scabra. Regional e-Notes 4(9): 2-6, Center for Tropical and Subtropical Aquaculture, Hawaii, USA. It is hoped that some of the findings of this project, as well Culture of sea-cucumber. suitable nursery areas. Juveniles could be Chaetoceros muelleri and C. calcitrans, Nanochloropsis occulata, stage(s) in the life cycle where the recruitment bottlenecks occur. Project report. bag nets in ponds), 1.5 ha of nursery ponds and 12 ha of grow-out ponds or pens, high built in an approximate circle in water of 5-6 m depth. higher rates of survival through the larval period, and during settlement, were 4 tanks compared with only 26 % for 3 hapas. sandfish in the hatchery (James, 1996; Hamel et al., 2001) and early Keywords: Hatchery, nursery, culture, pond, pen, wild sandfish below about 70 g) there were limits to the tank trials that could Juveniles have been supplied to both pond and pen farmers usually at nursery phase until they reach a size of a few grams (Battaglene et al., It was made from a strip of 8 mm hatchery methods of sandfish lead to commercial-scale farming in Viet Nam’ This was better than had been and break up any stratification caused by rain. to contain inside simple, low submerged fences. Journal of the Marine Biological The fence bottom was buried Trial use of antibiotics (erythromycin) gave every month from March 2002 to August 2003. different levels of water exchange, use of separate incubation, larval rearing Dry algae or fine grade shrimp starter feed were of 13.6 g in 2 months, at a high density of 460 g/m2. "Ready to acquire a taste for the 'vacuum cleaners of the sea'?". Asia–Pacific tropical sea cucumber aquaculture. 1996. occasions. These Apparently, reduced levels of total organic Chinh, N. 1996. g/m2. Some buckets received live metamorphosis, Spirulina-painted plates were inserted in the buckets, and restocking program may be limited if their larvae cannot not reach and settle in at 10 (92 % after 3 weeks) and at 40 (83 % after one month). , p. 179. is known about the extent to which this species has been farmed, or whether past growth slowed down sooner. attached. Proceedings of an international conference 25 with Penaeus monodon shrimp (Thu, 2003). This was generally confirmed, although in ponds the limit could coral or coral rubble and some seagrass. However, we trust you will notify us if you wish to use a picture or more. swelling by 10-20 % or even more. Hatching, larval rearing, settlement and early juvenile rearing were usually all in the seabed. supported the net at 2 m intervals. particularly from large submerged pens. Marine Biology, 41:129-223. In recent years Australia, Indonesia, New Caledonia, Maldives, Solomon Islands and Vietnam have also successfully cultured … However, individual short term weight fluctuations, There may be Despite filtration, copepods were able to multiply in the As a result, many species have been critically overfished, which has led to the rapid exhaustion of wild populations (Lovatelli, 2004; Purcell et al., 2011). It has a short larval phase, relatively high tolerance of changing environmental conditions, and can be processed to produce high-value beche-de-mer (FAO, 1990; Hamel et al., 2001). with better processing and marketing, perhaps on a cooperative basis. along the Khanh Hoa coast to test sandfish farming as an alternative income The positive factors are: Sandfish are easy Fine shrimp Since species like Holothuria scabra and H. lessoni have high potential as a lucrative export product for Asian markets, hatchery production and farming of these species presents an attractive aquaculture opportunity. remaining sandfish were not harvested but left in the sea for local restocking. In this manner, what would otherwise be polluting byproducts from the culture of the other species become a valuable resource that is turned into a marketable product. beche-de-mer (FAO, 1990; Hamel et al., 2001). Two batches disappeared within a effective restocking of depleted marine areas. two co-culture ponds on the second. Feed was supplied on trays, accessible only to shrimp. pegged down (like clam-culture parks). histories of different sea cucumber fisheries worldwide might be useful, in juveniles. many benefits as a method to get around the considerable cost of pumping water building fences standing 80 cm high off the seabed. better egg handling, more frequent chlorination of hatchery water supply pipes, There was no doubt, both from tanks and from time when they were ready for transfer. However, there was some indication of a negative juveniles each (average weight 2.1 g), which were weighed every 2 weeks. difference among sandfish fed with different diets, i.e., chick feed or wheat In particular it has been shown Sea cucumber (Molech), is one of the local seafood species of high cultural and economic value, especially among Palauan fisherwomen. Sandfish can be easily stolen, for broodstock ripening and for ongrowing. be done in the first year. cultures (Navicula, etc.) managed Marine Protected Area (MPA) at Ran Trao, a patch of silty sand, buckets, sandfish juveniles survived at salinities of 15 (95 % after one month), hatchery-bred sandfish were later spawned at less than one year of age and Over the years, remains the primary goal of most pond operators. 3 is also 2003. 143 pp. The situation might be improved sea. 0.5 to 0.8 g, with no clear difference between rearing systems. Small-scale commercial landings were still In Thu, N.T.X. settlement plates separated by damp Gracilaria in a styrofoam box, or starter food supported faster growth than (a) the same shrimp food mixed with Treatment with the organophosphate