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饥饿对南方鲇和草鱼的生长及能量代谢的影响

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夏媛香,邱汉勋,闫玉莲. 饥饿对南方鲇和草鱼的生长及能量代谢的影响[J]. 西南师范大学学报(自然科学版), 2018, 43(6): 102-109. doi: 10.13718/j.cnki.xsxb.2018.06.017
引用本文: 夏媛香,邱汉勋,闫玉莲. 饥饿对南方鲇和草鱼的生长及能量代谢的影响[J]. 西南师范大学学报(自然科学版), 2018, 43(6): 102-109. doi: 10.13718/j.cnki.xsxb.2018.06.017
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XIA Yuan-xiang, QIU Han-xun, YAN Yu-lian. On Effects of Starvation on Growth Performance and Energetic Metabolism in Silurus Meridionalis and Ctenopharyngodon Idellus[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(6): 102-109. doi: 10.13718/j.cnki.xsxb.2018.06.017
Citation: XIA Yuan-xiang, QIU Han-xun, YAN Yu-lian. On Effects of Starvation on Growth Performance and Energetic Metabolism in Silurus Meridionalis and Ctenopharyngodon Idellus[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(6): 102-109. doi: 10.13718/j.cnki.xsxb.2018.06.017
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饥饿对南方鲇和草鱼的生长及能量代谢的影响

  • 西南大学 生命科学学院 水生生物及水环境研究所/淡水鱼类资源与生殖发育教育部重点实验室, 重庆 400715

On Effects of Starvation on Growth Performance and Energetic Metabolism in Silurus Meridionalis and Ctenopharyngodon Idellus

  • Key Laboratory of Freshwater Fish Reproduction and Development, Institute of Hydrobiology and Water Environment, School of Life Sciences, Southwest University of Education Ministry, Chongqing 400715, China

  • 摘要: 以南方鲇（Silurus meridionalis）和草鱼（Ctenopharyngodon idellus）为对象，在（27.5±0.5）℃条件下，分别饥饿0 d，3 d，7 d，14 d，21 d和28 d，观察各实验处理对鱼体的生长及能量代谢的影响.研究发现：在饥饿28 d后，2种鱼的体质量、体长无显著变化，但各自的肥满度和肝器官指数均显著降低（pp<0.05），且随饥饿时间的延长呈直线下降的趋势；而南方鲇的RMR则呈先上升再下降的趋势.2种鱼的特定体质量生长率（SGR）在饥饿进程中均呈负增长，南方鲇和草鱼的各线粒体状态3呼吸率和细胞色素C氧化酶活性随饥饿时间延长均表现出了不同的变化的趋势.以上结果表明，南方鲇和草鱼应对饥饿胁迫的生理生态学机制存在组织特异性和物种特异性.通过讨论提出，由于南方鲇与草鱼为不同的营养类型，尤其是捕食行为模式各异，因此进化出不同的适应饥饿胁迫的能量生态对策.
    Abstract: The growth performance and energy metabolism of the juvenile southern catfish (Silurus meridionalis) and juvenile grass carp (Ctenopharyngodon idellus) in six different groups which were deprived of feed for 0, 3, 7, 14, 21, 28 days were observed at 27.5±0.5℃, respectively. As expected, starvation resulted in cessation of growth and there was no significant difference in body weight and body length of the starved fish for 28 days compared to their initial condition for both species. However, condition factor and hepatosomatic index (HSI) of two species were found to be significantly lower after a 28-day period of food deprivation (pp<0.05), and its RMR decreased with the increasing starvation time. RMR of southern catfish increased at initial starvation for 7 days, and then decreased until the end of starvation for 28 days. The specific weight growth rates (SGR) of the two species presented negative during deprivation. During each deprivation period the differences between SGRs of the two species were insignificant. State 3 respiration rates and activity of cytochrome C oxidas of mitochondria in southern catfish and grass carp have different changes with increasing starvation period. The results indicated that the ecophysiological mechanisms in response to starvation for southern catfish and grass carp should be tissue-specific and species-specific, it is concluded that southern catfish and grass carp with different feeding habits and different patterns in predatory behavior, so they have evolved the different ecological strategies in energy metabolism to adapt starvation stress. The results of this study support the view that the carnivorous fish is more tolerant to starvation than herbivorous fish.
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  • 收稿日期:  2018-01-21

饥饿对南方鲇和草鱼的生长及能量代谢的影响

  • 西南大学 生命科学学院 水生生物及水环境研究所/淡水鱼类资源与生殖发育教育部重点实验室, 重庆 400715
  • 收稿日期:  2018-01-21

摘要: 以南方鲇（Silurus meridionalis）和草鱼（Ctenopharyngodon idellus）为对象，在（27.5±0.5）℃条件下，分别饥饿0 d，3 d，7 d，14 d，21 d和28 d，观察各实验处理对鱼体的生长及能量代谢的影响.研究发现：在饥饿28 d后，2种鱼的体质量、体长无显著变化，但各自的肥满度和肝器官指数均显著降低（pp<0.05），且随饥饿时间的延长呈直线下降的趋势；而南方鲇的RMR则呈先上升再下降的趋势.2种鱼的特定体质量生长率（SGR）在饥饿进程中均呈负增长，南方鲇和草鱼的各线粒体状态3呼吸率和细胞色素C氧化酶活性随饥饿时间延长均表现出了不同的变化的趋势.以上结果表明，南方鲇和草鱼应对饥饿胁迫的生理生态学机制存在组织特异性和物种特异性.通过讨论提出，由于南方鲇与草鱼为不同的营养类型，尤其是捕食行为模式各异，因此进化出不同的适应饥饿胁迫的能量生态对策.

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