SURVIVAL RATE AND GROWTH OF TISSUE CULTURE SEAWEED Kappaphycus alvarezii  IN AQUARIUM

The presence of a limiting in open sea water is one factor inhibiting the provision of seaweed seedlings/nursery. Frequently, there was a short age of seedlings and the uncertainty in adequate quality and quantity at the time of planting may cause delays in production. Moreover, seaweed seedlings will be expensive because of the high demand and cost of procurement is also great, because they have to come from other areas.

This activity was carried out in the laboratory of acclimatization station Marine Aquaculture Development Center (BPBL) Lombok Gerupuk, Central Lombok NTB from March to October 2015.  Planting were done during six months in the same aquarium 4 (60 cm x 60 cm x 60 cm) and environmental conditions and almost the same. Each tank was stocked with 100 individuals, 150 individuals, 300 individuals and 400 individuals.  

Results showed that the aquarium with a density of 150 individuals had the best survival rate (100%) and the growth is better, and followed by 100 individuals, 300 individuals and 400 individuals.  Moreover there were additional numbers of individual of about 5-10% due to spontaneous division during the planting period.