This was on Wikipedia recently, and is of direct relevance to Goa. See
the full text at the URL below. FN

http://en.wikipedia.org/wiki/Shrimp_farm
Shrimp farm
>From Wikipedia, the free encyclopedia.

        This article is about the farming of marine (saltwater) shrimps.
        For farming of fresh water species, see freshwater prawn
        farming.

Shrimp growout pond on a farm in South Korea.

A shrimp farm is an aquaculture business for the cultivation of marine
shrimp or prawns1 for human consumption. Commercial shrimp farming began
in the 1970s, and production grew steeply, particularly to match the
market demands of the USA, Japan and Western Europe. The total global
production of farmed shrimp reached more than 1.6 million tonnes in
2003, representing a value of nearly 9 billion U.S. dollars. About 75%
of farmed shrimp is produced in Asia, in particular in China and
Thailand. The other 25% is produced mainly in Latin America, where
Brazil is the largest producer. The largest exporting nation is
Thailand.

Shrimp farming has changed from traditional, small-scale businesses in
Southeast Asia into a global industry. Technological advances have led
to growing shrimps at ever higher densities, and broodstock is shipped
world-wide. Virtually all farmed shrimp are penaeids (i.e., shrimps of
family Penaeidae), and just two species of shrimp—the Pacific White
Shrimp and the Giant Tiger Prawn—account for roughly 80% of all farmed
shrimp. These industrial monocultures are very susceptible to diseases,
which have caused several regional wipe-outs of farm shrimp populations.
Increasing ecological problems, repeated disease outbreaks, and pressure
and criticism from both NGOs and consumer countries led to changes in
the industry in the late 1990s and generally stronger regulation by
governments. In 1999, a program aimed at developing and promoting more
sustainable farming practices was initiated, including governmental
bodies, industry representatives, and environmental organizations....




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