Stress response to daily temperature fluctuations in common carp, Cyprinus carpio L.
Stress response to daily temperature fluctuations in common carp, Cyprinus carpio L.
复制标题
DOI：
10.1007/s10750-011-0796-z
复制
发表时间：
2011-10-01
期刊：
影响因子：
2.6
通讯作者：
Kawabata, Zen'ichiro
中科院分区：
文献类型：
--
作者：
Takahara, Teruhiko;Yamanaka, Hiroki;Kawabata, Zen'ichiro
湖泊和泻湖的沿岸地带经常被鱼类用来觅食或繁殖。然而，包括沿海地区在内的典型自然环境中温度的巨大变化，对鱼类来说是一个潜在的压力源。尽管这个栖息地很重要，但人们对每日温度波动对鱼类应激反应的影响知之甚少。我们在2008年5月至2010年7月期间监测了一个天然泻湖近岸和近海区域的每日温度变化。我们观察到近岸区比近海区更频繁地出现较大的温度波动。然后，我们将鲤鱼（Cyprinus carpio）暴露在与近岸地区观察到的温度相似的环境中，并测量释放到水中的皮质醇水平。当鲤鱼暴露在0.6摄氏度/小时的温度下，持续5小时，皮质醇的释放率增加。相反，当温度降低时，释放速率没有变化。我们的研究结果强调了在评估对每日温度波动的应激反应时保持高时间分辨率的重要性。
The littoral zone of lakes and lagoons is often used by fish for feeding or reproduction. However, the large changes in temperature that are typical of natural environments, including the littoral zone, represent a potential stressor for fish. Despite the importance of this habitat, little is known about the effect of daily temperature fluctuations on the stress responses of fish. We monitored daily temperature changes in the near-shore and offshore regions of a natural lagoon between May and July 2008-2010. We observed large temperature fluctuations more frequently in the near-shore zone than the offshore zone. We then exposed common carp (Cyprinus carpio) to a temperature regime similar to that observed in the near-shore zone and measured the levels of cortisol released into the water. The rate of cortisol release increased when carp were exposed to an increase in temperature of similar to 0.6A degrees C/h over a 5-h period. Conversely, there was no change in the rate of release when temperatures decreased. Our results highlight the importance of maintaining high temporal resolution when evaluating the stress response to daily fluctuations temperature.