scallop aquaculture

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SCALLOP AQUACULTURE By Sarina Winter

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Scallop Aquaculture. By Sarina Winter. Species Cultivated. Patinopecten yessoensis (China, Japan) Placopecten magellanicus (eastern USA) Pecten maximus (United Kingdom, France, Spain, Norway) Agropecten irradians (China). Market Value. $15-20 per lb - PowerPoint PPT Presentation

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Page 1: Scallop Aquaculture

SCALLOP AQUACULTUREBy Sarina Winter

Page 2: Scallop Aquaculture

SPECIES CULTIVATED Patinopecten yessoensis (China, Japan) Placopecten magellanicus (eastern USA) Pecten maximus (United Kingdom, France, Spain, Norway) Agropecten irradians (China)

Page 3: Scallop Aquaculture

MARKET VALUE $15-20 per lb Short shelf life of live scallops = only

available close to cultivation sites Frozen or canned marketed

Global aquaculture production of Yesso scallop

Page 4: Scallop Aquaculture

LIFE CYCLE 2 Days 15 Days

50 Days

28 Days

150 Days (spat)

~1cm long~250 μm

Page 5: Scallop Aquaculture

LIFE CYCLE Spat collected from ocean

Mesh bags filled with material (ex soft netlon) are tied to rope in ocean

Moved to pearl bag until 3 cm (high mortality if moved when smaller)

Broodstock Spawning induced by varying water

temperature, increasing water circulation, or by an injection of serotonin.

Post-settlement spat may be further grown in nursery tanks

Then moved to pearl nets

Page 6: Scallop Aquaculture

ALTERNATE BREEDING

Just kidding

Page 7: Scallop Aquaculture

GROWING METHODS Hanging lanterns: Ear hanging: Pocket nets:

Bottom culture:

Page 8: Scallop Aquaculture

FEEDING Scallops are filter feeders Algae with high protein Phytoplankton (Chaetoceros neogracile,

Isochrysis galbana)

Page 9: Scallop Aquaculture
Page 10: Scallop Aquaculture

CONDITIONS Depth: 4-10 m Salinity: 32-34‰ Temperature 4-8 °C (39-46.4 °F) Life span is 10-12 years (Harvested typically at

2-3 years)

Page 11: Scallop Aquaculture

FARMING PROS Scallops don’t need to have food supplied to

them They clean the water as they filter feed There aren’t any diseases or parasites

associated with scallops Many of the nets are collapsible and easy to

store

Page 12: Scallop Aquaculture

FARMING CONS Labor intensive Visual pollution Eutrophication associated with scallop

farming Only the adductor mussel (sometimes roe) is

harvested Availability of reliable seed supply (natural)