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《Journal of Dalian Fisheries University》 2009-05
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The influence of different diets on growth performance in moon jellyfish Aurelia aurita

WANG Wen-long1,LENG Xiang-jun1,LIU Huang2 (1.College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;2.Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200092,China)  
Moon jellyfish Aurelia aurita with initial umbrella diameter of(2.50± 0.10)cm were fed nauplii of Artemia,frozen Atemia,freeze dried Atemia,Chinese microdiet and microdiet abroad for one month to evaluate the influence of the diets above on growth performance in the moon jellyfish.The moon jellyfish fed the Chinese microdiet had survival rate of 95%,whereas the moon jellyfish fed the other diets had survival rate of 100%.The moon jellyfish fed the nauplii of Artemia showed the best growth performance,the umbrella diameter(5.01 cm±0.10 cm) being significant higher than the animals fed other diets(P0.05),followed by the moon jellyfish fed the frozen Atemia(4.78 cm±0.20 cm in umbrella diameter) or freeze dried Atemia(4.62 cm±0.11 cm in umbrella diameter).The least growth was observed in the moon jellyfish fed the Chinese microdiet(4.42 cm±0.06 cm in umbrella diameter).The highest constraction frequency(1/second) was found in the moon jellyfish fed the nauplii of Artemia,significantly higher than those in the other groups(0.5-0.66/second)(P 0.05) without significant difference.The water quality of the frozen Atemia group was the worst,the average concentration of TNH3-N,NO-2-N and NO-3-N being significantly higher than those in the other groups(P 0.05),followed by the microdiet group,significantly higher than those in the other groups(P0.05),indicating that nauplii were the best food for moon jellyfish.The frozen Atemia and freeze dried Atemia were also suggested to be used as food for moon jellyfish.The Chinese microdiet was not considered to be suitable for moon jellyfish due to its poor nutrition,low water stability and suspension.
【CateGory Index】: S963.73
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