摘要
通过室内饲养实验研究了在高CO2 浓度 ( 738 8± 2 5 7μL L)中生长的小麦对棉铃虫Helicoverpaarmigera (H櫣ｂｎｅｒ)生长发育 ,繁殖以及营养效应的影响。结果表明 :( 1 )取食高CO2 浓度大气中生长的麦粒的棉铃虫对食料的取食量和粪便排泄量增加 ,与对照相比 ,取食量和粪便排泄量分别增加 4 6 3% (P <0 0 5 )和 37 8% ;( 2 )大气CO2 浓度增加影响了麦粒中的营养成分的含量 ,其中 ,可溶性蛋白、游离氨基酸、葡萄糖和总糖的含量及碳氮比 (C∶N)都显著增加 ,果糖和粗蛋白的含量都显著降低 ;( 3)大气CO2 浓度升高所导致的麦粒营养成分的变化影响了棉铃虫幼虫的食物利用效率 ,与对照组相比 ,棉铃虫幼虫对食物的毛转化率和净转化率分别降低 2 7 2 %和 2 5 4 % ,对食物的相对取食率则显著提高 5 8 8% (P <0 0 1 )。据此推测 ,未来高CO2 浓度的大气环境会降低春小麦的营养价值 ,从而影响棉铃虫的生长发育 。
Impacts of the rising CO-2 concentration atmosphere on growth, development, reproduction and nutritional efficiency of the cotton bollworm Helicoverpa armigera (Hübner) reared on spring wheat in the cotton region of Northern China were studied through laboratory experiment with collected milky grains (as diets) from spring wheat grown in 370 μL/L CO-2 treatment (factually 382.4±24.8) and 750 μL/L CO-2 treatment (factually 738.8±25.7) in open-top chambers. The results indicated: (1) As reared on grains of elevated CO-2-grown spring wheat, the larvae of cotton bollworm fed more grains and produced more frass. Compared with CK, food ingestion and frass produced by bollworm larvae increased by 46.3% (P<0.05) and 37.8% respectively. (2) Elevated CO-2 affected the nutritional constitutes of grains. Significant increases were found in soluble protein, free amino acids, glucose, amylase, TSCs and ratio of TSCs: GP (gross protein) and significant decreases in fructose and gross protein compared to CK. (3) The changes in grain nutritional constitutes owing to elevated CO-2 influenced the diet-utilization efficiency of bollworm larvae. Decreases were found in efficiency of conversation of ingested food (ECI) and digested food (ECD) of bollworm larvae fed on grains of elevated CO-2-grown spring wheat by 27.2% and 25.4% respectively, and significant (P<0.05) increase in relative consumption rate (RCR) by 58.8% compared with those of larvae fed on grains of ambient CO-2-grown spring wheat. So elevated CO-2 may cause adverse impacts on nutritional values of milky grains for the development and growth of cotton bollworm, H. armigera, and the larvae may consume more wheat grains and cause in heavier damage in the rising CO-2 concentration atmosphere in future.
出处
《昆虫学报》
CAS
CSCD
北大核心
2004年第6期774-779,共6页
Acta Entomologica Sinica
基金
国家重点基础发展规划 (973)项目 (G2 0 0 0 0 1 6 2 0 9)
中国科学院知识创新工程方向性项目 (KSCX2 0 1 0 2
KSCX2 sw 1 0 3)
中国科学院知识创新前沿项目 (KSCX3 IOZ 0 4)
关键词
棉铃虫
CO2
春小麦
生长
发育
繁殖
营养效应
Helicoverpa armigera
CO-2
spring wheat
growth
development
reproduction
nutritional efficiency
