The effects of starvation and refeeding on metabolism in shrimp （ Marspenaeus japonicus）
WU Li-xin, LIU Yu, WANG Xin, DENG Hong-xiang
1. Key Laboratory of Hydrobiology in Liaoning Province＇s Universities, Dalian Fisheries Univ. , Dalian 116023, China; 2. Fujian Province Ocean Environment and Fishery Resources Monitoring Center, Fuzhou 350003, China
Abstract: The effects of prolonged starvation and subsequent refeeding on metabolism in shrimp Marspenaeus japonicus with initial weights of （5.42 ±0.68） g were investigated under （22 ±0.5）℃ during July 18 to August 17, 2005. The shrimp starved for 30 days when half shrimp died had oxygen consumption rate and ammonia - N excretion rate as small as 24. 15% ,and 50% of those fed shrimps, respectively. There were four phases during the course of oxygen consumption and ammonia - N excretion reduction. The oxygen consumption curve was“sharp decrease - stability - regained stability - slightly increase” in the course. The changes in ammonia- N excretion experienced four phases “sharp decrease - ascend - decrease - increased dramatically”. Protein and lipid were the first energy sources before 14 days starvation and from day 14 to day 30, protein was the only energy source. Two groups of the shrimps were starved for 7 and 14 days and both refed 2 and 6 days. During the refed period, the oxygen consumption rate and the ratio of O： N were significantly elevated compared to starvation period.
吴立新, 刘瑜, 王欣, 邓宏相. 饥饿和再投喂对日本囊对虾代谢率的影响[J]. 大连海洋大学学报, 2007, 22(2): 109-112.
WU Li-xin, LIU Yu, WANG Xin, DENG Hong-xiang. The effects of starvation and refeeding on metabolism in shrimp （ Marspenaeus japonicus）. Journal of Dalian Ocean University, 2007, 22(2): 109-112.
2007, Vol. 22 
