Effect of different concentrations of potassium and magnesium on performance of Litopenaeus vannamei postlarvae reared in low-salinity water and a biofloc system

Citation

Zacarias S, Schveitzer R, Arantes R, Galasso H, Pinheiro I, Santo CE & Vinatea L (2019) Effect of different concentrations of potassium and magnesium on performance of Litopenaeus vannamei postlarvae reared in low-salinity water and a biofloc system. Journal of Applied Aquaculture, 31 (1), pp. 85-96. https://doi.org/10.1080/10454438.2018.1536009

Abstract
Effect of K+ and Mg2+ in water on the performance of Litopenaeus vannamei using bioflocs was evaluated. Control had water with K:Mg (1:4.57) and other treatments (K:Mg of 1:5.4, 1:4.65, and 1:3.77), both with salinity of 4 g/L. Initial mean weight of shrimp was 0.08 ± 0.007 g. No difference in shrimp growth performance and survival was observed (P > 0.05) except in the control. Our results suggest that it is possible to culture postlarvae of Litopenaeus vannamei in low-salinity water with bioflocs when the water has an initial potassium concentration of 30.90 ± 8.5 mg/L and magnesium of 167.0 ± 3.9 mg/L.

Keywords
Inland water; ionic concentration; ions; shrimp

Journal
Journal of Applied Aquaculture: Volume 31, Issue 1