The parameters investigated were the following:
1.Size of the product in its retail form
2.Price of the product in its retail form
3.Ecological label on the product
The second survey was a fish consumption survey. As a part of this survey, the preferences of about 23 participants were recorded and analyzed for consumption trends. While the first study provides an insight into the pricing trends of various fish-based products in the market, the second study provides a comprehensive picture of the consumption trends in various products. By comparing the cost-demand indices in both the surveys, the issues of overfishing, overpricing and bycatch can be addressed.
In the simulation, a fishing pond was simulated, by means of floating beads to represent different species as follows:
1.Yellow beads to represent tuna
2.Blue glass beads to represent dolphin
3.Multi-colored plastic beads to represent bycatch.
For the purpose of the simulation, the size of one scoop was set to be 20. Thus, each scoop generated at random refers to a random number for each species.
1.Number of tuna: 200
2.Number of dolphins: 40
3.Number of bycatch species: 100
One important limitation of the study is that it cannot account for the entire demographic of fish-consumers. The greater the number of participants in the survey, the more accurate the representativeness of the population being studied.
The second important limitation is that the trends in bycatch have to be simulated within the experimental conditions. Factors such as clustering and/ or relative sizes and swimming patterns may have resulted in a degree of divergence from the actual fishing behavior.
The results of the survey are as follows:
The following plots show the pricing trends of various fish-based products studies (canned tuna, fresh tuna and sushi). The bubble plots help in illustrating the median values of the prices of the products, making them more accurate as a measure of central tendency, since the mean is less significant for a limited number of observations: