The respiration, excretion and biochemical response of the juvenile common Chinese cuttlefish, Sepiella maindroni at different temperatures
文献类型: 外文期刊
第一作者: Yin, Fei
作者: Yin, Fei;Sun, Peng;Peng, Shiming;Tang, Baojun;Zhang, Dong;Shi, Zhaohong;Wang, Chunlin;Mu, Changkao
作者机构:
关键词: Sepiella maindroni;Temperature;Oxygen consumption;Ammonia-N excretion;Superoxide dismutase;Na+;K+-ATPase
期刊名称:AQUACULTURE ( 影响因子:4.242; 五年影响因子:4.723 )
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收录情况: SCI
摘要: The present study was designed to measure the oxygen consumption, ammonia excretion, stress resistance, energy utilization, and osmoregulatory ability of cuttlefish Sepiella maindroni, an important cultured species of China, at different temperatures. Juvenile cuttlefish were exposed to temperatures of 16, 20, 24, 28, and 32 degrees C for 10 days, respectively. Oxygen consumption (R) rates increased significantly from 16 to 28 degrees C and then, slightly decreased at 32 degrees C (P < 0.05). Ammonia excretion (U) rates increased with increasing temperature. The highest R Q(10) and U Q(10) values occurred within 16 and 20 degrees C, and the intermediate R Q(10) and U Q(10) values were found within 24 and 28 degrees C. The calculated R Q(10) dropped to minimum values within 28 and 32 degrees C which suggested that treated groups with temperature of 32 degrees C were under a stressful situation. The suffocation point (SP) and SP/SD (suffocation duration) increased significantly with increasing temperature, and peaked at 28 degrees C, then dropped to the minimum level at 32 degrees C. The SD decreased significantly with increasing temperature. The hemolymph total protein concentration decreased significantly from 16 to 24 degrees C and then increased significantly, reaching a maximum at 32 degrees C. Hepatic superoxide dismutase (SOD) activity was significantly low at 32 degrees C than that of at other temperatures. The lowest and highest branchial Na+, K+-ATPase activity, and Na+ and Cl- contents occurred at 24 and 28 degrees C, respectively. The present results indicate that temperature can modify certain physiological parameters and by enhancing oxygen utilization, optimal temperatures significantly contribute to higher growth rates. It is suggested that the protein increase in the hemoglobin below and above 24 degrees C, will lead to an increase of energy expenditure from protein as an adjustment to temperature changes. Moreover, extremely high temperatures may result in adverse effects on juvenile S. maindroni that are related to ammonia-N and oxidative stress
分类号: S9
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