中文摘要：

【目的】分析饥饿胁迫下麦长管蚜Sitobion avenae（Fabricius）的能量物质含量变化,以期从生理生化角度为蚜虫饥饿胁迫下的能量适应机制提供依据。【方法】以取食小麦苗的麦长管蚜为对照,测定饥饿胁迫下麦长管蚜有翅成蚜的鲜重、干重、含水量、可溶性糖、糖原、总脂和可溶性蛋白质含量变化,通过这些不同生化物质含量之间的相关关系,分析饥饿胁迫下麦长管蚜的能量代谢特点。【结果】麦长管蚜饥饿组鲜重和干重均低于羽化后同一时间取食个体,前者范围分别为5.30-8.73和1.67-3.10 mg/20头,后者分别为7.93-8.73和2.53-3.10 mg/20头;饥饿组和取食组含水量范围分别为63.16%-71.76%和63.25%-67.32%,除羽化后1 d外,饥饿组含水量均高于羽化后同一时间取食个体;饥饿组可溶性糖、糖原、总脂和可溶性蛋白质的含量分别在6.60-11.21,0.35-10.81,18.28-30.42和12.77-33.44μg/mg鲜重之间,均低于羽化后同一时间取食个体（分别为7.53-11.21,3.66-10.81,27.53-33.63和21.54-34.43μg/mg鲜重）。饥饿3 d恢复取食后1 d,鲜重、干重、含水量和糖原含量均增加,而可溶性糖、总脂和可溶性蛋白质的含量均降低。相关分析表明,饥饿组可溶性糖与糖原、总脂或者可溶性蛋白质的含量以及可溶性蛋白质与糖原或者总脂的含量存在正相关关系。【结论】饥饿胁迫下麦长管蚜的代谢变化与其糖原、总脂和可溶性蛋白质含量降低有密切关系,通过能量物质的综合利用来适应短期饥饿胁迫。

英文摘要：

【Aim】This study aims to analyze the contents of biochemical substances used as energy sources in the English grain aphid,Sitobion avenae（ Fabricius） to provide a foundation for future biochemical and physiological studies of its energy adaptation to starvation stress. 【Methods】With the aphids fed on wheat seedlings as the control,the fresh body weight,dry body weight,and the contents of water,soluble sugars,glycogen,total lipids,and soluble proteins in alate S. avenae adults under starvation stress were measured,and the changes of energetic metabolism were analyzed by correlations between the contents of various biochemical substances. 【Results】The fresh body weight（ 5. 30- 8. 73 mg /20 individuals） and dry body weight（ 1. 67- 3. 10 mg /20 individuals） of alate S. avenae adults in the starvation group were lower than those in the feeding group（ 7. 93- 8. 73 and 2. 53- 3. 10 mg /20 individuals,respectively） at the same day after emergence. The water contents in the starvation and feeding groups were 63. 16%- 71. 76% and 63. 25%- 67. 32%,respectively. Except for the 1 st day after emergence,the starved aphids had higher water content than the feeding aphids at the same day after emergence. The contents of soluble sugars,glycogen,total lipids,and soluble proteins in the starvation group were 6. 60- 11. 21,0. 35- 10. 81,18. 28- 30. 42,and 12. 77- 33. 44 μg / mg fresh body weight,respectively,which were lower than those in the feeding group at the same day after emergence（ 7. 53- 11. 21,3. 66- 10. 81,27. 53- 33. 63,and 21. 54- 34. 43 μg / mg fresh body weight,respectively）. After newly emerged aphids were starved for 3 d,their fresh body weight,dry body weight,and the contents of water and glycogen increased,whereas their contents of total lipids and soluble proteins decreased on the 1st day after resuming feeding. There was a positive correlation between the content of soluble sugars and the content of glycogen,total lipids,or soluble proteins as well as between the content of solubl