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• 1. [Article] An Ecological-Economic Simulation Model of Genetic interaction Between Farmed and Wild Salmon

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: An Ecological-Economic Simulation Model of Genetic interaction Between Farmed and Wild Salmon Author: Hindar, Kjetil, Liu, Yajie, Skonhoft, Anders, Diserud, Ola Abstract only. Title: An Ecological-Economic Simulation Model of Genetic interaction Between Farmed and Wild Salmon Author: Hindar, Kjetil, Liu, Yajie, Skonhoft, Anders, Diserud, Ola Abstract only. Close

• 2. [Article] Influence of Climate Change and Natural Disasters for Fishing Communities and Propose Appropriate Policies

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  Citation × Citation Citation Abstract Copy Title: Influence of Climate Change and Natural Disasters for Fishing Communities and Propose Appropriate Policies Author: Quang, Khanh Van Tran, Nguyen, Linh No poster available. Title: Influence of Climate Change and Natural Disasters for Fishing Communities and Propose Appropriate Policies Author: Quang, Khanh Van Tran, Nguyen, Linh No poster available. Close

• 3. [Article] Measurement of Technical Efficiency of Farmed Catfish Production in Southwest, Nigeria: A Stochastic Frontier Production Function Approach

  Catfishes are the most popularly raised and consumed fish species in Nigeria. Given changes in the dynamics of the aquaculture sector, this paper estimated technical efficiency and factors contributing ...

  Citation × Citation Citation Abstract Copy Title: Measurement of Technical Efficiency of Farmed Catfish Production in Southwest, Nigeria: A Stochastic Frontier Production Function Approach Author: Mafimisebi, Taiwo Ejiola Catfishes are the most popularly raised and consumed fish species in Nigeria. Given changes in the dynamics of the aquaculture sector, this paper estimated technical efficiency and factors contributing to it using data collected from 108 farmers stocking catfish in earthen ponds in the study area. Catfish aquaculture was found to be capital intensive. The most expensive item of total variable cost (TVC) was fish feeds which accounted for 61.4% and 67.8% of TVC in Ondo and Ogun States, respectively. There were no significant differences in cost items between the two States. Empirical analysis showed wide variations in predicted TEs across farms ranging from 48.4% to 77.2% in Ondo State and 45.4% to 82.1% in Ogun State with means of 64.0% and 67.0%, respectively. The results also indicate that coefficients of the quantity of feeds, total number of ponds, labour and number of times pond water is changed were positive and highly significant in catfish production. The inefficiency model revealed that age and farming experience coefficients (significant) and education level coefficient (not significant) were negative indicating that older and more experienced farmers tended to be less inefficient. The test of various null hypotheses showed that the inefficiency effects were related to the age, management pattern, years of experience and education level of farmers. The study identified the opportunities that exist for improving TE in the study area. Results of the analysis having implications for the aquaculture industry and for policy-makers were discussed. Title: Measurement of Technical Efficiency of Farmed Catfish Production in Southwest, Nigeria: A Stochastic Frontier Production Function Approach Author: Mafimisebi, Taiwo Ejiola Catfishes are the most popularly raised and consumed fish species in Nigeria. Given changes in the dynamics of the aquaculture sector, this paper estimated technical efficiency and factors contributing to it using data collected from 108 farmers stocking catfish in earthen ponds in the study area. Catfish aquaculture was found to be capital intensive. The most expensive item of total variable cost (TVC) was fish feeds which accounted for 61.4% and 67.8% of TVC in Ondo and Ogun States, respectively. There were no significant differences in cost items between the two States. Empirical analysis showed wide variations in predicted TEs across farms ranging from 48.4% to 77.2% in Ondo State and 45.4% to 82.1% in Ogun State with means of 64.0% and 67.0%, respectively. The results also indicate that coefficients of the quantity of feeds, total number of ponds, labour and number of times pond water is changed were positive and highly significant in catfish production. The inefficiency model revealed that age and farming experience coefficients (significant) and education level coefficient (not significant) were negative indicating that older and more experienced farmers tended to be less inefficient. The test of various null hypotheses showed that the inefficiency effects were related to the age, management pattern, years of experience and education level of farmers. The study identified the opportunities that exist for improving TE in the study area. Results of the analysis having implications for the aquaculture industry and for policy-makers were discussed. Close

• 4. [Article] Consumer Concern for Ethical Issues in Fish Farming: A Segmentation Study

  The main objective of this paper was to study consumer concern for ethical and environmental issues regarding fishing and aquaculture. Cross-sectional data was collected in Valencia, Spain. A total sample ...

  Citation × Citation Citation Abstract Copy Title: Consumer Concern for Ethical Issues in Fish Farming: A Segmentation Study Author: Olsen, Svein Ottar, Honkanen, Pirjo The main objective of this paper was to study consumer concern for ethical and environmental issues regarding fishing and aquaculture. Cross-sectional data was collected in Valencia, Spain. A total sample of 452 consumers was obtained. This study uses descriptive and multivariate techniques to present data, and to obtain and describe the segments. The analysis resulted in three segments: the unconcerned, the wild fish concerned and the ambivalent. These represented 27%, 35% and 39% of the sample respectively. The segments were profiled with variables age, gender, education, social class, fish consumption, attitudes towards fish, attitudes towards farmed fish, perceived knowledge about fish farming, health involvement and the type of information used when buying fish (product vs. environmental). Title: Consumer Concern for Ethical Issues in Fish Farming: A Segmentation Study Author: Olsen, Svein Ottar, Honkanen, Pirjo The main objective of this paper was to study consumer concern for ethical and environmental issues regarding fishing and aquaculture. Cross-sectional data was collected in Valencia, Spain. A total sample of 452 consumers was obtained. This study uses descriptive and multivariate techniques to present data, and to obtain and describe the segments. The analysis resulted in three segments: the unconcerned, the wild fish concerned and the ambivalent. These represented 27%, 35% and 39% of the sample respectively. The segments were profiled with variables age, gender, education, social class, fish consumption, attitudes towards fish, attitudes towards farmed fish, perceived knowledge about fish farming, health involvement and the type of information used when buying fish (product vs. environmental). Close

• 5. [Article] Budgeting Analysis of Catfish Marketing in Ondo State, Nigeria

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  Citation × Citation Citation Abstract Copy Title: Budgeting Analysis of Catfish Marketing in Ondo State, Nigeria Author: Olumide, Oseni Joseph No poster available. Title: Budgeting Analysis of Catfish Marketing in Ondo State, Nigeria Author: Olumide, Oseni Joseph No poster available. Close

• 6. [Article] Technical Efficiency of Urban Fish Farming in Oyo State-Nigeria

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Technical Efficiency of Urban Fish Farming in Oyo State-Nigeria Author: Olajide, Ajao, Olusola, Ogunjimi Abstract only. Title: Technical Efficiency of Urban Fish Farming in Oyo State-Nigeria Author: Olajide, Ajao, Olusola, Ogunjimi Abstract only. Close

• 7. [Article] Determinants of Land Leasing Decisions for Shrimp Farming: A Case Study of Smallholders' Shrimp Farming In India

  Using primary data collected from 208 shrimp farming households and 69 households leasing-out land for shrimp farming, this paper explores the demographic and economic factors influencing the land leasing ...

  Citation × Citation Citation Abstract Copy Title: Determinants of Land Leasing Decisions for Shrimp Farming: A Case Study of Smallholders' Shrimp Farming In India Author: Bhattacharya, Poulomi Using primary data collected from 208 shrimp farming households and 69 households leasing-out land for shrimp farming, this paper explores the demographic and economic factors influencing the land leasing decisions for traditional and scientific shrimp farming in West Bengal, India, applying Tobit Model. The results indicate that size of households‟ land holding is positively related with the extent of land leased-in for traditional shrimp farming whereas for scientific shrimp farming the association was found to be negative. This signifies that land leasing market does not facilitate the households having lesser landholding to lease-in land for shrimp culture in the case of traditional shrimp farming whereas in the case of scientific shrimp farming it does facilitate such households. In the case of traditional shrimp farming households‟ association with other fisheries related activities was also found to have positive influence on their leasing-in decisions . On the supply side, variables like number of adult male members, households‟ association with fisheries related activities and non-farm assets were found to have positive, negative and positive association respectively with the extent of land leased-out for traditional shrimp farming. The analysis also exhibits that the age of the household head has negative relationship with the extent of land leased-out by them both in the case of traditional and scientific shrimp farming. This signifies that existing institutional arrangements in shrimp farming of West Bengal are not considerably successful to motivate young rural people to undertake shrimp farming on their own instead of leasing-out land for shrimp culture and aquaculture policies should address this aspect. Title: Determinants of Land Leasing Decisions for Shrimp Farming: A Case Study of Smallholders' Shrimp Farming In India Author: Bhattacharya, Poulomi Using primary data collected from 208 shrimp farming households and 69 households leasing-out land for shrimp farming, this paper explores the demographic and economic factors influencing the land leasing decisions for traditional and scientific shrimp farming in West Bengal, India, applying Tobit Model. The results indicate that size of households‟ land holding is positively related with the extent of land leased-in for traditional shrimp farming whereas for scientific shrimp farming the association was found to be negative. This signifies that land leasing market does not facilitate the households having lesser landholding to lease-in land for shrimp culture in the case of traditional shrimp farming whereas in the case of scientific shrimp farming it does facilitate such households. In the case of traditional shrimp farming households‟ association with other fisheries related activities was also found to have positive influence on their leasing-in decisions . On the supply side, variables like number of adult male members, households‟ association with fisheries related activities and non-farm assets were found to have positive, negative and positive association respectively with the extent of land leased-out for traditional shrimp farming. The analysis also exhibits that the age of the household head has negative relationship with the extent of land leased-out by them both in the case of traditional and scientific shrimp farming. This signifies that existing institutional arrangements in shrimp farming of West Bengal are not considerably successful to motivate young rural people to undertake shrimp farming on their own instead of leasing-out land for shrimp culture and aquaculture policies should address this aspect. Close

• 8. [Article] Economic Analysis of Fish Farming in Osun State, South-Western Nigeria

  Information on economic viability of aquaculture is crucial for investors when assessing the feasibility of an aquaculture investment. Unfortunately, such information has been scarce in Nigeria. The economic ...

  Citation × Citation Citation Abstract Copy Title: Economic Analysis of Fish Farming in Osun State, South-Western Nigeria Author: Olasunkanmi, John Bunmi Information on economic viability of aquaculture is crucial for investors when assessing the feasibility of an aquaculture investment. Unfortunately, such information has been scarce in Nigeria. The economic analysis of fish farming in Osun State, South-Western Nigeria was therefore carried out using data collected from seventy two randomly selected fish farms. Data were analyzed using descriptive statistics, costs and returns, as well as multiple regression analysis. The relationship between fish output and five inputs: feed, fertilizer, lime, labour and fingerlings were measured using Cobb-Douglass production model. Results suggest that a unit increase in fertilizer application contributed 46 percent increase to the profitability of the fish farms and this was significant at p<0.01. Also, labour was significant at p<0.05 as the results suggest that a unit increase in labour contributed 60 per cent increase to the profitability of the fish farms. The model explained 81% of the variation in total output. On the whole, fish farming was found to be profitable with a benefit-cost ratio of 1.65 and profit–cost ratio of 0.65. It is recommended that fish farmers in the study area should increase their use of feed, lime and fingerlings and decrease their use of fertilizer and labour. Data on the socio-economic characteristics of farmers revealed that most fish farmers (58.3%) in the State were males, aged between 31-50 years old. About 91.7% of fish farmers were married and 95.8% had formal education. About 86.1% owned land either by inheritance or purchase, 8.3% operated on leased land and 5.6% rented the land upon which they operated. About 75% of the respondents got their capital from personal savings, 11.1% from cooperatives, and only 5.6% had access to bank loans. About 52.8% were regularly visited by extension agents 16.7% were occasionally Title: Economic Analysis of Fish Farming in Osun State, South-Western Nigeria Author: Olasunkanmi, John Bunmi Information on economic viability of aquaculture is crucial for investors when assessing the feasibility of an aquaculture investment. Unfortunately, such information has been scarce in Nigeria. The economic analysis of fish farming in Osun State, South-Western Nigeria was therefore carried out using data collected from seventy two randomly selected fish farms. Data were analyzed using descriptive statistics, costs and returns, as well as multiple regression analysis. The relationship between fish output and five inputs: feed, fertilizer, lime, labour and fingerlings were measured using Cobb-Douglass production model. Results suggest that a unit increase in fertilizer application contributed 46 percent increase to the profitability of the fish farms and this was significant at p<0.01. Also, labour was significant at p<0.05 as the results suggest that a unit increase in labour contributed 60 per cent increase to the profitability of the fish farms. The model explained 81% of the variation in total output. On the whole, fish farming was found to be profitable with a benefit-cost ratio of 1.65 and profit–cost ratio of 0.65. It is recommended that fish farmers in the study area should increase their use of feed, lime and fingerlings and decrease their use of fertilizer and labour. Data on the socio-economic characteristics of farmers revealed that most fish farmers (58.3%) in the State were males, aged between 31-50 years old. About 91.7% of fish farmers were married and 95.8% had formal education. About 86.1% owned land either by inheritance or purchase, 8.3% operated on leased land and 5.6% rented the land upon which they operated. About 75% of the respondents got their capital from personal savings, 11.1% from cooperatives, and only 5.6% had access to bank loans. About 52.8% were regularly visited by extension agents 16.7% were occasionally Close

• 9. [Article] Comparative Analysis of Fresh and Dried Fish Consumption in Rural and Urban Households in Ondo State, Nigeria

  A sine-qua-non for eradicating protein malnutrition in Nigeria is increased ingestion of high-value proteins found in various fish forms. This study attempted to give empirical backing or refutation to ...

  Citation × Citation Citation Abstract Copy Title: Comparative Analysis of Fresh and Dried Fish Consumption in Rural and Urban Households in Ondo State, Nigeria Author: Mafimisebi, Taiwo Ejiola A sine-qua-non for eradicating protein malnutrition in Nigeria is increased ingestion of high-value proteins found in various fish forms. This study attempted to give empirical backing or refutation to the assertion that dried fish is consumed more than fresh fish in Nigeria. Data used were gathered in 90 rural and urban households selected through multi-stage sampling technique. Analytical tools used included descriptive, Z-test and Chi-square statistics and regression model. Empirical results revealed mean household size of 7 in both households while average annual income was N471,200.04 ($2,908.6) and N326,466.58 ($2015.2) in urban and rural households, respectively. The average quantity of fresh and dried fish consumed per household per year was 13.0kg and 47.0kg in urban, and 11.5kg and 38.0kg in rural households, respectively. There was no significant difference in the consumption of the dried (1.779, p > 0.10,) and fresh (1.904, p > 0.10) fish forms in both households. OLS regression result revealed that household head’s age and numbers of children below 15 years were not significant in influencing consumption (p> 0.10). Contrariwise, household size and fish price significantly negatively influenced quantity of fish consumed while household income exhibited significant positive effect on consumption. The education variable, which was not significant in dried fish consumption, had significant positive influence on fresh fish consumption. However, 50.0% and 27.0% of the respondents rated affordability and accessibility as the main hindrances to consumption. Policy options directed at tackling the high cost of fresh fish to achieve reduced price and increased consumption, were recommended. Title: Comparative Analysis of Fresh and Dried Fish Consumption in Rural and Urban Households in Ondo State, Nigeria Author: Mafimisebi, Taiwo Ejiola A sine-qua-non for eradicating protein malnutrition in Nigeria is increased ingestion of high-value proteins found in various fish forms. This study attempted to give empirical backing or refutation to the assertion that dried fish is consumed more than fresh fish in Nigeria. Data used were gathered in 90 rural and urban households selected through multi-stage sampling technique. Analytical tools used included descriptive, Z-test and Chi-square statistics and regression model. Empirical results revealed mean household size of 7 in both households while average annual income was N471,200.04 ($2,908.6) and N326,466.58 ($2015.2) in urban and rural households, respectively. The average quantity of fresh and dried fish consumed per household per year was 13.0kg and 47.0kg in urban, and 11.5kg and 38.0kg in rural households, respectively. There was no significant difference in the consumption of the dried (1.779, p > 0.10,) and fresh (1.904, p > 0.10) fish forms in both households. OLS regression result revealed that household head’s age and numbers of children below 15 years were not significant in influencing consumption (p> 0.10). Contrariwise, household size and fish price significantly negatively influenced quantity of fish consumed while household income exhibited significant positive effect on consumption. The education variable, which was not significant in dried fish consumption, had significant positive influence on fresh fish consumption. However, 50.0% and 27.0% of the respondents rated affordability and accessibility as the main hindrances to consumption. Policy options directed at tackling the high cost of fresh fish to achieve reduced price and increased consumption, were recommended. Close