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Examining techno-economic interactions among fish species:A case of small-scale demersal fishery

Aquaculture and Fisheries 2024年第4期9卷 682-695页

作者： Jaynab Begum Yousuf shekar bose Humanities Research Centre Sultan Qaboos UniversityP.O Box 34Muscat123Oman Sultan Qaboos University Al KhoudMuscat123Oman Queen Street Brisbane CityQueensland4000Australia

Using the multi-product dual revenue function framework,this paper examines the nature and extent of technical and economic interactions among five demersal species of Al-Batinah demersal fishery,Oman during the 2010-2016 *** parameters of the system of output supply functions are estimated using Zellner’s seemingly unrelated regressions(SUR)*** likelihood ratio test in relation to the structure of the multi-output production technology rejects the null-hypothesis of input-output separability and non-jointness in *** results suggest that the underlying production technology is non-separable between the outputs and the quasi-fixed input,and the harvesting level of one species is likely to have spill-over economic effects on the harvesting levels of *** own-price elasticities of output supply are found to be positive,inelastic,and statistically significant in four out of five cases suggesting that,other things being equal,fishers’supply decisions are influenced by the prevailing market prices of *** estimated values of the cross-price elasticity of supply are negative,inelastic and statistically significant at the 5%level for eight output *** calculated values of the Morishima elasticity of substitution(MES)indicate the presence of substitutability between ten output *** cross-price elasticity estimates are in the range of􀀀0.001(between Emperor and Catfish)to􀀀0.275(between Seabream and Grouper)which is lower(in absolute value)than that of the MES *** magnitudes of the cross-price elasticity and the MES estimates indicate the extent of spill-over effects of one species on the other and signal the extent of species targeting by fishers.A statistically significant spatial,seasonal,and inter-annual variability is observed in all species ***,the implications of the findings are discussed from the perspective of developing effective management approaches,achieving sustainability of fisheries resource

关键词： Multi-product technology Separability Non-jointness Supply responses Targeting Small-scale fisheries Oman

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Stakeholders’ Views on Management Arrangements: A Case of Kingfish Fishery in the Sultanate of Oman

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Natural Resources 2016年第5期7卷 251-264页

作者： Abdullah Hilal Al-Balushi shekar bose Anesh Govender Oman Animal and Plant Genetic Resources Center The Research Council Muscat Oman Department of Natural Resource Economics College of Agricultural and Marine Sciences Sultan Qaboos University Muscat Oman Department of Marine Science and Fisheries College of Agricultural and Marine Sciences Sultan Qaboos University Muscat Oman

This paper exemplifies a primary step towards eliciting primary and secondary stakeholders’ views on management issues pertaining to kingfish fishery in Oman, and potential options for effective management of the fishery using questionnaire surveys and focus group interviews. There was consensus from stakeholder groups which included fishers, fishery managers, and fishery scientists that the current stock condition is not biologically sustainable. It is found that fishing effort control and technical measures are preferred to catch control by both groups. The role of mass media and the traditional institution in communicating fisheries issues are found to be relatively minor. Although the overall rating on the comprehensiveness of the proposed plan is promising, there are significant differences between the two groups with regard to legislative arrangements (χ2 = 24.793, p-value = 0.000), management goals (χ2 = 16.206, p-value = 0.001), operational objectives (χ2 = 19.884, p-value = 0.000), performance indicators (χ2 = 15.524, p-value = 0.001), and measures (χ2 = 13.483, p-value = 0.004). Policy implications of the key findings are discussed in both national and regional contexts. Management authorities can use these findings to design an appropriate plan of actions for achieving sustainability in this fishery.

关键词： Sustainability Kingfish Fishery Stakeholder Views Management Arrangements Oman

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