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AquaCulture

AquaCulture

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AquaCulture

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  1. AquaCulture From the World Wildlife Fund

  2. Fish, shrimp and shellfish are farmed

  3. Fish farms compete for space: example shrimp farms in Madagascar occupy habitat in mangrove swamps

  4. Pollution from open net cages • The waste waters can contain: • Chemicals • Pharmaceuticals • Fish faeces • Unused fish feed • These can be toxic to the wild aquatic species

  5. Could aquaculture cause antibiotic resistance?

  6. Exotic escapees compete for food and habitat and compete with wild species Wild salmon are now outnumbered by escaped farmed salmon in Norway

  7. Example: 300,000 farmed salmon were lost when 12 cages broke in Shetland!

  8. Spread of disease to wild marine species Sea lice from farmed salmon can infect wild fish Wild fish can also be exposed to viruses and other diseases from fish farms

  9. Wild Atlantic Salmon crisis from sea lice and escaped farmed salmon

  10. Genetically modified salmon… This salmon has been genetically modified so that it grows faster. Should it be labeled in the grocery store. http://www.dailyfinance.com/2010/09/21/fda-hearings-on-gm-salmon-are-a-fish-fight-over-labeling/

  11. Aquaculture is contributing to overfishing through the use of wild-caught fish as feed for farmed fish. These fish pellets are made of wild fish. Up to 22 kg of wild-caught fish is needed just to produce of 1 kg farmed tuna Up to 4 kg of wild-caught fish is needed to produce 1 kg of farmed salmon

  12. Wild-caught fish, which are raised in cages, are devastating wild populations Tuna farming involves capturing wild tuna and fattening them in cages. This stops the young fish from reproducing and renewing the wild stocks.

  13. Wild animals preying on fish farms are often culled (killed) • Many animals such as wild seals, seabirds, and sharks to molluscs and crustaceans are attracted to fish farms. • They can damage the nets or eat some of the fish in the farm, so they are often killed by the fish farmers. Seals culled by fish famers in Scotland

  14. Bibliography: WWF 2012 • http://wwf.panda.org/about_our_earth/blue_planet/problems/aquaculture/