摄食和短期饥饿对革胡子鲇热耐受和低氧耐受能力的影响

doi:10.13292/j.1000-4890.202505.002

生态学杂志 ›› 2025, Vol. 44 ›› Issue (5): 1518-1524.doi: 10.13292/j.1000-4890.202505.002

摄食和短期饥饿对革胡子鲇热耐受和低氧耐受能力的影响

向平,张永飞,黄可人,付世建^*

（重庆师范大学进化生理与行为学实验室，淡水鱼类资源保护与利用重庆市重点实验室，动物生物学重庆市高校重点实验室，重庆 401331）

出版日期:2025-06-10 发布日期:2025-05-12

The effects of feeding and short-term starvation on the thermal and hypoxia tolerance of Clarias gariepinus.

XIANG Ping, ZHANG Yongfei, HUANG Keren, FU Shijian*

(Laboratory of Evolutionary Physiology and Behavior, Chongqing Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, Chongqing Normal University, Chongqing 401331, China).

Online:2025-06-10 Published:2025-05-12

摘要/Abstract

摘要： 为探讨摄食和短期饥饿对革胡子鲇（Clarias gariepinus）热耐受和低氧耐受能力的影响，在25 ℃条件下，分别测定摄食对照组、摄食组、饥饿对照组和饥饿组实验鱼的热耐受（临界高温CT_max，临界低温CT_min，致死高温LT_max和致死低温LT_min）指标以及低氧耐受（临界氧压P_crit，失衡点LOE）指标，并计算临界代谢率（MR_pcrit）和边际代谢率（MR_LOE）指标。结果表明：摄食后实验鱼的CT_max和LT_max均显著降低，P_crit和MR_pcrit均显著升高（P<0.05），CT_min、LT_min、LOE和MR_LOE无显著变化；饥饿后实验鱼的CT_max、LT_max和LT_min均显著降低，LOE则显著升高（P<0.05），CT_min、P_crit、MR_p_crit和MR_LOE无显著变化；摄食消化和短期饥饿胁迫在一定程度上削弱了革胡子鲇的高温耐受和低氧耐受能力，短期饥饿后其低温耐受能力增强，这与摄食消化和饥饿状态下革胡子鲇代谢率的变化及部分生理活动的调整有关。

关键词: 消化, 短期饥饿, 热耐受, 低氧耐受, 革胡子鲇

Abstract: To investigate the effects of feeding and short-term starvation on the thermal and hypoxia tolerance of Clarias gariepinus, the critical temperature (CT_max and CT_min), lethal temperature (LT_max and LT_min), critical oxygen pressure (P_crit) and the loss of equilibrium (LOE) of experimental fish were measured at 25 ℃. The critical metabolic rate (MR_p_crit) and marginal metabolic rate (MR_LOE) were calculated. The results showed that both CT_max and LT_max decreased significantly, whereas both P_crit and MR_p_crit increased significantly after feeding (P<0.05). The CT_min, LT_min, LOE, and MR_LOE showed no variation between the feeding group and feeding control group. In addition, CT_max, LT_max and LT_min decreased significantly after starvation (P<0.05), while LOE was higher in starvation group than that in starvation control group (P<0.05). There was no significant difference in CT_min, P_crit, MR_p_crit, and MR_LOE between the starvation group and starvation control group. These results suggest that the heat and hypoxia tolerance of Clarias gariepinus were weakened by feeding digestion and short-term starvation stress, and that cold tolerance was enhanced after short-term starvation, which is related to the changes in metabolic rate and adjustments in some physiological functions of Clarias gariepinus during feeding digestion and starvation.

Key words: digestion, short-term starvation, thermal tolerance, hypoxia tolerance, Clarias gariepinus

向平, 张永飞, 黄可人, 付世建. 摄食和短期饥饿对革胡子鲇热耐受和低氧耐受能力的影响[J]. 生态学杂志, 2025, 44(5): 1518-1524.

XIANG Ping, ZHANG Yongfei, HUANG Keren, FU Shijian. The effects of feeding and short-term starvation on the thermal and hypoxia tolerance of Clarias gariepinus.[J]. Chinese Journal of Ecology, 2025, 44(5): 1518-1524.

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摄食和短期饥饿对革胡子鲇热耐受和低氧耐受能力的影响

The effects of feeding and short-term starvation on the thermal and hypoxia tolerance of Clarias gariepinus.

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