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The laboratory was expanded in the 1970s and 1980s to investigate serious disease risks threatening the expanding fish farming industry. During the 1980s research shifted towards determining drug residues in fish for human consumption and environmental problems associated with release of medicines from fish farms. [5]
The main species of fish farmed in Canada is led by salmon with 70.5% of all fish in aquaculture followed by mussels with 15.1%. Aquaculture makes a significant contribution to Canada's economy totaling $2.1 billion in revenue and jobs in Canada in 2009.
Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture , which is the controlled cultivation and harvesting of aquatic animals such as fish, crustaceans , molluscs and so on, in natural or pseudo-natural environments.
The aquaculture or farming of piscivorous fish, like salmon, does not help the problem because they need to eat products from other fish, such as fish meal and fish oil. Studies have shown that salmon farming has major negative impacts on wild salmon, as well as the forage fish that need to be caught to feed them.
Up until 2007, Chile experienced over 15 years of important growth in its salmon aquaculture, becoming the second largest salmon and trout producer after Norway. [1] [2] By 2006 Chile contributed with 38% of the world's salmon volume just behind Norway that produced 39% of it. [1]
Raising fish in cages in a lake in a relatively undeveloped environment. Urban aquaculture employs water-based systems, the most common, which mostly use cages and pens; land-based systems, which make use of ponds, tanks and raceways; recirculating systems are usually high control enclosed systems, [clarification needed] whereas irrigation is used for livestock fish.
A complex and labor-intensive form of farming, octopus aquaculture is being driven by strong market demand in the Mediterranean and in South American and Asian countries. [1] Annual global demand for octopus more than doubled from 1980 to 2019, from roughly 180,000 to about 370,000 tons. [ 2 ]
Aquaculture is the most rapidly expanding food industry in the world [7] as a result of declining wild fisheries stocks and profitable business. [2] In 2008, aquaculture provided 45.7% of the fish produced globally for human consumption; increasing at a mean rate of 6.6% a year since 1970.