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Microalgae in aquaculture

Microalgae in aquaculture. Pablo Gonzalez-Alanis. Microalgae in aquaculture. Manage a body of water Provide more food Chemical fertilizers, organic materials (manures), suplemetary diet. Microalgae in aquaculture. Successful colonization Light to provide energy Inorganic nutrients

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Microalgae in aquaculture

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  1. Microalgae in aquaculture Pablo Gonzalez-Alanis

  2. Microalgae in aquaculture • Manage a body of water • Provide more food • Chemical fertilizers, organic materials (manures), suplemetary diet

  3. Microalgae in aquaculture • Successful colonization • Light to provide energy • Inorganic nutrients • Water Temperature

  4. Microalgae in aquaculture • Bacillariophyta • Cyanophyta • Dinophyta • Euglenophyta

  5. Microalgae in aquaculture • Experiment objective: • Observe the changes in the phytoplankton colony in a shrimp tank

  6. Microalgae in aquaculture • Samples collection • Cell counting • Identification

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

  8. Samples collection • Collected weekly • Analyzed (identificated and counted)

  9. Cell counting • Standar compound microscope with 10, 20 and 40 X magnification objectives • Haemacytometer

  10. Cell counting

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

  12. Results • Synechocystis

  13. Results • Coscinodiscuss

  14. Results • Gymnodium

  15. Results • Navicula

  16. Results • Agmenellum

  17. Thanks...

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