Artikel Ini Telah Direview Oleh:
Nabilla Anggi
Magister Budidaya Perairan
The fluctuating water salinity of vannamei shrimp ponds can affect the average salt concentration of pond waters. Vannamei shrimp pond waters that have a stable level of salinity will optimize the survival of vannamei shrimp. Curious about how to control the salinity of vannamei shrimp pond water? Read more in this article!
Effect of Water Salinity in Vaname Shrimp Ponds
The effect of the salinity of vannamei shrimp pond water can occur directly and indirectly. The direct effect of water salinity consists of osmotic processes on osmoregulation, vannamei shrimp digestive ability, and feed absorption. Meanwhile, the influence of salinity indirectly leads to water quality such as salinity, pH, and dissolved oxygen.
Vaname shrimp need water with a salinity of 15-25 ppt, while tiger prawns need water with a salinity of 20-25 ppt. More careful observation is needed to maintain the salinity of vannamei shrimp pond water in order to get maximum yields.
Causes of Changing Pond Salinity
Seasonal differences can affect pond water salinity. In general, fluctuations in pond water salinity are caused by rainwater, phytoplankton imbalance, and ammonia. The safe concentration level of ammonia in vaname shrimp is 0.1 mg/L, while the concentration level of ammonia which causes death in vannamei shrimp is <1.29 mg/L.
How to Raise and Lower the Salinity of Pond Water
Changes in salinity easily occur along with changes in weather, so Farmers need to check pond water salinity regularly and deal with it immediately if there is a drastic change.
Here's how to fix it:
- If there is a decrease in the salinity in the pond caused by high rainfall, the farmer can add salinity water (sea water) until the salinity is in accordance with the expected salinity, checking can be done using a refractometer.
- If high salinity value caused by evaporation of water in summer, farmers can reduce salinity by adding fresh water (non-salinity) until the expected salinity value is obtained.
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It should be noted that the tolerance of shrimp to changes in salinity is only 5 ppt. Therefore, you need to check water salinity, oxygen levels, and control feeding regularly. If the water salinity of vannamei shrimp ponds fluctuates, it is certain that the vannamei shrimp will be stressed and result in mass death in your pond.
However, you don't need to worry. eFishery present to become your farming partner through the shrimp farming application, namely eFarm!
eFarm is a pond management application that provides complete solutions for various problems in your pond. One of the features that you can take advantage of is Cultivation Consultation, where you can consult with a cultivator to get the right steps for handling/maintaining ponds, including in terms of maintaining pond water salinity.
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Nabilla Anggi - Magister Budidaya Perairan
Nabilla merupakan lulusan sarjana dan magister budidaya perairan serta memiliki pengalaman di dunia perikanan baik hatchery maupun pembesaran
Questions Regarding Salinity Control of Vaname Shrimp Pond Water
Ideally, the salinity of shrimp pond water has a value of 10-35 ppt. However, the level of salinity requirements for each shrimp is different. Vaname shrimp need water with a salinity of 15-25 ppt, while tiger prawns need water with a salinity of 20-25 ppt.
The safe concentration level of ammonia in vaname shrimp is 0.1 mg/L, while the concentration level of ammonia which causes death in vannamei shrimp is <1.29 mg/L.
Farmers need to check pond water salinity regularly and immediately deal with it if there is a drastic change. If there is a decrease in the salinity in the pond caused by high rainfall, the farmer can add salinity water (sea water) until the salinity matches the expected salinity. If high salinity value caused by evaporation of water in summer, farmers can reduce salinity by adding fresh water (non-salinity) until the expected salinity value is obtained.
- Fardilla F. 2018. Ammonia Concentration in Vaname Shrimp (Litopenaeus Vannamei) Intensive Ponds Using Lactobacillus Sp. with different doses. Thesis. Department of Aquaculture, Faculty of Agriculture. Muhammadiyah University Macassar.
- Sawito. 2019. Optimization of Salinity on Growth and Survival of Vaname Shrimp Post Larvae Stadia (Litopenaeus Vannamei, Boone 1931). Thesis. Department of Aquaculture, Faculty of Agriculture. Muhammadiyah Makassar University.