Microalgae in aquaculture

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Microalgae in aquaculture

• Pablo Gonzalez-Alanis

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Microalgae in aquaculture

• Manage a body of water
• Provide more food
• Chemical fertilizers, organic materials
  (manures), suplemetary diet

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Microalgae in aquaculture

• Successful colonization
• Light to provide energy
• Inorganic nutrients
• Water Temperature

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Microalgae in aquaculture

• Bacillariophyta
• Cyanophyta
• Dinophyta
• Euglenophyta

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Microalgae in aquaculture

• Experiment objective
• Observe the changes in the phytoplankton colony
  in a shrimp tank

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Microalgae in aquaculture

• Samples collection
• Cell counting
• Identification

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Samples collection

• 3 tanks made of plastic liner (23 m2 aprox)
• 50 shrimps/ m2
• Commercial pelleted feed (25 of total shrimp
  biomass) daily

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Samples collection

• Collected weekly
• Analyzed (identificated and counted)

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Cell counting

• Standar compound microscope with 10, 20 and 40 X
  magnification objectives
• Haemacytometer

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Cell counting
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Identification

• Key to the major groups (Divisions) of
  phytoplankton in northern Queensland prawn ponds
  (after Bellinger 1992) Stafford C. 1999.

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Results

• Synechocystis

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Results

• Coscinodiscuss

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Results

• Gymnodium

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Results

• Navicula

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Results

• Agmenellum

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