Molluscan aquaculture in atlantic canada
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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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Molluscan aquaculture in atlantic canada

Molluscan AquacultureinAtlantic Canada


Need for aquaculture

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.


Shellfish filter feeding

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


Molluscan aquaculture in atlantic canada

This slide shows clumped mussels open and actively feeding


Molluscan aquaculture in atlantic canada

AMERICAN OYSTER

ANATOMY

INTESTINE

HEART

STOMACH

GILLS

MANTLE


Molluscan aquaculture in atlantic canada

Condo with Oysters

Oyster

Aquaculture

The cages are tied and floated in rows to feed on naturally occurring food


Molluscan aquaculture in atlantic canada

Quahaug

Aquaculture

Shows high densities in red areas


Molluscan aquaculture in atlantic canada

Lines from a distance

Mussel

Aquaculture

Mature lines out of water

Closer to lines on a calm day


Molluscan aquaculture in atlantic canada

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


Molluscan aquaculture in atlantic canada

SCUBA

Divers getting positioned


Molluscan aquaculture in atlantic canada

Click on middle frame

Look at mussel lines

SCUBA

Look for starfish in divers hand


Molluscan aquaculture in atlantic canada

SCUBA

This mussel line will be used for samples


Research

Research

  • “Weather Station” use of cages

    • Temperature/Salinity

    • Water quality

  • What are the conditions in the bay

    • Growth / Survival

    • Competition

    • Invasive species


  • Molluscan aquaculture in atlantic canada

    Mussel Cage

    DFO/AVC

    1 m

    Temperature

    Recorder

    (1 min intervals)

    Collecting portion


    Molluscan aquaculture in atlantic canada

    Experimental Mussel Cage on Site


    Molluscan aquaculture in atlantic canada

    This mussel measures 4.95 centimeters

    Growth


    Research1

    Research

    • Field studies

      • Deployment of 50 cages in PEI, NS, and NB (Oysters and Mussels)


    Molluscan aquaculture in atlantic canada

    How can there still be good growth in many areas

    that look crowded?


    Working with aquatic ecosystems

    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


  • Invasive species

    Invasive species

    Green Crab

    Clubbed Tunicate

    Codium


    Molluscan aquaculture in atlantic canada

    Mussel research cage covered in club tunicates


    Questions

    Questions?

    Aquaculture

    Marine Biology

    Scientific Research

    Ecosystems

    Scuba Diving

    Mussels

    Oysters

    ?

    Crabs

    Lobsters

    Challenges

    Invasive species


    Questions on any of the topics above

    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: [email protected]

    Or any DFO office in your area


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