at N610, 727.12 (USD $4071.51) and mean net income was N71, 742.58 (USD$478.28). Level of education, farm size, household size, fish farming experience, fish species culture, feed used, and number of labour used are significant and positive in the determination of the level of fish output. The study recommends that government should be committed to the funding of fish farming through the grant of loans and subsidization of fish farming inputs to produce multiplier effects on fish production

Observations on fishing methods in Oyan Lake, Nigeria

The study investigated the catch rate of fishing gears used by artisanal fisherman in Oyan lake. Catches from fishing operations conducted between June to December 2008 was analyzed to determine diversity of fish species captured by gillnet, cast net, hook and line, long line and trap.The results revealed that fourteen fish species belonging to thirteen families were recorded during the study. The family Momyridae was represented by two fish species while the remaining families were represented by one species each. it was observed that catches were dominated generally by immature individual with about 58.4% of total catches being undersized fishes. Six out of thirteen fish species were caught by all the fishing gears while gillnet and castnet caught all the fish species in the study. Gillnet efficiency was the highest with catches dominated by Heterotis niloticus, Tilapia zillii, and Clarias gariepinus while long line was the least efficient in terms of fish caught. Further results also showed that peak biomass was recorded in September accounting for 17.5% of the total monthly fish biomass while the minimum biomass was recorded in December. All these observations indicate there is need to improve upon the design of gears and their proper use

FISHERIES EXTENSION SERVICES IN OGUN STATE

The study attempts to assess the current trends, impact and constraints of fisheries extension services to artisanal fishers in Ogun Waterside Local Government Area of Ogun State. The survey approach was used to generate the needed data using 120 structured questionnaires. Simple statistical techniques such as means and percentages were used to analyse the data. Results of data analysis showed that 95 percent of the respondents, mostly in the middle age group were aware of the presence of extension support services. Ogun State Agricultural Development Project with 86.3 percent was more popular of the two institutions responsible for extension in the state services. The rating of extension service was low as only 36 percent reported that fisheries extension services was helpful to them. The study concluded that the support services were lacking in areas of provision of credits, fishing inputs and other needs of the fishers in the costal fishing villages. It is therefore suggested that adequate attention should be given in all deficient areas in order to improve extension services for increased fish production in Ogun State. African Journal of Livestock Extension Vol.3 2004: 78-8

An Investigation on Industrial Fishery in Lagos State, Nigeria

This study essentially evaluated and analyzed the state of industrial fishery sector in Lagos State Nigeria. The catch composition, by-catch composition fishery activity, threat to fisheries resources and constraints of the industrial fishery was investigated. The instrument of the study was structured questionnaire administered between May and August, 2010 on member of staff of the six fishing companies in Lagos State. The findings showed that majority (75%) of the respondents target fishes while the remaining 30% of the respondents target shrimps. Most (81.7%) of the respondents rated fishing activities low with average tonnes per vessel per fishing trip put between less than 1tonne and 10 tonnes tonnes and average fish catch per year put between 1 tonne and 200 tonnes. Further result showed that a total 15 fish species listed as predominant Pseudotolithus sp Galeoids decadactyles and Arius sp were in abundance while predominant shell fish were Panaeus notialis, Parapenoeopsis atlantica and Penaeus karathurus and by-catch associated with the industrial fishery were carb, turtle, octopus and dolphin. The study further revealed inadequate monitoring and enforcement of laws, over fishing, pollution and water hyacinth were the threats to fisheries resources while high cost of AGO, insecurity, high cost of fishing vessels, lack of machineries spare parts, taxation and poor shore-based infrastructural facilities were responsible for low performance of the sub sector. It was therefore recommended that government should put in place appropriate specific policies, legislation and regulation, institutional support for development of sub-sector

Morphometric and Meristic Analysis of Gymnarchus niloticus (Teleostei: Gymnarchidae) from Oyan Dam and Epe Creek in South West, Nigeria

A study of morphometric and meristic characteristics of Gymnarchus niloticus from Oyan dam in Ogun State and Epe creek, Lagos State used three meristic and ten morphometric measurements in relation to standard length and head length. The body measurements and proportions did not bring out definite demarcation in the morphology of Gymnarchus niloticus from the two locations, even though; slight differences were observed in all the parameters measured. Specimens from Oyan dam were longer (mean = 92.6 mm) than those from Epe creek (75.6 mm). Similarly meristic counts also showed slight differences in the two locations with dorsal fin ray count in Oyan dam specimens higher (165.7) than Epe Creek specimens (155). The t-Test revealed no significant differences exist in these character ratio data at 5% probability level of significance. These results have in dictated that minor difference observed in morphometric characters and meristic counts may be due to environmental influence on the species.Key words: Gymnarchus niloticus, morphometric characters, meristic characters, Oyan dam, Epe cree

An analysis of factors affecting aquaculture development in Ogun state, Nigeria

No Abstract.Global Journal of Agricultural Sciences Vol. 5 (2) 2006: pp. 101-10

Anatomical Studies on the Spinal Cord of the Greater Cane Rat (Thryonomys swinderianus, Temminck) I: Gross Morphometry

No Abstract

An analysis of some heavy metals in the water, sediments and some fishery organisms from Yewa Lagoon, Nigeria

The concentration of heavy metals(Zn, Ni, Pb, Cd and Cu) in the muscle of three fishery organisms (Chrysicththys nigrodigitatus, Sarotherodon galilaeus and Peneaus monodon)and in environmental samples of waterand sediment were tested in Yewa Lagoon, Nigeria. Five fishing villages along the lagoon were selected as the sample sites where these metals were tested. The heavy metal content in the muscle of the fishery organisms was Zn > Ni >Pb> Cu > Cd;Zn > Ni >Pb> Cd > Cu and Zn > Ni >Pb> Cd > Cu in C.nigrodigitatus, S. galilaeus and P. monodon respectively. The heavy metal concentrations in the sediment was Zn >Pb> Cu > Ni > Cd. However, nickel and cadmium were not present in the water at two sampling sitesof Yewa Lagoon.The water of Yewa Lagoon is polluted with all the five heavy metals which were all higher than the WHO standard. The concentration of Zinc in the fisheryorganisms were below the WHO standard. However, the high concentration of zinc in the water (which is well above the WHO standard) could be associated with the fact that zinc is naturally abundant in Nigeria soils.Keywords: Heavy metals, sediments, fishery organisms, lagoon