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The article Catfish Farmers Fight Fish Glut and High Fee Prices centered on the left shift in demand for catfish. There has been a steady decline in the demand for catfish in the last decade, causing its demand curve to keep shifting left. Last year, the supply of catfish was low which in turn led to higher prices (due to its scarcity). These higher prices led people to substitute (determinant of demand) catfish with other goods such as inexpensive imports or similar species of fish. The catfish industry has not been able to recover. This year (2012) the supply of catfish has managed to surpass the demand. The high supply led to cheaper catfish costs this year, which in theory should have led to more demand, however people seem to be sticking with their substitutes despite the price change. The feed prices for catfish (feed being a factor of production) are at an all-time high which is causing farmers to suffer; with high costs of production and low prices, they are receiving little profit. With the whole industry suffering, the government has decided to purchase 10 million dollars' worth of catfish hoping to act as a positive determinant of demand (trying to shift the demand curve to the right). This has not had a great effect on the catfish industry and people are starting to question its value; whether people are willing to buy catfish. The declining of this industry has already led to many catfish ponds being replaced with new crops.

This article was about the decrease in demand for catfish due to substitution and a change in taste and preferences by consumers. This has caused the demand curve to shift to the left. Because it has shifted left, the price of catfish has decreased therefore signaling that catfish is not as scarce as it used to be and its value has decreased. How have consumer incentives been impacted by this? Because the price has decreased and the good has become less valuable, people would be more inclined to buy it due to the lowered price. How would producers be impacted by this? As demand has decreased the price has decreased, and the lower the price the lower the quantities of goods firms are willing to supply. Therefore the supply of catfish will decrease. This demand shift will have a negative effect on substitute markets as consumers may find the price of catfish cheaper which may lead them to switch from their product to catfish. Lastly, how will this impact resource allocation? As there is a decrease of demand, therefore a decrease in supply, less resources will be used for the catfish industry and invested in other more profitable markets.

This article is acquainting us with China's plan to increase its supply of meat. Today, consumers in China are eating ten percent more meat than they did five years ago, so demand is increasing. However, the supply is lagging behind. Thus, Chinese officials have decided to buy millions of U.S. livestock and import it into China. This is a good example of how government intervention affects supply. By importing the U.S. livestock the cost of producing meat in China will be much less, whereas the quality will be much higher. However, critics from the U.S. are skeptic of this ordeal, as the cost of meat production is rising in the U.S. So the livestock exports to China would be increasing supply in China but they might decrease supply in the U.S. and lead to a future loss of a key U.S. export. 

Evidently, the reason for China's attempt to increase its supply of meat, is that there is an increase in the demand of meat. This means that meat has become scarcer. From a consumer perspective, the incentive now is to ration the amount of meat that is being consumed. Another consumer incentive might be to switch the consumption of meat with the consumption of a substitute good such as fish. From a producer perspective, an incentive is to produce more because the price is higher now. Therefore a producer is able to make a greater profit from the production of meat. There will also be a greater allocation of resources into the production of meat, as it is a more lucrative business.