1. 中国水产科学研究院东海水产研究所, 农业部海洋与河口渔业资源与生态重点开放实验室, 上海 200090;2. 上海海洋大学水产与生命学院, 上海 201306;3. 华东师范大学生命科学学院, 上海 200062
庄平(1960-), 研究员, 主要从事鱼类生态学研究. E-mail: pzhuang@online.sh.cn
国家973计划项目(2010CB429005); 国家公益性行业(农业)科研专项(200903048-07, 201203065); 中央级公益性科研院所基本科研业务费专项(东海水产研究所2011M08).
1. Key and Open Laboratory of Marine and Estuarine Fisheries Resource and Ecology, Ministry of Agriculture,East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;2. College of Fisheries and Life Science, S
(0, 6, 12, 18, 24)并研究了其呼吸熵、氧氮比、代谢率及能源物质供能比随盐度的变化情况。结果表明盐度对其耗氧率及N蛋白质的供能比例最小。分析认为
We evaluated the effect of salinity on the metabolism of female Chinese crabs (). The crabs, body weight (55.59 ± 6.24) g, were held at salinities of 0, 6, 12, 18 and 24, (16 ± 1) production, and ammonia-N excretion. Using this data, we calculated the respiratory quotient, oxygen-nitrogen ratio, energy consumption rate, and metabolic substrate ratio. Salinity had a significant effect on the oxygen consumption rate and ammonia–N excretion rate (<0.05). Between salinity 0–24, the rates of oxygen consumption and ammonia–N excretion both decreased as salinity increased. We observed a similar pattern for CO2 production and energy consumption, but the differences were not significant relative to the control group at salinity 6 >0.05). Between salinity 12–24, CO2 production and energy consumption were significantly lower than in the control group. Salinity had no effect on the respiratory quotient and oxygen–nitrogen ratio . Our results suggest that lipids are used preferentially as an energy source. Furthermore, proteins were utilized to a much greater extent than carbohydrates. The proportion of lipids in the metabolic substrate increased as salinity increased. Conversely, the carbohydrate metabolic substrate ratio decreased as salinity increasedwhereas the protein metabolic substrate ratio remained constant. At salinity 24, the ratio of protein, carbohydrate, and lipid used as metabolic substrate was 6.479.0. During the reproductive migration, the female Chinese crab migrates from fresh water into the Yangtze River estuary. Thus, individuals must adjust to the higher salinity and modify their energy metabolism. Our results suggest that energy consumption decreases after entering salt water, allowing female crabs to divert energy into reproduction.
庄平,贾小燕,冯广朋,章龙珍,王瑞芳.盐度对中华绒螯蟹雌性亲蟹代谢的影响[J].中国水产科学,2012,19(2):217-222
ZHUANG Ping, JIA Xiaoyan, FENG Guangpeng, ZHANG Longzhen, WANG Ruifang. Effect of salinity on the metabolism of female Chinese crabs, Eriocheir sinensis[J]. Journal of Fishery Sciences of China,2012,19(2):217-222
