中文摘要：

【目的】意大利蝗Calliptamus italicus L.是新疆荒漠、半荒漠草原的主要危害种类，前期研究表明其发生与新疆气候变暖显著相关，本研究进一步探讨气候变暖条件下意大利蝗的呼吸代谢适应机制。【方法】应用多通道昆虫呼吸仪测定了15， 20， 25， 30和35℃不同温度条件下意大利蝗成虫的呼吸率、代谢率、CO2释放率、Q10（每升高10℃呼吸率的变化幅度）及呼吸商并分析其变化特征。【结果】15℃时意大利蝗成虫的呼吸率、代谢率、CO2释放率均显著低于其他温度（P〈0.01）， 35℃时3项指标值显著高于其他温度（P〈0.01），表明低于15℃和高于35℃的温度条件都对意大利蝗的呼吸代谢产生明显影响；在20～30℃之间，意大利蝗的呼吸率、代谢率及CO2释放率变化幅度小且平稳，差异均不显著（P〉0.01），表明该温度范围是意大利蝗生长发育的适宜温度条件。不同温度下意大利蝗呼吸率的Q10值显示， 20～30℃温度范围内的 Q10值最小，为1.03， 15～25℃的Q10值为1.43， 25～35℃的Q10值最大，为2.42，说明意大利蝗的呼吸代谢活动对温度变化敏感，并表明20～30℃是意大利蝗生长发育的适宜范围。各温度条件下意大利蝗呼吸商的差异不显著（P〉0.01），平均为0.9450，判断意大利蝗呼吸代谢消耗的底物主要为糖类物质。【结论】意大利蝗生长发育的适宜温度范围是20～30℃，预示着在气候持续变暖背景下，意大利蝗仍将是新疆草原最重要的生物灾害之一。

英文摘要：

【Aim】 Calliptamus italicus is a serious plague in arid and semiarid grasslands of Xinjiang. Previous studies claimed that its outbreak is closely related to climate warming in Xinjiang since 1980s. This research aimed to explore the effect of temperature increasing on the respiratory metabolism of C. italicus.【Methods】 We detected the respiratory rate, metabolic rate, CO2 release rate, Q10 （rangeability of the respiratory rate per 10℃ rising） and the respiratory quotient of C. italicus adults by using Sable Systems at different temperatures （15, 20, 25, 30 and 35℃）. 【Results】 The respiratory rate, metabolic rate and CO2 release rate of the locust all increased as the temperature went up, with the values at 15℃ significantly lower than at the other temperatures （P〈0.01）, but significantly higher at 35℃ （P〈0.01）, suggesting that both the conditions below 15℃ and over 35℃ have significant impacts on C. italicus. However, the respiratory rate, metabolic rate and CO2 release rate measured between 20℃ and 30℃ were not significantly different （P〉0.01）, revealing that this temperature range is suitable for C. italicus development. The values of respiratory rate （Q10） at different temperatures showed that C. italicus is sensitive to temperature change. The Q10 value reached the maximum （2.42） when the temperature ranged from 25℃ to 35℃, and the minimum （1.03） from 20℃ to 30℃, suggesting that the temperature ranging from 20℃ to 30℃ is the optimal condition for C. italicus development. With an average of 0.9450, the respiratory quotient has no significant difference among different temperature treatments （P〉0.01）, suggesting that carbohydrates are consumed during respiration. 【Conclusion】 Temperature between 20℃ and 30℃ is suitable for growth and development of C. italicus, and the continuing warming would still make C. italicus as one of the important pests in Xinjiang grasslands.