Microalgae in aquaculture by noz44nj

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									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
      •Water Temperature
    Microalgae in aquaculture
•   Bacillariophyta
•   Cyanophyta
•   Dinophyta
•   Euglenophyta
 Microalgae in aquaculture
• Experiment objective:
  – Observe the changes in the
    phytoplankton colony in a shrimp tank
 Microalgae in aquaculture
• Samples collection


• Cell counting



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

• Collected weekly

• Analyzed
  (identificated and
  counted)
             Cell counting
• Standar compound
  microscope with 10,
  20 and 40 X
  magnification
  objectives
• Haemacytometer
Cell counting
           Identification
• Key to the major
  groups (Divisions)
  of phytoplankton
  in northern
  Queensland prawn
  ponds (after
  Bellinger 1992)
  Stafford C. 1999.
              Results


• Synechocystis
              Results


• Coscinodiscuss
              Results


• Gymnodium
             Results


• Navicula
               Results


• Agmenellum
                  Algae by genera, 78 F, clouds tq 1                                                 Algae by genera, 78 F, clouds tq 2




                                                                                    # of organisms
# of organisms


                  10                                                                                 8
                                                                                                     6                            Sinechocystis
                   5                              Sinechocystis                                      4                            Navicula
                                                  Coscinodiscuss                                     2
                                                                                                                                  Agmenellum
                   0                                                                                 0
                                                  Navicula
                                  1                                                                                 1
                                                  Agmenellum
                               Genera                                                                          Genera




                       Algae by genera, 87 F, sunny, tq 1                                             Algae by genera, 87F, sunny, tq 2
 # of organisms




                                                                   # of organisms
                  10                                                                8
                                                  Sinechocystis                     6                                           Sinechocystis
                   5                                                                4
                                                  Coscinodiscuss                    2                                           Coscinodiscuss
                   0                              Gymnodium                         0                                           Surirella
                                  1               Prorocentrum                                                  1               Bellerochea
                               Genera                                                                        Genera
Thanks...

								
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