Different adaptability of the brown planthopper, Nilaparvata lugens (Stal), to gradual and abrupt increases in atmospheric CO2

文献类型： 外文期刊

第一作者： Liu, Jinping

作者： Liu, Jinping;Zhuang, Jing;Wang, Chonghui;Hua, Hongxia;Wu, Gang;Huang, Wenkun;Chi, Hsin

作者机构：

关键词： Nilaparvata lugens; Elevated CO2; Gradual CO2 increase; Abrupt CO2 increase; Age-stage; two-sex life table; Multiple generations

期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：5.918； 五年影响因子：5.955 ）

ISSN： 1612-4758

年卷期： 2020 年 93 卷 3 期

页码：

收录情况： SCI

摘要： Increasing atmospheric CO2 concentrations affect the performances of herbivores. Most previous studies have focused on the effects of abrupt increases in CO2 concentration on herbivore performance, but knowledge about the response of herbivores to gradual increases in CO2 is lacking. We tested the hypothesis that herbivores will show different responses to abrupt and gradual CO2 increases. We measured the performance of the brown planthopper (BPH) (Nilaparvata lugens (Stal)) reared on rice for 15 successive generations under three CO2 levels: ambient CO2 (375 mu l/L), a gradual increase in CO2 (25 mu l/L increase per generation, 390-750 mu l/L), and an abrupt increase in CO2 (750 mu l/L). During the first generation, the female and male longevities were affected by both the gradual and abrupt increases in CO2, and the fecundity and net reproductive rate (R-0) of the BPH in the abruptly increased CO2 treatment were significantly lower than those in the other two treatments; there were no significant differences in the intrinsic rate of increase (r) and the finite rate of increase (lambda) among the three CO2 treatments. After 14 generations, female longevity was significantly prolonged in treatments with both gradual and abrupt CO2 increases. The fecundity of the BPHs reared in the gradual CO2 treatment was significantly higher than that in the other two CO2 treatments. According to the population parameters (r, lambda, and R-0) and population projection, under a gradual increase in CO2, the BPH population size was higher than that under an abrupt CO2 increase. We concluded that the BPH abundance will increase under a gradual CO2 increase and consequently result in an increase in rice yield loss.

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