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article imageAquaculture Industry Will Continue to Grow

By Bob Ewing     Jan 3, 2009 in Business
Aquaculture production of seafood will probably remain the most rapidly increasing food production system worldwide through 2025.
The food production system that is likely to be the fastest growing is aquaculture, at least until 2025. This is the assessment made by James S. Diana of the University of Michigan at Ann Arbor, and published in the January 2009 issue of BioScience.
The assessmentt states despite well-publicized concerns about some harmful effects of aquaculture, the technique may, when practiced well, be no more damaging to biodiversity than other food production systems. It may also be the only way to supply growing demand for seafood as the human population expands.
The total production from capture fisheries has remained approximately constant for the past 20 years and may decline. However, aquaculture has increased by 8.8 percent per year since 1985 and now accounts for about one-third of all aquatic harvest by weight.
Finfish, mollusks, and crustaceans dominate aquaculture production; seafood exports generate more money for developing countries than meat, coffee, tea, bananas, and rice combined.
Among the most potentially harmful effects of aquaculture, are the escape of farmed species that then become invasive, pollution of local waters by effluent, especially from freshwater systems, and land-use change associated with shrimp aquaculture in particular.
Increased demand for fish products for use in feed and transmission of disease from captive to wild stocks are also hazards.
When aquacultue is carefully implemented, it can reduce pressure on overexploited wild stocks, enhance depleted stocks, and boost natural production of fishes as well as species diversity.
Some harmful effects have diminished as management techniques have improved, and aquaculture has the potential to provide much-needed employment in developing countries.
There is a need for thorough life-cycle analyses to compare aquaculture with other food production systems. Such analyses are, however, only now being undertaken, and more comprehensive information is needed to guide the growth of this technique in sustainable ways.
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