Artemia Nauplii

Artemia Nauplii

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Live nauplii of franciscan brine shrimp in bottle.

Grown in the laboratory and fed exclusively with phytoplankton.

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Branchiopoda
Order: Anostraca
Family: Artemiidae
Genus: Artemia
Species: Artemia salina (Linnaeus, 1758)

General characteristics

Small gill crustacean.
Since the 1930s, its use in aquaculture has increased considerably, currently being the best and in some cases the only live food for the first larval stages of many species of fish and crustaceans.
Its distribution extends to all continents except Antarctica. They are found in very high salinity lakes (up to 300g / L of salt) where their predators cannot survive. Their great adaptability means that we can find them even in fresh water.
They survive in waters with a high oxygen deficit (supporting levels of up to 0.5mg of oxygen per liter in their adult phase).
It is used in the breeding of fish and crustaceans for both human consumption and aquariums. Used by betta fish breeders.
The nutritional value of stage I nauplii is higher than in stages II and III, the dry weight and caloric content decreases as they increase in size if they do not feed and the increase in size does not help the feeding of certain predators anymore. that these, having a lower swimming rate, require that the brine shrimp have a more limited swimming capacity. The color of the brine shrimp is also noteworthy, since just hatched it is a dark orange color (more visible to predators) and as it increases in size it becomes paler and more transparent if it does not feed.
It has a high digestibility and meets the requirements in terms of macronutrients and micronutrients of the larvae of marine and freshwater fish, as well as crustaceans.
Newly hatched nauplii are high in fatty acids.
By means of bioencapsulation techniques we can introduce into the newly hatched brine shrimp components that the predator is interested in (vitamins, pigments, amino acids,…).

Nutritional value

High value in vitamins and proteins
Polyunsaturated fatty acids and high content of interferons (glycoproteins synthesized by cells infected by viruses that inhibit their multiplication)
Considerable amounts of beta carotenes, a substance that enhances and intensifies the color of the fish they feed ( an example of this are flamingos, of which their characteristic pink color stands out for feeding on brine shrimp).

Approximate composition of Artemia salina:

Proteins 52-74%
Carbohydrates 7-17%
Lipids 8-16%
Sugars 3-4%
Moisture 85-90%
Ash 9-20%

Advantages presented as food

  • They are small in size (400-500 microns freshly hatched) and this makes them ideal for feeding fingerlings.
  • Great efficiency in feed conversion.
  • They reinforce the hunting instinct of fish.
  • Excellent food for all types of fish and invertebrates, promoting their pigmentation and good health.
  • We can keep them cold to slow down their metabolism and increase oxygen levels so that they last a little longer.