Hello
I would like to know how many people are interested in starting phytoplankton cultures and in particular want to order Guillard's F/2 formula (growth medium). There is a non-sponsor who specializes in aquaculture who is willing to import the dry algae fertilizer from Florida Aqua Farms (1kg makes 10,000 litres).
It appears that there are people who have Nannochloropsis occulata and rotifers going, primarily for breeding purposes. Nannochloropsis is a type of non-motile phytoplankton rich in eicosapentaenoic acid or EPA (approx. 25% of total fatty acid) and arachidonic acid or AA (approx. 7% of total fatty acid), they are Polyunsaturated Fatty acids (PUFA) and very important nutrient source for planktonic zooplankton and they keep fish healthy/ corals (such as soft corals and some Gorgonia). Nannochloropsis is however poor in docosahexaenoic acid or DHA (approx. 0% of total fatty acid).
The fatty acid composition of phytoplankton Isochrysis galbana (Tahiti also known as T. ISO) contains approximately 10% DHA and is therefore used to supplement Nannochloropsis in order to product rotifers (zooplankton) suitably rich in EPA, AA and DHA for the development of fish larvae.
The flagellate (motile) phytoplankton Tetraselmis suecica is also used in since it has been found to produce antibiotic-like compounds. For more detailed information see: The Breeder's Net: Culturing Larval Fish Foods, Part I Advanced Aquarist | Aquarist Magazine and Blog)
The diatom (has a silica shell) Chaetoceros calcitrans is used for for feeding juvenile stages of bivalve molluscs due to its small size (approx. 2.5 microns). However Skeletonema costatum, Thalassiosira pseudonana and Chaetoceros gracilisare easier to culture.
Featherduster worms, scallops, clams, Gorgonians and zooplankton all feed on phytoplankton. Some feed primarily on phytoplankton (and maybe bacteria particulates) like Featherduster worms and Dendronephthya spp.
Any recommendations for sources of these (or other) phytoplankton/ diatoms starter cultures in South Africa or Guillard's F/2 or Walnes phytoplankton fertilizer are welcome. Florida Aqua Farms (in the USA) also sells Microalgae culture disks of Nannochloropsis, Tetraselmis, Isochrysis and Dunaliella as well as rotifer/ amphipods and culturing equipment if anyone is interested.
I would like to know how many people are interested in starting phytoplankton cultures and in particular want to order Guillard's F/2 formula (growth medium). There is a non-sponsor who specializes in aquaculture who is willing to import the dry algae fertilizer from Florida Aqua Farms (1kg makes 10,000 litres).
It appears that there are people who have Nannochloropsis occulata and rotifers going, primarily for breeding purposes. Nannochloropsis is a type of non-motile phytoplankton rich in eicosapentaenoic acid or EPA (approx. 25% of total fatty acid) and arachidonic acid or AA (approx. 7% of total fatty acid), they are Polyunsaturated Fatty acids (PUFA) and very important nutrient source for planktonic zooplankton and they keep fish healthy/ corals (such as soft corals and some Gorgonia). Nannochloropsis is however poor in docosahexaenoic acid or DHA (approx. 0% of total fatty acid).
The fatty acid composition of phytoplankton Isochrysis galbana (Tahiti also known as T. ISO) contains approximately 10% DHA and is therefore used to supplement Nannochloropsis in order to product rotifers (zooplankton) suitably rich in EPA, AA and DHA for the development of fish larvae.
The flagellate (motile) phytoplankton Tetraselmis suecica is also used in since it has been found to produce antibiotic-like compounds. For more detailed information see: The Breeder's Net: Culturing Larval Fish Foods, Part I Advanced Aquarist | Aquarist Magazine and Blog)
The diatom (has a silica shell) Chaetoceros calcitrans is used for for feeding juvenile stages of bivalve molluscs due to its small size (approx. 2.5 microns). However Skeletonema costatum, Thalassiosira pseudonana and Chaetoceros gracilisare easier to culture.
Featherduster worms, scallops, clams, Gorgonians and zooplankton all feed on phytoplankton. Some feed primarily on phytoplankton (and maybe bacteria particulates) like Featherduster worms and Dendronephthya spp.
Any recommendations for sources of these (or other) phytoplankton/ diatoms starter cultures in South Africa or Guillard's F/2 or Walnes phytoplankton fertilizer are welcome. Florida Aqua Farms (in the USA) also sells Microalgae culture disks of Nannochloropsis, Tetraselmis, Isochrysis and Dunaliella as well as rotifer/ amphipods and culturing equipment if anyone is interested.