• 研究报告 •

体质量和水温对太湖秀丽白虾人工驯养子代耗氧率和排氨率的影响

1. 农业部长江下游渔业资源环境重点野外科学观测试验站, 中国水产科学研究院内陆渔业生态环境和资源重点开放实验室,中国水产科学研究院淡水渔业研究中心,江苏无锡 214081
• 出版日期:2010-05-10 发布日期:2010-05-10

Effects of water temperature and body mass on oxygen consumption and ammonia excretion of artificially domesticated Exopalaemon modestus offspring in Taihu Lake.

LIU Kai;XU Dong-po;DUAN Jin-rong;ZHANG Min-ying, SHI Wei-gang

1. Key Field Station of Observation and Research for Fishery Resources and Environment of the Lower Reaches of Yangtze River, Ministry of Agriculture|Key Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
• Online:2010-05-10 Published:2010-05-10

Abstract: Taking the artificially domesticated Exopalaemon modestus offspring from Taihu Lake as test objects, this paper studied the effects of water temperature and their body mass on their oxygen consumption and ammonia excretion. The water temperature ranged from 12 ℃ to 30 ℃, and the body mass ranged from (0.12±0.01) g to (1.93±0.05) g. The oxygen consumption rate of the offspringwas from 0.1497 to 0.9053 mg·g-1·h-1, averaged 0.3901 mg·g-1·h-1; and the ammonia excretion rate was from 0.0165 to 0.0866 mg·g-1·h-1, averaged 0.0379 mg·g-1·h-1. Water temperature, body mass, and their interaction had significant effects on the oxygen consumption and ammonia excretion. The relationships of oxygen consumption and ammonia excretion rates with water temperature could be described as Ro=0.0711e0.0749t (r=0.877) and Rn=0.0113e0.0530t (r=0.747), and the relationships of the two metabolic rates with body mass could be described as Ro=0.3114W-0.2414 (r=-0.436) and Rn=0.0307W-0.3007 (r=-0.657), respectively. The binary linear regression equations of water temperature and body mass with the two metabolic rates could be expressed as Ro=0.028T-0.147W-0.053 (r=0.948) and Rn=0.002T-0.017W+0.013 (r=0.922). The Q10 value of oxygen consumption rate ranged from 1.17 to 4.20, with an average of 2.10, and the Q10 value of ammonia excretion rate ranged from 1.15 to 2.29, with an average of 1.64. Within the range of test water temperature, the ratio of consumed oxygen to excreted ammonia for each class of body mass increased with increasing water temperature, being from 7.42 to 13.62 and averaged 10.04. At the water temperature from 12 ℃ to 18 ℃, the offspring took protein as their major energy source; while at the water temperature from 21 ℃ to 30 ℃, the offspring utilized more fat, and the medium-sized individuals had the highest fat metabolic rate.