Technical efficiency of small-scale fishing households in Tanzanian coastal villages: an empirical analysis

Sesabo, Jennifer; Tol, Richard S.J.

doi:10.2989/ajas.2007.32.1.8.145

Cited by 28 publications

(39 citation statements)

References 45 publications

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“…Thus, fishers using non‐motorized boats tend to be less efficient than those with motorized boats, mainly because fishers using non‐motorized boats cannot sail for long distances and increase their Nile perch catch, thereby constraining fishers to fish at optimum points. Sesabo and Tol () also found that fishers travelling long distances to access fishing grounds tend to be more efficient than their counterparts. This observation is consistent with the study of Mome and Arnason (), indicating the harvesting efficiency of non‐motorized boats was about half that of the motorized boats, the latter reducing the sailing time to reach fishing grounds and obtain big fish catches.…”

Section: Resultsmentioning

confidence: 97%

“…The measure of return to scale (RTS) represents the percentage change in output attributable to a proportional change in the use of all inputs, which is estimated as the sum of the output elasticities for all inputs. Thus, if RTS > 1, RTS = 1 or RTS < 1, one has increasing, constant or decreasing returns to scale, respectively (Ehiakpor et al, ; Sesabo & Tol, ). Following the approach of Sesabo and Tol, (), Hamidi () and Ehiakpor et al (), the specification of the input elasticity is presented as follows:

e_{j} = \frac{\partial ln (y_{i})}{\partial ln (x_{ji})} = β_{j} + \sum_{j = 1}^{j = 6} β_{italicjh} ln x_{j} + β_{italicjt} = β_{j}

…”

Section: Methodsmentioning

confidence: 99%

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Analysis of the technical efficiency of Nile perch (Lates niloticus) fishers in the Tanzanian portion of Lake Victoria: A stochastic frontier analysis

Mkuna

Baiyegunhi

2019

Lakes & Reservoirs

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The Nile perch fishery sector in Tanzania is important for enhancing the livelihoods and food security for the majority of people living near the Tanzanian portion of Lake Victoria. Despite continued government efforts and other institutions, including the Food and Agriculture Organization (FAO), Lake Victoria Fisheries Organization (LVFO), European Union and World Bank regarding the management of Lake Victoria, the Nile perch fishers have remained relative inefficient in regard to improving their fish catches. The Nile perch small‐scale fisheries sector in particular faces a challenge regarding how to improve production performance while, at the same time, ensuring a sustainable level of fisheries resources. This reality necessitates the measurement and analysis of artisan fishers’ technical efficiency. Accordingly, the present study analyses Nile perch fishers technical efficiency, using a stochastic production frontier (SPF) model based on the sample of 268 Nile perch fishers in the Tanzanian portion of Lake Victoria. The translog stochastic frontier model results indicate the technical efficiency of Nile perch fishers range between 61% and 80%, with an overall average technical efficiency of 75%. This finding implies that, based on existing fishery resources, the current quantity of Nile perch catch can be improved efficiently by 25%, a reality highlighting mismanagement of the lake's fishery resources. The quantity of bait and petrol and the number of hooks used per trip are the most important fishing inputs, indicating a positive Nile perch fishing output–input elasticity. To address the Nile perch fisher inefficiency, it is important to provide subsidized inputs such as outboard engines and mesh gillnets. Provision of access to affordable credits will enable fishers to purchase less destructive fishing inputs and improve the current structure of fishery organizations.

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Section: Resultsmentioning

confidence: 97%

e_{j} = \frac{\partial ln (y_{i})}{\partial ln (x_{ji})} = β_{j} + \sum_{j = 1}^{j = 6} β_{italicjh} ln x_{j} + β_{italicjt} = β_{j}

…”

Section: Methodsmentioning

confidence: 99%

Analysis of the technical efficiency of Nile perch (Lates niloticus) fishers in the Tanzanian portion of Lake Victoria: A stochastic frontier analysis

Mkuna

Baiyegunhi

2019

Lakes & Reservoirs

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“…Econometric results often lend support to a translog specification, with unrestricted elasticity parameters of substitution between inputs (and between outputs in multi-species fisheries), as opposed to nested specifications (e.g. see Basch et al, 2003 andSesabo andTol, 2007).…”

Section: Resultsmentioning

confidence: 99%

“…In turn, an aggregate value of a multi-species catch as output measure (as used by some studies based on stochastic frontier models, e.g. Sesabo and Tol, 2007) does not allow a distinction between allocative and technical efficiency, unless dual functions (including costs) are used. Since most fishing gear is not highly species-selective and price expectations are often inaccurate, both biases should partly level out if sufficient time and vessel aggregation is used (e.g.…”

Section: Revisions and Empirical Problemsmentioning

confidence: 99%

“…This would be aimed at estimating cross-vessel technical efficiency and capacity utilisation while accounting for incidental truncation in the observed fishing fleet. Applications of stochastic frontier modelling to fish-harvesting are reviewed by Basch et al (2003), Pascoe and Mardle (2003), and Sesabo and Tol (2007). Fishery indicators are explicitly used as explanatory variables for production and efficiency, and latent-class regression is used to account for heterogeneous technology within a fishery.…”

Section: Appendix a Possible Extension And Limits Of The Analysismentioning

confidence: 99%

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A surplus production model with latent truncation and species targeting, with an application to Papua New Guinean fisheries

Mainardi¹

2009

Fisheries Research

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On the productivity and technical efficiency of the Puerto Rican queen conch Aliger gigas fishery

Agar,

Solís

2024

Mar Coast Fish

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ObjectiveThis study examines the productivity and technical efficiency (TE) of diving operations that target queen conches Aliger gigas in the Commonwealth of Puerto Rico, the largest producer of queen conches in the United States. Currently, there is a proposal to list queen conch as threatened under the Endangered Species Act (ESA).MethodsWe use stochastic production frontier methods to investigate the relationship between catch and fishing inputs and the technical performance of diving operations.ResultOur results show that the fleet could increase its catches, on average, by 30% (and, thus, increase its income) by using existing fishing inputs and technology more efficiently. We find that the potential to expand catches was slightly higher from increasing the crew size than from extending the length of the fishing trip. The study also finds considerable heterogeneity across coastal regions and operation sizes. Overall, operations on the east and west coasts and those having three or more crew members were more efficient. Operations that use a single gear and specialize on few species (revenue concentration) were associated with higher levels of TE. We also find that diving operations exhibit decreasing returns to scale.ConclusionThe potential ESA listing of the queen conch poses a dilemma because increasing the efficiency of the fleet may continue to compromise the sustainability of the resource. While a threatened designation does not necessarily result in additional trade or harvest restrictions, further actions may be advisable given the many threats, such as overutilization, habitat loss, coastal pollution, and disruptive environmental change that queen conch populations face. Our model suggests that reducing the size of the crew and/or the length of the trip may increase efficiency, but these restrictions may not be advisable on safety grounds. Thus, management agencies may want to reassess existing trip limits and the length of the closed season and explore the use of closed areas.

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Technical efficiency of small-scale fishing households in Tanzanian coastal villages: an empirical analysis

Cited by 28 publications

References 45 publications

Analysis of the technical efficiency of Nile perch (Lates niloticus) fishers in the Tanzanian portion of Lake Victoria: A stochastic frontier analysis

Analysis of the technical efficiency of Nile perch (Lates niloticus) fishers in the Tanzanian portion of Lake Victoria: A stochastic frontier analysis

A surplus production model with latent truncation and species targeting, with an application to Papua New Guinean fisheries

On the productivity and technical efficiency of the Puerto Rican queen conch Aliger gigas fishery

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