INVE GSL EG ARTEMIA

Some of our brands offer Great Salt Lake cysts. At Great Salt Lake, the Artemia cysts are carefully harvested and processed as a natural product. The environmental care, respect of stringent laws and focus on sustainable harvesting and management, makes Great Salt Lake Artemia cysts unique in the rearing of top quality shrimp and fish in hatcheries worldwide.

INVE has undisputed knowledge on the types of Artemia cysts available in the world. Based on this insight, cysts are classified according to their characteristics such as hatching, enrichment, and other elements of value as a feed for aquaculture.

Importance of Artemia for fish and crustacean larviculture

Artemia contributes immensely to the development and supply of fish and crustacean juveniles on a global level. In these passed 35 years we have experienced the surge of consistent juvenile supply for many aquatic species thanks to the use of Artemia.

This is because Artemia solves important bottlenecks in fish and crustacean hatchery production:

• The majority of marine fish and crustacean larvae have an underdeveloped digestive system and rely on feed such as Artemia.
• Artemia is commercialised in the form of cysts which is an off-the-shelf product and can be fed to larvae in 24h.
• Artemia nauplii can be further boosted with nutritional components that are essential for successful larviculture production.

Enrichment of Artemia

Enrichment has important positive effects on larval survival, growth and quality (robustness & performance). Enrichment is normally done for maximum 24h and is initiated as soon as the Artemia reaches Instar II stage (22-25h from start of hatching). Before this stage Artemia do not have a functional digestive system.

Enrichment products

Enrichment products are composed of various ingredients which are essential for the production of healthy and robust juveniles. INVE is well known in providing a wide range of high quality enrichment products formulated and produced with the finest raw materials that foment the production of robust and performing juveniles. For further information contact your local INVE representative.

Sustainable management of natural cyst resources and ecosystem protection

Artemia can be found naturally in salt lakes or in salt pens. The majority of these lakes are monitored in order to ensure sustainability of the ecosystem and future supply of cysts. In particular, cyst harvesting activities are aligned with the cyst densities in the lakes.

Artemia nauplii are hatched and depending on the cyst type and if crustacean or fish larvae are cultured, they are further nutritionally enhanced from Instar II by the process of enrichment.

REGULAR CYSTS (non enhanced and enhanced)

Enriched nauplii

• Instar I are directly fed to crustacean larvae
• From Instar II onwards, nutritional properties can be enhanced through enrichment

Instructions for use, general parameters for optimal Artemia hatching

Artemia cysts hatch optimally if the parameters listed below are respected.

Tank Preparation

1. Take out all removable parts (pipes etc.) and clean them separately with soap, rinse and disinfect by immersion in bleach solution (2%)
2. Brush thoroughly the tank with soap after rinsing repeat exercise with bleach solution
3. Rinse again extensively with water and fill the tank with filtered sea water
4. Disinfect the hatching water with e.g. 10 ppm active chlorine and aerate gently for ±1 hour
5. Deactivate any remaining chlorine by adding 12 ppm sodiumthiosulphate

Start of hatching

1. Check temperature (29°C for optimal hatching results)
2. Open aeration (must be vigorous)
3. Weigh out the required quantity of cysts
4. Switch on lights on hatching tank
5. Add cysts to the hatching tank
6. Check pH and if needed adjust with buffer with 0.5-1 g/l sodium bicarbonate

End of hatching

Hatching is ended when the highest number of Instar I is obtained, normally hatching should be terminated within 18-24h.
However, since Artemia is a living organism and cysts are collected from a natural environment incubation time might change from year to year. For further information contact your local INVE representative.

Importance of Artemia for fish and crustacean larviculture

Artemia contributes immensely to the development and supply of fish and crustacean juveniles on a global level. In these passed 35 years we have experienced the surge of consistent juvenile supply for many aquatic species thanks to the use of Artemia.

This is because Artemia solves important bottlenecks in fish and
crustacean hatchery production:

• The majority of marine fish and crustacean larvae have an underdeveloped digestive system and rely on feed such as  Artemia.
• Artemia is commercialised in the form of cysts which is an off-the-shelf product and can be fed to larvae in 24h.
• Artemia nauplii can be further boosted with nutritional components that are essential for successful larviculture production.

Enrichment of Artemia

Enrichment has important positive effects on larval survival, growth and quality (robustness & performance). Enrichment is
normally done for maximum 24h and is initiated as soon as the Artemia reaches Instar II stage (22-25h from start of hatching). Before this stage Artemia do not have a functional digestive system.

Storage / Shelf Life

Store in a dry place below 5°C. Temperature above 5°C can reduce the quality of the product. During storage the packaging should be kept carefully closed. Once opened, the product should be used immediately.

Packaging