Abstract：Oxygen consumption and ammonia excretion were determined by the Winkler method and the Nessler's reagent method in juvenile jellyfish Rhopilema esculenta with various sizes under different ambient illumination, pH 7.9～8.1 and salinity of 25.1. The relationship between dry weight(m)and the bell diameter(D)was found to be represented as the equation:m=0.0003 D~2-0.0007 D+0.0427, r~2=0.9913. There was a negative regression function among oxygen consumption rate(OCR), ammonia excretion rate(AER)and the bell diameter(D):OCR=0.0063 D~2-0.3531 D+6.1533, r~2=0.9751; AER=0.4221 D~2-26.585 D+518.83, r~2= 0.9587. The juvenile jellyfish had significantly greater OCR and AER under light than under darkness(P＜0.01). The OCR and AER showed a tendency to increase with the increase in water temperature. The significant increases in AER was only found in 30 ℃ group and other three groups(P＜0.01)and the significant increases in OCR were observed in the high water temperature groups except from the 20 ℃ group and the 25 ℃ group(P＜0.05). The asphyxia was found at the dissolved oxygen concentration of 0.45 mg/L for the juvenile jellyfish with bell diameter of 15 mm under light than under darkness.
收稿日期: 2010-03-25
引用本文:
宋晶,李晓东,吴垠,刘胥. 不同光照、温度及不同规格海蜇耗氧率和排氨率的测定[J]. 水产科学, 2010, 29(3): 147-151.
SONG Jing,LI Xiao-dong,WU Yin,LIU Xu. Oxygen Consumption and Ammonia Excretion in Jellyfish Rhopilema esculenta with Various Sizes under Different Illumination and Temperature. Fisheries Science, 2010, 29(3): 147-151.
