Department of Aquaculture and Fisheries Management
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Item The Role of International Donors in Aquaculture Development in Africa(IntechOpen, 2020-05-15) Olapade, Olufemi JuliusAquaculture, one of the fastest food production sectors in the world, has received and continues to receive funding from international donors and funding agencies since its introduction in Africa. The sector plays a key role in many emerging economies because of its potential to contribute to increased food production and at the same time help reduce pressure on fish resources. In spite of huge natural resources and a high demand for fish and fishery products, aquaculture production in Africa has yet to catch up with major players globally. Increased aquaculture production is hoped will greatly complement current efforts aimed at achieving the United Nations Millennium Development Goals (MDGs), especially the eradication of extreme poverty and hunger, reduction in child mortality, improvement of maternal health, prevention of diseases, promotion of gender equity and women empowerment. Africa however is the only region of the world where the present level of per capita fish consumption has declined over the past decades as populations grow. Researchers have adduced reasons for the setback to the development of Africa aquaculture. The unanswered question however is “Has donors’ support further the course of aquaculture development in Africa?”Item Occupational hazards, risk and injuries of fish processors in Tombo a coastal fish landing site, Sierra Leone, West Africa(Academic Journals, 2021-06-30) Olapade, Olufemi JuliusFish and fish products bear potential hazards and risks of public health concern. A preliminary study of hazards, injuries and risks among fisherfolk in Tombo, Sierra Leone, West Africa was carried out on November 2018. Sixty subjects from among the organized fish processor groups were interviewed with semi-structured questionnaire. Results obtained from the study were analyzed with Microsoft Excel and presented in tables and charts. The results of the study indicated that females (56.7%) were more involved in fish processing than males (41.7%); and the active age of these processors fell in the age range of 35-45 years. Married people (71.7%), dominated singles, widowed and divorced put together. Dominant religion in the study area was Islam and Christianity. Smoking (hot and cold), frying, packing, icing, filleting, seasoning or the combination of two or more according to the subjects was the prevailing processing methods used by processors in Tombo. Inherent hazards, injuries and risks reported by the respondents included high blood pressure, cardiovascular disease, nervous tension, insomnia, skin disease, bronchitis or asthma, muscular problems or those of the joint, long-term neck and back pains, eye problem, typhoid, malaria, and hearing problem caused by environmental noise. To mitigate the hazard and risks associated with fish processing in Tombo, training on appropriate fish handling and processing techniques; the provision of appropriate handling and processing equipment by responsible stakeholders were considered according to the subjects rational options. Key words: Occupation, hazards, injuries, risks, fish processors, Tombo, Sierra Leone.Item Anthropogenic pollution impact on physico-chemical characteristics of Lake Kivu, Rwanda(African Scholarly Science Communications Trust, 2012-08-03) Olapade, Olufemi JuliusAnthropogenic activities such as industrial effluent, domestic and agricultural waste disposal constitute major sources of pollution in water. The effects of these pollutants on the physico- chemical properties of Lake Kivu, Rwanda were investigated at three locations (Gisenyi, Kibuye and Cyangugu) between February 2005 and December 2006. Water samples used for physico- chemical analysis were collected from 12 stratified points on the lake. Samples collected were analysed and interpreted using appropriate international procedures. The physico -chemical properties measured were temperature, conductivity, pH, transparency, salinity, total alkalinity, dissolved organic matter (DOM), total dissolved solids (TDS), dissolved oxygen (DO), biological oxygen demand (BOD), nitrate – nitrogen, phosphate – phosphorus and sulphate. Mean water temperature measured (24.7 + 0.58 o C) was highest in Kibuye and lowest (24.5 + 0.31 o C) in Cyan gugu. The lake water was moderately hard with mean total alkalinity values of 88.1 ± 1.63mgL -1 ; 79.7 ± 2.36mgL -1 and 81.0 ± 2.46mg L -1 recorded in Gisenyi, Kibuye and Cyangugu respectively; salty and alkaline with mean pH values of 8.87 ± 0.07 in Gisenyi; 8.86 ± 0.06 in Kibuye and 8.91 ± 0.06 in Cyangugu. Total dissolved solids (TDS) level in the lake was above the 500mg L -1 prescribed by WHO while the mean biochemical oxygen demand (BOD) reading was within the range for unpolluted or moderately polluted lake. Water from the lake showed mineralization with mean conductivity values ranging from 1058 - 1184μS cm -1 in Gisenyi; 1058 - 1147μS cm -1 in Kibuye and 1031 - 1116μS cm -1 in Cyangugu. The mean dissolved oxygen values were below the 5mgl -1 limit recommended by WHO for fresh water fish species. SO 4- -2 and NO 3 – N concentration in the lake water does not constitute any serious health risk to both man and the aquatic organisms it supports. However, there is the need to constantly monitor the lake water to mitigate any build up of the ions to a hazardous level.