Effects of elevated CO2 on survival, growth, digestive enzymes and glucose concentration of white leg shrimp (Litopenaeus vannamei Boone, 1931) from postlarvae 15 to juvenile stage (in Vietnamese)

This study was carried out to determine the effects of CO2 on survival, growth, digestive enzyme activity and glucose concentration of white leg shrimp from 15-day postlarvae to juvenile stage. The study was designed using a completely randomized with 4-CO2 treatments including 2.32, 7.81, 19.0 and 45.6 mg/L equal to pH of 8.1, 7.6, 7.2 and 6.8, respectively. Postlarvae of 0.019 g and 1.20 cm length were stocked at the density of 100 ind./200-L tank. After 45 days, the survival rate of shrimp in control treatment (2.32 mg/L CO2 or pH=8.1) was 70.0%, and the lowest survival rate occurred in the CO2 treatment of 45.6 mg/L (28.3%). The lowest final individual weight and length in CO2 concentration of 45.6 mg/L were 1.09 g and 4.69 cm. The lowest enzyme activities were in CO2 treatment of 45.6 mg/L. Glucose concentration was highest in 37.5 mg/100 mL. The high CO2 concentration will adversely affect growth, survival rate, reduce some digestive enzymes and increase glucose concentration in hemolymph of white leg shrimp.

Bước Đ. V., Nguyễn Thanh Phương N. T., Hải T. N., Hương Đ. T. H., Tảo C. T. & Ishimatsu A., 2019. Effects of elevated CO2 on survival, growth, digestive enzymes and glucose concentration of white leg shrimp (Litopenaeus vannamei Boone, 1931) from postlarvae 15 to juvenile stage (in Vietnamese). Science magazine of Can Tho University 55 (3B): 58-66. Article.

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