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Rotifer Culture
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Currently, the laboratory has a working stock of approximately
5-10 billion rotifers (Branchionus plicatilis) and has the
capacity of producing up to 600 million enriched rotifers each
day.
Rotifers are brackish water microorganisms used in the
first-feeding of larval finfish. Rotifers are about 150-300 µm
in size (right, top) and reproduce quickly through the production
of an egg sac (right, bottom).
Filtration and Enrichment
Seawater and freshwater
pass through a series of filtration systems including sand filters
(20 µm) and cartridge filters (10 µm, 5 µm, 0.35
µm), and is irradiated using ultraviolet light (120,000
mw/sec) (below, left).
Rotifers are enriched with Algamac or T-Isochrysis for
durations of 12, 18 or 24 hours based on client demand (below,
insert).
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Growth
Rotifers are grown in a combination of fresh
and seawater (brackish water) in large tanks (right). They are fed
a daily diet of
- baker's yeast,
- Culture Selco ®, and
- algae (T-Isochrysis, Nannochloropsis sp.).
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