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Aquaculture practices applied to micro-algae cultivation. Kevin Fitzsimmons, Ph,D . Soil, Water, and Environmental Sciences 2 June 2010. Algae Aquaculture. Algae represent the largest aquaculture crop on global basis Algae are a major component of diet in Asia and Pacific cuisine

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aquaculture practices applied to micro algae cultivation

Aquaculture practices applied to micro-algae cultivation

Kevin Fitzsimmons, Ph,D.Soil, Water, and Environmental Sciences

2 June 2010

algae aquaculture
Algae Aquaculture
  • Algae represent the largest aquaculture crop on global basis
  • Algae are a major component of diet in Asia and Pacific cuisine
  • Algae are a growing sector for niche markets in the US
aquaculture producers know how to manage algae
Aquaculture producers know how to manage algae
  • Fish, shrimp, and bivalve farmers deal with algae blooms on daily basis
  • They are experts on water management and removing small living things from water
  • They have large amounts of nutrient rich water and facilities for holding water
  • Algae by-products are valuable feed ingredients
slide8

Demonstration ponds stocked with Gracilaria & Eucheuma as part of aquaculture restoration post-tsunami

KAB. ACEH PIDIE (5.073) Ha

KAB. BIREUN(6.710) Ha

Aceh Besar

KAB. ACEH BESAR (3.450) Ha

initial stocks from ohama corporate farm 1000 kg brought to sumatra
Initial stocks from Ohama corporate farm (1000 kg) brought to Sumatra

Fresh material

Material loaded from farm

Gracilaria distributed into ponds

slide10
Workshops andtraining
  • Field visits to farmers
shrimp fish seaweeds
Shrimp - fish - seaweeds

Fish cage effluents (feed and feces) fertilize seaweed

saudi arabia project
Saudi Arabia project

Integrated fish and shrimp effluent to fertilize algae

lab culture of micro and macro algae
Lab culture of micro and macro algae

Bioreactor and raceway production

micro algae aquaculture
Micro-algae aquaculture
  • Commonly used for larval fish, shrimp, and bivalves
  • Some for human consumption
  • Spirulina, Super blue-green algae, etc.
  • Most US microalgae culture is in the Western Region (California, Oregon, Washington)
blue greens or cyanophytes
Blue-greens or Cyanophytes
  • Most commonly farmed cyanobacteria is Spirulina
  • Spirulina was collected naturally from Lake Texcoco by the Aztec and by natives around Lake Chad in central Africa
  • Spirulina has now become a major product in the health food market, farms in California
harvesting
Harvesting
  • Rotating screen filters
  • Water passes through, how much algae can be caught in:60 µm screen?20 µm screen? 5 µm screen?
integrated pest management
Integrated Pest Management
  • First ARID trials
  • Diatoms first fouling organisms
  • Grazing protozoan second organism
  • Need to develop IPM plan similar to those developed for hydroponics and field crops
by product uses
By-product uses
  • Aquaculture feeds
  • Sources of beta-carotene, astaxanthin, canthaxanthin, and other carotenoids