Aquaculture - Aqua c ultur e A q u a c u lt u r e 1 W o r...

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10/30/13 Aquaculture animalscience2.ucdavis.edu/ans1/handouts/aquaculture.html 1/3 Aquaculture 1) World Aquaculture Data (United Nations Food and Agriculture Statistics - ( FAO ) The State of World Fisheries and Aquaculture - A report from the Food and Agriculture Organization of the United Nations (it may take a while to download at over 6 MB) a) Species considered under aquaculture: Diadromous Fish – fish that migrate between fresh and salt water; sturgeon, eel, trout, salmon Demersal Fish – fish that live on or near the sea bottom; flounder, cod, shark Pelagic Fish – fish that live in the middle or surface of the sea; herring, tuna, mackerel Crustaceans – crabs, lobster, krill, shrimp Molluscs – bilaterally symmetrical invertebrates, calcium shell, muscular foot and gills; abalone, oyster, mussels, scallops, clams Cephalopods – within mollusca, well developed head with prehensile tentacles; squid, octopus, cuttlefish b) Other Production: In world - total world fish production = 101 million metric tons (this includes aquaculture and catch of 'wild' fish); consumption of 'cultured' or 'farmed' fish is approx 16.5 million metric tons (one-quarter of salmon and shrimp produced are ‘farmed’) Trends - world aquaculture production is increasing by 8% per year; world 'catch' is increasing 1% per year In US - 340,000 metric tons grown last year; most widely raised fish is Channel Catfish in Southeast (Mississippi, Arkansas, Alabama,Louisiana). In US there are 1,320 catfish farms with 177,360 acres of ponds. Live catfish production 447 million pounds c) Rough production data: In extensive systems of aquaculture (low input systems) one typically produces 300 to 500 kg of fish per hectare of pond surface per year (1 acre = .4047 hectares); with more intensive production this can be raised into 1000 kg /hectare/yr and way up into 10,000 kg per hectare for very intensive production; in tank aquaculture with oxygen added to tanks, ultra filtration of water one could attempt to produce 2,000,000 kg per hectare per year but such production is not sustainable in large systems.
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