Adoption Of Aquaculture Research Articles

Geospatial Quantification of Polycyclic Aromatic Hydrocarbons in the Wetlands in Egbeoma and Environs (Oil Bearing Communities) Warri North Delta for Pen Aquaculture Adoption as Innovative Technology for Sustainable Development in Nigeria

Oil exploitation often leave on their trails wetlands degradation from products or effluents discharges. This study investigated the polycyclic aromatic hydrocarbons content in the wetlands in Egbeoma, Aleima, Bear-Town, Odububa and Brohimi oil bearing communities for their suitability for the adoption of pen aquaculture as innovative technology for sustainable development in Nigeria. The study answered 5 research questions and tested a hypothesis. In achieving these, the wetlands in each settlement was mapped into 5 research grids and water samples were collected from 5 spots in each grid bulked, composites drawn were fixed with HNO4 and stored in ice-cooled flasks for analysis. The analytical standards adopted was EU 1881/2014 and the analytical instrument used for determination was Agilent Triple Quadrupole 7000. The mean results obtained were; pyrene, 0.76±0.11μg/l, chrysene, 0.73±0.01 μg/l, BaP, 0.71±0.10 μg/l, BaA, 0.72±0.01 μg/l and BbF, 0.72±0.02 μg/l. The mean results were further subjected to test of significance using ANOVA deploying SPSS IBM model 29 at 0.05 level of significance and the p-value was 0.062 thus accepting H¬o. The study thus concluded that the wetlands in Egbeoma and environs are not polluted with PAHs above the 1881/2014 stipulated concentration thus pen aquaculture can be adopted and deployed as innovative technlogy for sustainable development. The study recommendeded that the oil companies operating in Egbeoma and environs should continue to operate with high ethical standards and with the world best practices for oil industry; furthermore, the monitoring agencies NESREA and NOSDRA should continue with their surveillance to ensure that the oil companies keep up with their operation standards for pristine wetlands in Egbeoma and environs for the adoption of pen aquaculture as innovative technology for sustainable development in Nigeria.

Integrated multi-trophic aquaculture with sugar kelp and oysters in a shallow coastal salt pond and open estuary site.

Sustainable aquaculture includes the aquaculture of non-fed crops that provide ecosystem services including nutrient extraction and water quality improvement. While shellfish are the most farmed sustainable aquaculture crops in the USA, shellfish farmers in the northeastern US have an interest in diversifying their crops and incorporating seaweeds into their farms. In this study, we worked with oyster farmers to investigate the potential for farming sugar kelp, Saccharina latissima, across different environmental regimes in coastal Rhode Island USA. Kelp seed spools were outplanted at two time points in the fall/winter of 2017 and 2018 at four sites and cultivated until harvest the following spring. Kelp performance (length, width, yield), tissue content, and nutrient extraction were determined for each line in each year; oyster growth was also measured monthly for one year at each site. We found that kelp could successfully grow in both shallow coastal lagoons and estuarine sites, although the timing of planting and placement of sites was important. Lines that were planted earlier (as soon as water temperatures<15°C) grew longer and yielded more biomass at harvest; overall, kelp blade yield ranged from 0.36 ± 0.01 to 11.26 ± 2.18 kg/m long line. We report little variation in the tissue quality (C:N) of kelp among sites, but differences in biomass production led to differences in nutrient extraction, which ranged from 0.28 ± 0.04 to 16.35 ± 4.26 g nitrogen/m long line and 8.93 ± 0.35 to 286.30 ± 74.66 g carbon/m long line. We found extensive variability in kelp growth within and between lines and between years, suggesting that crop consistency is a challenge for kelp farmers in the region. Our results suggest that, as there is a lower barrier in terms of permitting (versus starting a new aquaculture farm), it may be a worthwhile investment to add sugar kelp to existing oyster farms, provided they have suitable conditions. At current market rates of US$0.88-$3.30 per kg, farmers in southern New England have the potential to earn US$2,229 per 60 m longline. While seaweed aquaculture is growing, considerable barriers still exist that prevent wide-scale kelp aquaculture adoption by existing aquafarmers.

A brief overview of the issues faced by Harmful Algal Blooms along Johor straits

Urbanization of coastal areas worldwide has increased due to an increase in the global population. The production of sustainable aquaculture is greatly impacted by a surge of this urbanization. In certain countries, particularly for individuals with more limited space in metropolitan areas, such as along Johor’s coastal area, aquaculture might well be a good strategy to maintain food availability (continuous production plus high-quality meals). Consequently, the adoption of aquaculture along the Johor’s coastal area has lead to Harmful Algal Blooms (HAB). This paper examines the evolution of the aquaculture industry of Malaysian Johor coastal areas in relation to HABs. In addition to HABs, the aforementioned metropolitan regions confront diverse economic and geographical obstacles when attempting to increase their aquaculture production sustainably. Those problems are therefore addressed using a variety of operations as well as surveillance techniques in this brief overview. Lockdowns and border prohibitions caused by the continuous COVID-19 infection have had a global impact. These logistical difficulties in the seafood industry have increased dependency on imported supplies. It is suggested that international decision- making, supervision, and knowledge exchange can successfully solve the challenges urbanized areas have in ensuring sustainable food security through the evolution within the aquaculture sector.

Characterization of Nile Tilapia (Oreochromis niloticus) Farming Intensities in Liberia

Fish farming is a rapidly growing food sector in developing nations. Liberia is an example of a least developed country with a large population facing high poverty levels. This has led to the adoption of aquaculture as one of the most important strategies for solving malnutrition and food security problems. However, since the introduction of fish farming, fish yields have been persistently low. To address the shortcomings in fish yields in Liberia, a study was conducted to provide information on fish farming intensities, types, and quality of feeds used by farmers in the culture of O. niloticus in Bong, Lofa, Nimba, and Grande Gedeh counties. Using stratified purposive sampling, 120 farmers were interviewed, and their fish feeds were sampled for proximate nutrient analyses. The results demonstrated that fish farming of O. niloticus in Liberia is mostly semi-extensive (81.6%), mainly practiced in paddy, barrage, and earthen ponds. On average, farmers produce 165.7 kg ha−1 of O. niloticus annually, translating to USD 414.25. Farmers use mixed feeding regimes, comprising farmer-made, kitchen waste, and blended commercial feeds. Farmers, on average, spend 43% of their operation cost on feeds, which makes it unsustainable to maintain semi-intensive systems. The main feed ingredients used by Liberian fish farmers are rice bran, wheat bran, corn, palm kernel, and fishmeal. Crude protein levels in feed ingredients are as follows: rice bran (3.7 ± 1.3%), wheat bran (16.4 ± 1.5%), corn (6.3 ± 1.1%), palm kernel cake (14.8 ± 1.4%), and fishmeal (63.8 ± 1.3%). Crude proteins were low in formulated feeds, ranging from 8–15% CP. From this study, poor yields and the slow growth of O. niloticus can be attributed to low-protein diets, rendering farming ventures unprofitable and unsustainable for resource-poor farmers in Liberia.

Drivers of adoption intensity of pond aquaculture: The case of Ghana

Drivers of adoption intensity of pond aquaculture: The case of Ghana

Drivers of aquaculture adoption and disadoption: the case of pond aquaculture in Ghana

Drivers of aquaculture adoption and disadoption: the case of pond aquaculture in Ghana

A study on the knowledge and perception level of rural youth towards adoption of aquaculture as an income generating source in coastal Odisha

Pisciculture contributes around 1% to India’s gross domestic product and over 5% to the agricultural GDP. The study was conducted in Balikuda, Biridi, Erasama, Jagatsinghpur, Kujanga, Naugaon, Raghunathpur and Tirtol blocks of Jagatsinghpur district. Both purposive and multistage random sampling methods were adopted for selection of the district, gram panchayat, village and respondents. A total of 180 numbers of respondents were selected for the purpose of the investigation. Based on the descriptive statistics, most of the respondents had medium knowledge about the general pond requirement and manuring and fertilization of the culture pond and harvesting. On the other hand, the youth entrepreneurs in pisciculture had low level of knowledge on predatory and weed fish eradication, stocking of the pisciculture. The youth entrepreneurs in pisciculture had high level of knowledge on harvesting of the pisciculture. Under marketing and storage perception factors 40.55 per cent of the respondents were strongly agreed with preservation of undisposed fishes is difficult. The main aim of pisciculture development program was for making substantial contributions to doubling of food production, improving the welfare of youth entrepreneurs, promoting exports and providing food and livelihood security to its rural youth entrepreneurs.

Moving up or going under? Differential livelihood trajectories in coastal communities in Vietnam

Moving up or going under? Differential livelihood trajectories in coastal communities in Vietnam

Uneven adoption of tilapia aquaculture in rural Solomon Islands

Across many Pacific Island Countries, food insecurity and malnutrition are on the rise. In response, governments, development agencies, and non-governmental organisations are promoting small-scale aquaculture as a complement to fish supplied through coastal fisheries. While small-scale aquaculture has been widely adopted in parts of Asia and Africa, its adoption in rural Pacific Island communities remains relatively low. In this paper, we draw on Diffusion of Innovation theory and apply a classification tree analysis to model the influence of farmers’ socio-economic attributes, communication channels, and attributes of the innovation, on the adoption of tilapia aquaculture. We compare 40 tilapia aquaculture adopters with 40 non-adopters in rural Solomon Islands. Our results show that farmers’ socio-economic attributes have the highest influence on tilapia aquaculture adoption. Tilapia aquaculture adopters were older, male, less subsistence-oriented, and had lower material styles of life than non-adopters. Information regarding tilapia aquaculture was most shared through informal channels, including relatives and word-of-mouth, compared with formal sources (e.g. fisheries extension officers, expert farmers, pamphlets, and posters). Lastly, while tilapia aquaculture was seen as compatible with socio-cultural norms and livelihood demands, its relative advantage and observability in comparison with other livelihood activities were perceived as low. Overall, this study suggests that tilapia aquaculture (and associated benefits) is not reaching the poorest and vulnerable groups (e.g. women or subsistence-oriented households) in rural Solomon Islands. These findings point to a need for in-depth understanding of socio-economic attributes of farmers, thus ensures strategies to support marginalised groups to participate in and benefit from tilapia aquaculture. The study also highlights the need to better utilise informal and locally appropriate communication channels to effectively support the spread of tilapia aquaculture in rural Pacific Islands contexts. Ultimately, this research can inform small-scale aquaculture development policies of the Government of Solomon Islands, and other Pacific Island Countries, to support the sector in contributing to rural food and nutritional security.

Determinants of adoption and disadoption of cage tilapia farming in southern Ghana

Determinants of adoption and disadoption of cage tilapia farming in southern Ghana

From fishers to farmers: Assessing aquaculture adoption in a training program for commercial fishers

Coastal communities in Maine are highly dependent on marine resources, especially the American lobster, Homarus americanus H. Milne-Edwards, 1837, fishery. Overreliance on a single species poses a precarious socioeconomic situation for these communities. Shellfish and seaweed aquaculture is viewed as a diversification strategy for fishers; however, the adoption of aquaculture by Maine fishers is understudied. The Aquaculture in Shared Waters program trains commercial fishers in shellfish and seaweed aquaculture, and provides an opportunity to understand the types of commercial fishers who are considering adoption. Here, we summarize initial findings from an ongoing longitudinal study of training program participants that aims to understand the process of integrating fishing and farming. We utilized participant observations, semi-structured interviews, and structured surveys to gather data on individual characteristics, motivations for considering aquaculture, and perceptions of barriers to the adoption of aquaculture. Most fishers report being interested in aquaculture as a diversification strategy and are most concerned about aspects of running an aquaculture operation. They report less concern about environmental uncertainty, the regulatory process, and community relations. Initial findings will guide future inquiry with commercial fishers about aquaculture integration, as well as provide practitioners with additional information to tailor future training.

Making better decisions: Utilizing qualitative signed digraphs modeling to enhance aquaculture production technology selection

Making better decisions: Utilizing qualitative signed digraphs modeling to enhance aquaculture production technology selection

Study of The Adoption Aquaculture on Their Socio Economic Status.In Flds Under Krishi Vigyan Kendra Dewas, Madhya Pradesh, India

l:- Studies revealed that the maximum profit from fish production can be achieved by adoption of proper recommended technology. Extent of adoption of the recommended fish production is one of the main reason contributing to low fish production. To improve the adoption of fish production technology, it is necessary to assess its level existing at actual situation. The perusal of data overall average adoption of fish technology revealed that out of the total fish farmers, the highest proportion of the fish farmers 36.67 per cent have adopted medium level of overall average adoption of fish technology before FLD's followed by low adoption 35.00 per cent and high adoption 28.33 per cent of overall average adoption of fish technology before FLD's respectively. I. INTRODUCTION Fishing in India is a major industry in its coastal states, employing over 14 million people. Fish production in India has increased more than tenfold since its independence in 1947. According to the Food and Agriculture Organization (FAO) of the United Nations, fish output in India doubled between 1990 and 2010. India is a major supplier of fish in the world. In 2006 the country exported over 600,000 metric tonnes of fish, to some 90 countries, earning over $1.8 billion. Fisheries and aquaculture are important sources for food and livelihoods for people along the world's seashores and waterways and influence the livelihoods for long number of population. Fish production is not only an indispensable component of agriculture since long, but also the most suitable food production system that has enormous potential to improve the socio economic status of the large percentage of the rural population engaged in fishing business. India is the sixth largest producer (5477mt.) of fish in the world after China (39937 mt.), Peru (7878 mt.), Japan (7408 mt.), Chillie (6366 mt.) and USA (5493 mt.). The total world fish production is 130882 mt. India is the second largest producer in the world of inland fish, next to China. Indian fisheries have made great strides during last five decades with an annual production of about 7.0 million tonnes in 2013-14. Fish farming is a lucrative business that can mitigate poverty in the country if practiced by adopting the necessary technologies. It requires less expand of land and it can be practiced in both rural and urban areas within the country. It also requires less time for its management and hence can be practiced by virtually everybody including the youths, house wives, working class and retirees. Studies revealed that the maximum profit from fish production can be achieved by adoption of proper recommended technology. Extent of adoption of the recommended fish production is one of the main reason contributing to low fish production. To improve the adoption of fish production technology, it is necessary to assess its level existing at actual situation. Keeping the above facts in mind, the present study was designed to conduct and formulated for the study with following objective. Objective: To study the adoption of aquaculture on their socio economic status.

English

The holothurian or sea cucumber is one of the marine resources, which has been used not only as luxury food for certain countries but also as medicines. Because of its’ higher nutraceutical and pharmaceutical values, sea cucumber has become one of the most important products and it has high price in international market and thus provide an important employment and income source to the coastal communities in many Pacific island countries including Malaysia. They have been harvested for hundreds of years for trade with Asia and were probably one of the worthy exports from the Indo-Pacific islands. Unfortunately, the increase in demand and price, combined with the development of cash economies and growing coastal populations in many islands, has led to widespread overfishing of the resource across much of this region. There is a high level of interest in adoption of aquaculture and stock enhancement techniques to restore production phases,but different capacity levels require implementation of different techniques.Some Pacific island countries and territories have completed successful research trials of hatchery, nursery and release techniques,and now have capacity to scale up this activity but such types of research are still in the initial stage in Malaysia. Factors that work in favor of successful aquaculture include pristine marine environments,long familiarity with sea cucumbers as a commodity,and traditional marine tenure systems that in some places can provide a basis for management of released sea cucumbers.Currently,the exploitation of sea cucumber turns out to be excessive and disrupts its sustainability. Aquaculture is the best way to prevent this severe problem. The success of sea cucumber culture is very depending on broodstock management,seed availability and suitable food for larvae as well as juvenile along with appropriate grow-out culture techniques under controlled rearing protocols.

Opportunities for aquaculture in the ethnic Garo community of northern Bangladesh

Opportunities for aquaculture in the ethnic Garo community of northern Bangladesh

Contribution of small water bodies and small-holder aquaculture towards poverty alleviation and enhancing household food security in Zambia

A study was conducted between January and May 2011, through administration of questionnaires and personal interviews in 6 of the 10 provinces of Zambia (namely: Lusaka, Eastern, Central, North Western, Copperbelt, and Southern) in order to assess the contribution of small water bodies (SWBs) and small-holder aquaculture towards poverty alleviation and enhancing household food security. Using simple random sampling method, a total of 120 respondents were selected. Results indicated that, a total of 1,082 SWBs were constructed throughout the country covering a total area of 5,410 ha. Most of them were constructed for irrigation purposes and as sources of drinking water for livestock. At the same time, aquaculture adoption at household and intra household levels had increased by 4.7% in all the districts over the years. There were more than 11,327 small-holder farmers who owned 21,658 ponds, covering 578.86 ha of land. There was also a 10% increase in number of learning institutions and the hospitality industries that had adopted aquaculture activities either for recreational or learning purposes. Existing statistics indicated that, there were 11,327 small-holder farmers who owned 21,658 ponds, covering 578.86 ha of land with an annual fish production of 3,985.16 metric tonnes, while that from SWBs stood at 2,705 metric tons. It was however noted that, the majority of these farmers (65%) produced less than 0.5 tons of fish per hectare/year, which was considered to be very low. However, fish production from SWBs remained almost unchanged because extension support had remained very inadequate and the designed programme to enhance productivity in community small-water bodies was not being implemented. Most of the fish harvested comprised mainly of: Oreochromis andersonii, Oreochromis macrochir, and Tilapia rendalli, which were readily acceptable to the consumers.The study also revealed that, adoption of small-holder aquaculture helped in poverty alleviation, improved rural household food security and better nutritional status compared to non-fish farming families. Most of the small-holder farmers cultivated various agricultural crops through irrigation and were also involved in livestock rearing, from which extra income was realized. Key words: Contribution, small-water bodies, small-holder aquaculture, poverty alleviation, food security, Zambia.

Is aquaculture development an effective tool for poverty alleviation? A review of theory and evidence

What role does the growth in aquaculture play in poverty reduction? In theory, aquaculture development could affect the poor either positively or negatively, so the article reviews the available empirical literature. There is almost no evidence of aquaculture reducing poverty directly, but the literature presents numerous examples of how the development of aquaculture can influence poverty-related outcomes. The article concludes that the answer to the question stated in its title is highly context-specific, so rigorous social impact assessment of major projects in the sector will continue to be necessary. Further, if the objective of aquaculture development is to reduce poverty, more emphasis should be placed on the labour-intensity of new technologies, and less on their yield increasing properties. Finally, more research is needed to improve our understanding of the main barriers to adoption of aquaculture by the poor, and the effect of that adoption on the welfare of the poor.

Knowledge Sharing and Other Decision Factors Influencing Adoption of Aquaculture in Indonesia

This paper examines the factors that influenced adoption of Floating Net aquaculture (FNA) utilizing the reservoir water by farmers who were resettled as a result of a dam constructed in Indonesia. Data from 400 households were analyzed and it was found that the main reason households adopted FNA was that they observed their friends', family's or neighbour's success with FNA. The main reason households did not adopt FNA was the difficulty in financing the initial capital cost. Additionally, based on further examination of information collected from 400 households as well as group interviews, tests were made to find whether the adoption factor changed with the timing of adoption. ‘Learning from others’ seems to be the most important factor during the earlier years but not in the later years of the adoption period. These findings provide important lessons for future policy in managing similar water resource development projects and this paper offers some policy recommendations.

Improving developing country food security through aquaculture development—lessons from Asia

Improving developing country food security through aquaculture development—lessons from Asia