摘要
为探究CO_2含量升高对莲草直胸跳甲种群生长发育和种群繁殖能力的间接影响,建立了取食不同CO_2含量(420、750μL·L^(-1))条件下生长的空心莲子草的莲草直胸跳甲F5代种群两性生命表。结果表明,随着CO_2含量的增加,取食相应环境中生长的空心莲子草的莲草直胸跳甲的发育历期缩短、产卵期延长、产卵量增加,说明CO_2含量增加间接有利于莲草直胸跳甲的繁殖力。而同CO_2含量(420μL·L^(-1))条件下,F5代的产卵期和产卵量均少于F1代,发育历期延长,说明实验室条件下随着世代积累,莲草直胸跳甲种群繁殖力下降。420μL·L^(-1) CO_2含量下,莲草直胸跳甲F5代种群的净增值率(R_0)和内禀增长率(r)低于F1代;而750μL·L^(-1) F5代莲草直胸跳甲种群的净增值率和内禀增长率低于420μL·L^(-1) CO_2含量的F1代,但高于420μL·L^(-1) CO_2含量的F5代;周限增长率(λ)、平均世代周期(T)均无显著差异;高含量可育雌雄比率高于低含量且差异显著。上述结果表明,取食高CO_2含量环境下生长的空心莲子草增加了莲草直胸跳甲F5代种群的繁殖能力,间接对莲草直胸跳甲的生长发育产生了积极影响。
To understand the indirect effects of elevated CO2 concentrations on the growth,development and population reproduction of A.hygrophila, Age-stage two-sex life table of A.hygrophila feeding on A.philoxeroides grown in different CO2 concentrations were constructed.The results showed that,as the CO2 concentration increasing,the development duration was shortened,the oviposition period was lengthened,and the fecundity increased of A.hygrophilafeeding on A.philoxeroides grown in correspond CO2 environment.So it＇s indirectly beneficial for the fecundity of A.hygrophila.In the same CO2 concentration（420μL·L^-1）condition,the oviposition period and the fecundity of F5 were less than those of F1,but the development duration was lengthened.This indicated that the fecundity of A.hygrophila was declined with generation development under laboratory conditions.In the 420μL·L^-1 CO2 concentration condition,the net reproductive rate（R0）,intrinsic rate of increase（r）of F5 were less than F1,and the R0 and r of F5 in 750μL·L^-1 CO2 concentration condition were also less than F1,but higher than that of F5 in 420μL·L^-1 CO2 concentration.The finite rate of increase（λ）and mean generation time（T）had no significant differences.The fertile female ratio at higher concentration was significantly higher than those at lower concentration.These results indicated that the reproductive of A.hygrophilafeeding on A.philoxeroides grown in elevated CO2 concentrations may be enhanced and the elevated CO2 concentrations plays a positive effect on the growth and the development of A.hygrophila population.
作者
周若兰
史梦竹
李建宇
王仪姝
傅建炜
ZHOU Ruo-lan;SHI Meng-zhu;LI Jian-yu;WANG Yi-shu;FU Jian-wei(College of Plant Protect, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;Institute of Plant Protection, Fujian Academy of Agricultural Science/Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests/Fuzhou Scientific Observing and Experimental Station of Crop Pests, Ministry of Agriculture, Fuzhou, Fujian 350002, China;State Key Laboratory of Ecological Pest Control for Fujian and Tawan Crops, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;Institute of Quality Standards ＆ Testing Technology for Agro Products, Fujian Academy of Agricultural Science, Fuzhou, Fujian 350002, China)
出处
《福建农业学报》
CAS
北大核心
2018年第3期293-300,共8页
Fujian Journal of Agricultural Sciences
基金
国家重点研发计划(2016YFC1202101-4)
福建省科技重大专项(2017NZ0003-1-1)
福建省农业科学院科技创新团队建设项目(STIT2017-1-12)
国家自然科学基金项目(31572065)
