Journal of Pest Science (2020) 93, 979-991

Jinping Liu, Jing Zhuang, Wenkun Huang, Hsin Chi, Chonghui Wang, Hongxia Hua and Gang Wu (2020)
Different adaptability of the brown planthopper, Nilaparvata lugens (Stål), to gradual and abrupt increases in atmospheric CO₂
Journal of Pest Science 93 (3), 979-991
Abstract: 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 (Stål)) reared on rice for 15 successive generations under three CO₂ levels: ambient CO₂ (375 µl/L), a gradual increase in CO₂ (25 µl/L increase per generation, 390–750 µl/L), and an abrupt increase in CO₂ (750 µl/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 (R₀) 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 (λ) 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, λ, and R₀) 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nilaparvata lugens	Rice (Oryza)