What is Aquaculture. Photograph by HBOI Mariculture The husbandry marine organisms Photograph by HBOI.

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Presentation transcript:

What is Aquaculture

Photograph by HBOI

Mariculture The husbandry marine organisms Photograph by HBOI

Aquaponics The husbandry of animals and plants together Photograph by HBOI

Aquaculture is Agriculture The husbandry of freshwater and marine organisms is no different than their terrestrial counterparts. Engineering, nutrition, health management, system and personnel management, marketing and business planning are comparable.

Fisheries stock enhancement Bait production Ornamentals Biomedical Photograph by HBOI

How many of you eat seafood? Aquaculture production in North America is valued at $1.5 billion About 40% of the seafood we eat is from aquaculture farms

Commercially Cultured Species Photograph by HBOI CatfishTilapiaTroutSalmon Striped Bass Striped BassOystersClamsShrimpCatfishTilapiaTroutSalmon OystersClamsShrimp

Research and Development Species SnapperCobiaFlounderPompanoSturgeonTunaConchLobsterSnapperCobiaFlounderPompanoSturgeonTunaConchLobster Photograph by HBOI

Phases of Aquaculture BroodstockManagementBroodstockManagement HatcheryProductionHatcheryProduction NurseryProductionNurseryProduction Grow-outGrow-out Harvest & Market

Aquaculture Systems Open –Netpens, cages, longlines, bottom culture Semi-closed –Ponds, raceways, tanks Closed –raceways, tanks

Aquaculture systems: Open Organisms are reared in natural systems No diversion or pumping of water Floating netpens, floating racks, longlines, on-bottom culture

Aquaculture systems: Semiclosed Organisms are reared in manmade impoundments Water is diverted from natural flows or pumped Examples are ponds and raceways

Aquaculture systems: Closed Water is reused - little or no effluent Sophisticated water filtration and treatment Recirculating aquaculture systems, aquariums Photograph by HBOI

Water Systems Flow-through: one time use of water Recirculation: reuse of water

Aquaculture systems: Flow-through Pretreatment Water Source Rearing Tank Effluent Photographs by HBOI

Flow-through aquaculture systems Disadvantages No environmental control Source of contaminants, pollutants Greater regulatory constraints Advantages Lower cost Simplicity Provides ambient food Requires lower skill level

Aquaculture systems: Recirculating Pretreatment Rearing Tank Water Source Post treatment Effluent Water treatment Biofiltration Disinfection

Recirculating aquaculture systems Disadvantages Higher costs Higher skill level Complex system, potential problems Must provide all feed Buildup of toxins & pathogens Advantages Environmental control Free of outside contaminants Fewer regulatory constraints

Methods of Cultivation Extensive vs. Intensive Extensive = Utilize natural productivity Low density No or supplemental feeds Low water exchange Intensive = Maximize production Limited space High density Complete diet High water exchange