Cost comparisons of rearing larvae of freshwater shrimp, Macrobrachium acanthurus and M. rosenbergh, to juveniles
Hagood, R.W.; Willis, S.A. (1976). Cost comparisons of rearing larvae of freshwater shrimp, Macrobrachium acanthurus and M. rosenbergh, to juveniles. Aquaculture 7(1): 59-74
In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622, more
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| Keywords |
Analysis > Economic analysis
Aquaculture > Freshwater aquaculture
Controlled conditions
Developmental stages > Juveniles
Developmental stages > Larvae
Rearing
Survival
Macrobrachium acanthurus (Wiegmann, 1836) [WoRMS]; Macrobrachium rosenbergii (De Man, 1879) [WoRMS]
Fresh water |
| Authors | | Top |
- Hagood, R.W.
- Willis, S.A.
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| Abstract |
Costs were determined for rearing larval Macrobrachium rosenbergii (De Man) and M. acanthurus (Wiegmann). Rearing was conducted in 2 phases. First-phase rearing (first 10 days) was conducted in conical fiberglass tanks with recalculated, filtered, brackish water; 2nd-phase rearing(final 30 days) was done in aerated 1000-1 concrete tanks. To minimize water quality problems and debris accumulation in 2nd-phase rearing, larvae were transferred every 4 to 5 days to a new tank of clean water. Larval food consisted of newly hatched Artemia and either freshly ground fish or freeze-dried fish. Mean survival in five M. rosenbergii rearing trials was 43% in 40 days at a final density of 12 juveniles per liter. Mean survival of 4 M. acanthurus trials was 25% in 44 days at a final density of 3 juveniles per liter. Average total cost of labor, operation (electricity), food and water per thousand juveniles produced was $3.56 for M. rosenbergii and $13.42 for M. acanthurus. Extrapolation of results to larger (3000-1) 2nd-phase rearing tanks showed M. rosenbergii rearing cost could be reduced to $1.87/1000. |
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