Demand elasticities for farmed salmon in world trade

A Demand Analysis for Crustaceans at the U.S. Retail Store Level

“…For shrimp and crab, price, expenditure and promotion intensities are sufficient to explain majority of variations of the market shares. For crawfish and lobster, price, income and promotion only explain about 40% of variations of the market shares; other factors, such as demographics as discussed in Pollak and Wales (1981), seasonality and time trend as in Xie et al (2009), may play a role in the variation of crawfish and lobster market shares.…”

“…In addition, following the adding-up condition for advertising response (Basmann, 1956;Kinnucan et al, 1997;Xie et al, 2009) and homogeneity condition for advertising (Selvanathan, 1989;Kinnucan et al, 1997), restrictions on promotion parameters in Equation (3) are: X n j¼1 p ij ¼ 0 ðAdding À upÞ; and X n i¼1 p ij ¼ 0 ðHomogeneityÞ:…”

“…The test rejects the price homogeneity hypothesis and price symmetry hypothesis, but fails to reject the promotion homogeneity hypothesis. The rejection of the theoretical restrictions in empirical demand studies may be due to errors in functional forms, data aggregation, or dynamic nature of consumer behavior that a static AIDS model does not capture (Anderson & Blundell, 1983), and are common, rather than the exception as found in previous seafood demand studies (Barten and Bettendorf, 1989;Eales et al, 1997;Park et al, 2004;Xie et al, 2008Xie et al, , 2009Xie & Myrland, 2011;Thong, 2012). This study follows common practices of previous studies by imposing theoretical restrictions on the empirical estimation of the demand system, and compares the effects of restrictions on the estimates between the restricted and unrestricted models.…”

Disentangling supply and demand shifts: the impacts on world salmon price

“…Kinnucan et al, 1997). This approach is commonly applied in empirical work on salmon demand (Bjørndal et al 1992;Asche 1996;Xie et al 2009;Xie and Myrland 2011). In this article, I adopt a parsimonious approach to measuring demand shifts; yearly changes in price and quantities are decomposed between regional supply and demand shifts, and the relative impact from each supply and demand shift on price is determined.…”

“…3 Demand elasticities vary between -0.2 and -1.7, with mean and median around -0.75 (Fousekis and Revell 2004;Davis et al 2007;Hong and Duc 2009;Sakai et al 2009;Xie et al 2009;Tiffin and Arnoult 2010;Asheim et al 2011;Muhammad and Jones 2011;Xie and Myrland 2011;Chidmi et al 2012;Singh et al 2012;Jones et al 2013). The values vary by product form, period length, income level and market location.…”