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Molluscan Aquaculture in Atlantic Canada

Molluscan Aquaculture in Atlantic Canada. Need for Aquaculture. The need for food around the world is always increasing Fish stocks are declining - New resources need to be developed Growing and caring for aquatic organisms for the purpose of food production

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Molluscan Aquaculture in Atlantic Canada

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  1. Molluscan AquacultureinAtlantic Canada

  2. Need for Aquaculture • The need for food around the world is always increasing • Fish stocks are declining - New resources need to be developed • Growing and caring for aquatic organisms for the purpose of food production • Salmon, Mussels, Oysters, Scallops, Trout, Arctic Char, Sea Urchins, Kelp, etc.

  3. Shellfish - Filter Feeding • Filter feeding animals are very important in an ecosystem • They eat what is already there - so they don’t need to be given artificial food • They clean the water - most can even filter and eat bacteria, making them safe to consume

  4. This slide shows clumped mussels open and actively feeding

  5. AMERICAN OYSTER ANATOMY INTESTINE HEART STOMACH GILLS MANTLE

  6. Condo with Oysters Oyster Aquaculture The cages are tied and floated in rows to feed on naturally occurring food

  7. Quahaug Aquaculture Shows high densities in red areas

  8. Lines from a distance Mussel Aquaculture Mature lines out of water Closer to lines on a calm day

  9. 90 meters Marker Buoy Support Line Buoy Between 5 & 7 Metres deep 150 socks per line Mussels Sock Anchor BOTTOM Suspended mussel line Mussel Aquaculture

  10. SCUBA Divers getting positioned

  11. Click on middle frame Look at mussel lines SCUBA Look for starfish in divers hand

  12. SCUBA This mussel line will be used for samples

  13. Research • “Weather Station” use of cages • Temperature/Salinity • Water quality • What are the conditions in the bay • Growth / Survival • Competition • Invasive species

  14. Mussel Cage DFO/AVC 1 m Temperature Recorder (1 min intervals) Collecting portion

  15. Experimental Mussel Cage on Site

  16. This mussel measures 4.95 centimeters Growth

  17. Research • Field studies • Deployment of 50 cages in PEI, NS, and NB (Oysters and Mussels)

  18. How can there still be good growth in many areas that look crowded?

  19. Working with Aquatic Ecosystems • Dynamic - Everything is in movement • Tides, currents, water exchange, etc. • Interrelated - All the parts are connected • Impact on one part affects the others • Influences - Many things affect the ecosystem • Water based factors - Constantly changing environment • Land based factors - Most things eventually finish in the oceans • Natural and Man-made impacts • Other species

  20. Invasive species Green Crab Clubbed Tunicate Codium

  21. Mussel research cage covered in club tunicates

  22. Questions? Aquaculture Marine Biology Scientific Research Ecosystems Scuba Diving Mussels Oysters ? Crabs Lobsters Challenges Invasive species

  23. Questions on any of the Topics Above ? Contact Matthew Hardy Aquaculture Biologist Fisheries and Oceans Canada Gulf Region 343 Université Avenue Moncton, N.B.   E1C 9B6 Tel. (506) 851-2728 E-mail: hardyma@dfo-mpo.gc.ca Or any DFO office in your area

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