Predicting the possibility of severe effects of global warming on animals is important for understanding the ecological consequences of climate change on ecosystem. Spring is the season during which birds have to physiologically prepare for the subsequent breeding period, and unusual spring temperature rising probably becomes a heat stress to the birds which have adapted to the low spring temperature. Therefore, it is necessary to understand the physiological effect of spring warming on the temperate birds. Using the activities of blood anti-oxidative enzymes (SOD, CAT, GPx) and the concentrations of serum immunogloblins (IgA, IgY, IgM) as indicators, we compared the anti-oxidative and immune functions of Asian Short-toed Larks (Calandrella cheleensis) captured between 10 and 15 March, 2015 and housed under conditions of 21 °C and 16 °C. The SOD activities of birds in 21 °C group were significantly lower than those in 16 °C group on all the treatment days. The CAT activities of the birds in 21 °C group were significantly lower than those in 16 °C group on the 1st, 5th, 13th, 17 treatment days. The GPx activities of the birds in 21 °C group were signifthicantly lower than those in 16 °C group on the 1st, 13th and 17th, but significantly higher on the 21st treatment day. The IgA, IgY and IgM concentrations of birds in 21 °C group were significantly lower than those in 16 °C group on all the treatment days. This study shows that spring temperature rising negatively influences antioxibative and humoral immune functions, which indicates that spring climate warming might reduce the fitness of the temperate passerine birds which have adapted to the low spring temperature.

中文翻译：

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春季温和温升会影响亚洲短脚云雀的抗氧化和免疫功能

预测全球变暖对动物造成严重影响的可能性，对于理解气候变化对生态系统的生态影响非常重要。春季是鸟类必须为随后的繁殖期进行生理准备的季节，异常的春季温度升高可能会成为适应低春季温度的鸟类的热应激。因此，有必要了解春季变暖对温带鸟类的生理影响。以血液中的抗氧化酶（SOD，CAT，GPx）的活性和血清免疫球蛋白（IgA，IgY，IgM）的浓度为指标，我们比较了亚洲短趾云雀（Calandrella cheleensis）的抗氧化和免疫功能。 ）于2015年3月10日至15日捕获，并置于21°C和16°C的条件下。在所有治疗日中，21°C组的鸟类的SOD活性均明显低于16°C组的鸟类。在治疗的第1、5、13、17天，21°C组家禽的CAT活性明显低于16°C组。在第1、13、17日，21°C组鸡的GPx活性显着低于16°C组，但在第21天治疗时显着升高。在所有治疗日中，21°C组禽的IgA，IgY和IgM浓度均明显低于16°C组。这项研究表明，春季温度升高会对抗氧化和体液免疫功能产生负面影响，这表明春季气候变暖可能会降低适应低春季温度的温带雀形目鸟类的适应能力。