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Low-cost experimental unit and growth medium for testing soil effects on shrimp culture |
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| Authors: | Gad Ritvo Joe B Dixon Tzachi M Samocha Addison L Lawrence William H Neill |
| Institution: | a Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843-2474, USA b Shrimp Mariculture Project, Texas Agricultural Experiment Station, Texas A&M University System, Port Aransas, TX 78373, USA c Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843, USA |
| Abstract: | PVC pipes, 10 cm in diameter and 46 cm long, sealed at one end and filled with 18 ppt of artificial seawater and a 6-cm layer of substrate, were tested as experimental units for the culturing of penaeid shrimp. The growth substrate was prepared by mixing 70% quartz sand, 24% Georgia kaolin, 5% Gonzales bentonite and 1% Bermuda grass hay. One juvenile Penaeus vannamei was placed in each container and shrimp weight gain was monitored. In the first study (four replicates), shrimp grew to 8.15 g within 8 weeks at a rate of ≈1 g week?1 with no mortality; thereafter, growth decreased and 25% mortality was observed. In the second study (seven replicates), the average weight of shrimp was 8.66 g in 10 weeks, with 29% mortality occurring between the seventh and eighth week. Experimental unit cost was $3.30. |
| Keywords: | Formulated sediment Reference sediment Aquaculture |
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