不同藻类对三角帆蚌能量代谢相关指标的影响
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上海海洋大学水产与生命学院,上海海洋大学水产与生命学院,上海海洋大学水产与生命学院

基金项目:

国家自然科学基金(31202015);公益性行业(农业)科研专项(200903028);上海海洋大学博士启动基金(B-8812-11-0196)


Effects of different microalgae species on bioenergetic parameters of Hyriopsis cumingii
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Shanghai Ocean University,Shanghai Ocean University,College of Fishery and Life Science

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    摘要:

    在水温21 ℃时,测定暴露于相同密度8种不同藻类条件下,一龄三角帆蚌对藻类的同化率、排氨率和耗氧率,实验周期为24 h。结果显示,在相同密度下,三角帆蚌对硅藻的同化率最高,为 0.660±0.003;明显高于绿藻和蓝藻(0.142±0.003和0.095±0.004);摄食蓝藻的三角帆蚌排氨率和耗氧率最大,分别为(1.346±0.024) μg/(g·h)和(25.78±0.237) μg/(g·h)。摄食绿藻的排氨率最小,为(0.795±0.015) μg/(g·h),摄食硅藻的耗氧率最小,为(13.307±0.127) μg/(g·h)。耗氧率与排氨率比值(O∶N)揭示三角帆蚌摄食硅藻后,其呼吸代谢底物主要以蛋白质为主;当饵料改变为蓝藻和绿藻时,O∶N比值开始明显变高,表明其呼吸代谢底物由以蛋白质为主转变为以脂肪和蛋白质为主。蓝藻和绿藻类浮游植物对三角帆蚌具有一定的胁迫效应。

    Abstract:

    Assimilation efficiency (AE) of triangle sail mussel Hyriopsis cumingii which fed on eight species of microalgae was determined during the 24 hours trial, at 21 ℃ of water temperature. Oxygen consumption and ammonia N excretion rates of Hyriopsis cumingii were also studied in laboratory. Results showed that AE of Hyriopsis cumingii on Bacillariophyta (0.660±0.003) was higher than that on other microalgae species at the same level of algal density. The highest oxygen rates of consumption and the highest ammonia N excretion rates were found with the group fed on the Cyanophyta, which were at 1.346±0.024 μg/(g·h) and 25.78±0.237 μg/(g·h), respectively. while the lowest ammonia N excretion rate and the lowest oxygen rate were in Chlorophyta group (0.795±0.015 μg/(g·h)) and the Bacillariophyta group (13.307±0.127 μg/(g·h)) .Furthermore, the O∶N ratio revealed that protein was consumed by Hyriopsis cumingii when they fed on Bacillariophyta, while more fat and protein were consumed when fed on Cyanophyta or Chlorophyta.

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胡梦红,武 震,刘其根.不同藻类对三角帆蚌能量代谢相关指标的影响[J].上海海洋大学学报,2013,22(6):888-894.
HU Meng-hong, WU Zhen, LIU Qi-gen. Effects of different microalgae species on bioenergetic parameters of Hyriopsis cumingii[J]. Journal of Shanghai Ocean University,2013,22(6):888-894.

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  • 收稿日期:2013-04-17
  • 最后修改日期:2013-07-04
  • 录用日期:2013-09-03
  • 在线发布日期: 2013-11-07
  • 出版日期: 2013-11-15
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