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AAAQ2024 (Chapter 7 - 10)
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Give 2 problems encountered with artemia culture
Slow growth - temperature, salinity, pH, food; culture crashing - oxygen, health
What is enrichment process?
Enrich the live feed with higher nutritional value
What is decapsulation?
A process of remove the hard egg shell that covers Artemia cyst.
Why light is required for artemia cysts hatching process?
To initiate embryonic development, water temperature
Give 4 parameters of artemia culture
Temperature, salinity, aeration (oxygen), pH, light
Give 2 types of reproduction for artemia
Oviparous (cysts), Ovoviviparous (nauplius)
How to differentiate male and female artemia?
Male: clasper, female: brood sac.
Can artemia used as first feeding to the fish larvae?
No. Rotifer then followed by artemia.
Artemia population is from sea. True or false?
Inland saltwater lake.
What is the problem associated with Daphnia culture?
Contamination of rotifer - sieve or oxygen level to remove the rotifer
Name the organism in this picture.
Moina
How to harvest Daphnia?
Sieve, plankton net
Give 2 types of method to culture Daphnia.
Outdoor pond, tank
Give 4 parameters that need to monitor for Daphnia culture.
Temperature, pH, oxygen, ammonia
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