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| Fofana, Abdulai; Jaffry, Shabbar. |
| This paper presents an investigation into the market structure for three product types of salmon (smoked, fresh and whole salmon) in the UK retail market. Evidence of the potential for market power and pricing conduct is analysed using structural simultaneous system equations based on the Bresnahan (1982) model. The importance of the retail market is recognised given the dominance of supermarket chains which accounted for £1.6 billion sales of seafood and the share of about 87% of all seafood retail sales in 2004 as compared with only 16% in 1988. The results indicate that the system is well represented by the models and that the market is competitive for fresh fillets and whole salmon but retailers exert some market power for smoked salmon. The hypothesis... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Market power; Error correction model; Dynamic demand systems; Salmon; Marketing; JEL-1; JEL-J. |
| Ano: 2006 |
URL: http://purl.umn.edu/45873 |
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| Fofana, Abdulai. |
| In this paper Occupational Alternative Ratios (OAR) are applied to the 2003 employment survey data from Shetland to measure dependency on whitefish in individual communities as an alternative to traditional measures of fishing dependency, such as fishing employment and fisheries contribution to Gross Domestic Product (GDP). The OAR measure summarises the potential impact that the size of the whitefish industry has upon the supply of labour for alternative occupations within the local economy. The results of the model indicate that Whalsay is the most whitefish dependent community, followed by Scalloway and Skerries while the least whitefish dependent community is West Mainland. The OAR indices depict a clear distinction between the most and least dependent... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Labor and Human Capital; Livestock Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/45997 |
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| Fofana, Abdulai; Jaffry, Shabbar. |
| A significant increase of concentration in the UK salmon retail subsector has heightened concerns about retail firms’ ability to exercise market power in the purchase of supplies (oligopsony power). To assess the extent to which retail firms have exercised oligopsony power, we develop a dynamic error correction translog profit function to model the behaviour of retailers in the input market for smoke, fillet and whole salmon. Initial estimates indicated violations of monotonicity and convexity conditions as implied by economic theory. In order to ameliorate the problem, a Bayesian technique was used to impose inequality restrictions to correct the anomaly. The final estimated indices of market power in the models were low and statistically significant but... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Salmon; Market power; Error correction model; Translog profit function; Food Security and Poverty; JEL-I; JEL-J. |
| Ano: 2008 |
URL: http://purl.umn.edu/61116 |
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