Appendix II. Decapsulation Procedure for. Artemia Cysts. Hydration. 1. Hydrate cysts by placing them for 1h in water (less than g l 1), with aeration, at 25°C. In order to ensure the highest nutritional value, Artemia cysts should be decapsulated prior to hatching. This will disinfect the cysts, remove the. The present paper describes the technology developed by the authors for the routine decapsulation of Artemia cysts. The advantages which.

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This involves the need for a large quantity of brine shrimp eggs.

Wash the eggs in the filter bag with water once more. Hydrating the egg will pop out the dimple and make the egg round again.


Hyperlinks to non-FAO Internet sites do not imply any official endorsement of or responsibility for the opinions, ideas, data or products presented at these locations, or guarantee the validity of the information provided. Introduce the artemia eggs into plastic containers. Decapsulation of brine shrimp eggs is carried out before hatching. Leave them at that stage until the white colour gradually becomes orange. This is done by dissolving as much salt in warm water as you can.

Stir until mixed thoroughly.

You now have decapsulated brine shrimp eggs. Siphon all these eggs out and eecapsulation if the quantity of incompletely decapsulated eggs is large however, they can be stored in refined salt until the next decapsulation process. Refill the Imhoff cone with about ml of sodium hypochlorite bleach.

Then add bleaching powder at the rate of Then put them into a filter bag and wash them until artemja are completely clean. Filtering and neutralizing Decapsulated Brine Shrimp.


A modified technique has been developed whereby decapsulation is conducted by using calcium oxide and calcium hypochlorite as stimulating agents. Decapsulated eggs preserved in refined salt for more than 7 weeks retained normal smell and colour.

Decapsulated Brine Shrimp | Salt Lake Brine Shrimp

Instead of preserving decapsulated artemia eggs in strong salt solution brinethey can be kept directly in refined salt. Lately the techniques for hatching have been improved.

Artemia eggs decapsulatio have been decapsulated have a higher hatching efficiency than those which are not decapsulated. All that needs to be done is to hydrate the non-hatching decapsulated artemia for minutes and feed directly to fish or shrimp…this is a very quick and easy way to feed. Additionally, the shells tend to cause water pollution and act as a carrier of disease.

When you buy brine shrimp eggs they are dehydrated, thus stopping their metabolism and they enter a stage of diapause or hibernation until aryemia again.

Decapsulation of the brine shrimp eggs solves these problems. This is used for storage only.

They are then ready for hatching or storage in refined salt until required. Decapsulation consists of chemically removing, in a hypochlorite solution, the shell or chorion of the artemia cysts and leaving only the embryo. The sole purpose of links to non-FAO sites is to indicate further information available on related topics.

The decapsulation will be more effective when the egg does not have the dimple. These small eggs look dimpled when they are dehydrated. The use of Artemia cysts in Aquaculture. By continuing to use this website, you agree to their use. This site uses cookies. Monitoring the color is very important if decapsulating for live hatchings.

Dry artemia eggs are deflated like bean seeds and change into decapsulaton round shape when completely hydrated. Eggs decapsulated by either process give the same result. Stir for 5—8 minutes until the temperature stays steady; this shows that the reaction of the first step of decapsulation has been completed. Add the hydrated egg into sodium hypochlorite and aerate again from the bottom. The Chacheongsao Fisheries Station, which is responsible for this project experiment, carries out research, training and technological development in the field of fresh and brackishwater prawn farming.


Be sure the aeration is minimal as to reduce foaming. The Chacheongsao Fisheries Station, considering the excessive cost of decapsulating artemia eggs by this method, supported a new experiment agtemia this field. The eggs of artemia do however have a shell which is dark brown in colour.

If any egg sticks to the sides above the water swish the water around to keep the egg in the water column. Brine shrimp eggs which have been decapsulated are in a better condition for hatching than those which are not decapsulated Table 1. The amount of time and aremia when the artemia cysts are exposed to the hypochlorite solution will determine whether the artemia will hatch-out or be non-hatching decapsulated artemia. Thoroughly rinse until the odor of bleach is gone. Shrimp and fish hatcheries use their lower grade egg to produce a live or hatching decapsulated egg.

The embryo is literally cooked! In Aprilan experiment was conducted which decapsulated brine aremia eggs with sodium hydroxide caustic soda and sodium hypochlorite, following the procedures of Bruggeman et al.