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Effects of Elevated CO2 on the Fitness Parameters of Individually- and Group-Reared Agasicles hygrophila (Coleoptera: Chrysomelidae)

文献类型： 外文期刊

作者： Li, Jian-Yu 1 ; Chen, Yan-Ting 1 ; Zheng, Li-Zhen 1 ; Fu, Jian-Wei 2 ; Shi, Meng-Zhu 1 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Plant Protect, Fujian Engn Res Ctr Green Pest Management, Fujian Key Lab Monitoring & Integrated Management, Fuzhou 350013, Peoples R China

2.Fujian Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Fujian Key Lab Agroprod Qual & Safety, Fuzhou 350001, Peoples R China

关键词： Agasicles hygrophila; ambient CO2; elevated CO2; individually-reared; group-reared

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.447； 五年影响因子：2.483 ）

ISSN： 0022-0493

年卷期：

页码：

收录情况： SCI

摘要： Agasicles hygrophila Selman and Vogt (Coleoptera: Chrysomelidae) is a natural enemy of Alternanthera philoxeroides (Mart.) Griseb (Amaranthaceae: Alternanthera), a worldwide invasive weed. Elevated atmospheric CO2 concentrations may have significant impacts plants, herbivorous insects, and natural enemies. To assess the concurrent effect of elevated CO2 on the development time, fecundity, and population parameters of A. hygrophila, the age-stage, two-sex life table was used to understand the fitness and population parameters of individually-reared and group-reared A. hygrophila under elevated CO2 concentration. In individually-reared population, the development time of preadults, adult pre-oviposition period, and total pre-oviposition period of A. hygrophila in the elevated CO2 (eCO(2), 750 ppm) treatment were shorter than those in the ambient CO2 (aCO(2), 420 ppm) treatment. In group-reared population, the developmental time of preadults, female adult longevity, female proportion, adult pre-oviposition period, and total pre-oviposition period of A. hygrophila in eCO(2) were longer than those in aCO(2). Additionally, in both individually-reared and group-reared population, fecundity and oviposition days of A. hygrophila in eCO(2) were higher than those in aCO(2), and a higher intrinsic rate of increase, finite rate of increase, and the net reproductive rate of A. hygrophila were observed at eCO(2). Moreover, shorter preadult development time, adult pre-oviposition period, total pre-oviposition period, male adult longevity, and higher fecundity were found in group-reared cohort at both aCO(2) and eCO(2). The results indicates that elevated CO2 has effects on the growth and reproduction of A. hygrophila, and the population growth rate of group-reared was faster and produced more offspring.

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