标题：Correlation of Major Mineral Properties in Brackish Water Ponds Environment and Pacific White Shrimp Litopenaues vannamei Survival, Growth and Production
期刊名称：Journal of Environmental Science and Technology
印刷版ISSN：1994-7887
电子版ISSN：2077-2181
出版年度：2019
卷号：12
期号：1
页码：38-46
DOI：10.3923/jest.2019.38.46
出版社：Asian Network for Scientific Information
摘要：Background and Objective: The physiological status of crustacean is significantly affected not only by concentration of major minerals in water environment but also by their concentration ratios. The objective of this research was to analyze the effect of major mineral concentrations and their ratios on the production performance of Pacific white shrimp Litopenaeus vannamei . Materials and Methods: Seven commercial grow out ponds were evaluated. All ponds were filled up with coastal water diluted with fresh water from nearby creek or a river with salinities of 18.0-28.8 g L1. All ponds were stocked with Specific Pathogen Free (SPF) Post Larvae 10 (PL10) at densities of 65-128 PLs m2. Shrimp were fed with commercial feed 3-5 times a day and the shrimp growth was monitored weekly. Water samples were collected from all ponds at 1-2 weeks prior to harvest for major minerals (Cl, Na, Mg, SO4, Ca and K) analyses. Results: The results revealed that the variation of water salinities between 18.0-28.8 led to variation in major minerals concentration and their ratios. These ratios were also different to that of standard seawater at the same water salinities. Concentration of Mg in all ponds within those salinity ranges were markedly higher than that of standard diluted seawater at the same salinity and it varied from 1,858.0-5,958.2 mg L1. In contrast, concentration of Na and K in all ponds were markedly lower than those of standard seawater diluted to corresponding salinity and varied from 1,386.2-5,626.9 mg L1 for Na and from 123.4-248.7 mg L1 for K, respectively. The specific growth rate (SGR) was significantly influenced (p<0.05) by Na and K ions, while survival rate (SR) was significantly influenced by Mg ion and Na/K ratio. Conclusion: The Na and K ions were crucial for the growth, while Mg ions and Na/K ratio were crucial for survival of L. vannamei . These results implied that the concentrations of K, Na and Mg and their ratios were the most important factors than actual water salinity for efficient production of L. vannamei aquaculture.
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