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

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

doi:10.1007/s10340-020-01221-x

Cited by 10 publications

(5 citation statements)

References 37 publications

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“…Frequent outbreaks of RPH populations are ascribed to seasonal migration from south to north and vice versa in rice-growing countries of Eastern Insects 2023, 14, 307 2 of 11 Asia [1][2][3][4][5], rapid development of resistance to various chemical insecticides [6][7][8][9][10], resurgence induced by overuse of pesticides [11], and adaptation to resistant rice varieties [12,13]. Air temperature and CO 2 concentration elevated due to climate change facilitate RPH outbreaks [14][15][16][17]. Conventional fertilizer application necessary for rice growth also promote RPH reproduction [18,19].…”

Section: Introductionmentioning

confidence: 99%

Timing of Fungal Insecticide Application to Avoid Solar Ultraviolet Irradiation Enhances Field Control of Rice Planthoppers

Wen

et al. 2023

Insects

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Thechemical control of rice planthoppers (RPH)is prohibited in annual rice–shrimp rotation paddy fields. Here, the fungal insecticides Beauveria bassiana ZJU435 and Metarizhium anisoplae CQ421 were tested for control of RPH populations dominated by Nilaparvata lugens in three field trials. During four-week field trials initiated from the harsh weather of high temperatures and strong sunlight, the rice crop at the stages from tillering to flowering was effectively protected by fungal sprays applied at 14-day intervals. The sprays of either fungal insecticide after 5:00 p.m. (solar UV avoidance) suppressed the RPH population better than those before 10 a.m. The ZJU435 and CQ421 sprays for UV avoidance versus UV exposure resulted in mean control efficacies of 60% and 56% versus 41% and 45% on day 7, 77% and 78% versus 63% and 67% on day 14, 84% and 82% versus 80% and 79% on day 21, and 84% and 81% versus 79% and 75 on day 28, respectively. These results indicate that fungal insecticides can control RPH in the rice–shrimp rotation fields and offer a novel insight into the significance of solar-UV-avoiding fungal application for improved pest control during sunny summers.

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Section: Introductionmentioning

confidence: 99%

Timing of Fungal Insecticide Application to Avoid Solar Ultraviolet Irradiation Enhances Field Control of Rice Planthoppers

Wen

et al. 2023

Insects

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“…Predicted development periods in this study tended to be shorter than the observed period, even when considering air temperature within the canopy. Additionally, factors other than temperature may influence development periods ( Rashid et al 2016 , Ikeuchi and Kubota 2018 , Vailla et al 2019 , Liu et al 2020 ). It has been established that feeding S. furcifera with paddy rice damaged by the same species slows their development rate ( Matsumura and Suzuki 2003 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of microclimatic temperatures on the development period of 3 rice planthopper species (Hemiptera: Delphacidae): a phenology model based on field observations

Mochizuki,

Yashiro,

Sanada-Morimura

et al. 2024

Environmental Entomology

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Most pest phenology models are temperature dependent. Generally, the air temperature at reference height is used to predict pest development, but the air temperature varies between inside and outside the crop canopy, where pests reside. Here, we sampled 3 rice planthopper species—Nilaparvata lugens (Stål), Sogatella furcifera (Horváth), and Laodelphax striatellus (Fallén)—and micrometeorological observations in paddy fields to analyze how thermal environments inside the canopy affect pest development. Seasonal variations in the population density of these species were surveyed in 3 experimental fields with 2 water temperature plots (normal and low-water temperature plots). The development periods of the 3 species were predicted individually based on pest phenology models using temperatures recorded at 6 heights (0.0–2.0 m). We calculated the root mean square error (RMSE) values from the predicted and observed development periods for each rice planthopper. The development prediction using the temperature inside the canopy was more accurate than that utilizing the temperature at the reference height (2.0 m). In the low-water temperature plot, the RMSE value for N. lugens, S. furcifera, and L. striatellus was 6.4, 5.6, and 4.1 when using the temperature at the reference height (2.0 m), respectively, and 2.8, 3.8, and 2.9 when employing the temperature inside the canopy at 0.25 m, respectively. The development prediction utilizing the air temperature at the bottom (0.25 m) of canopy, where N. lugens resides, was most effective for N. lugens among the 3 species. These findings suggest the importance of utilizing microhabitat-based temperatures to predict pest development.

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“…Four treatment groups were investigated in this experiment: a control treatment group ( N. lugens population feeding on rice plants treated with 0.1% Triton X-100 water solution), a pymetrozine treatment group ( N. lugens population feeding on rice plants treated with pymetrozine at LC 50 ), a zhongshengmycin treatment group ( N. lugens population feeding on rice plants treated with zhongshengmycin at LC 50 ), and a mixture treatment group ( N. lugens population feeding on rice plants treated with a 1:40 pymetrozine-zhongshengmycin mixture). Separate life tables were constructed for the N. lugens populations in the four treatment groups using the age-stage, two-sex life-table approach ( Chi et al, 2020 ; Liu et al, 2020 ). Approximately 1000 N. lugens adults from each group were transferred into a clean acrylic frame (40 cm length, 30 cm width, 50 cm height) with fresh and healthy rice seedlings for oviposition.…”

Section: Methodsmentioning

confidence: 99%

Fitness costs of resistance to insecticide pymetrozine combined with antimicrobial zhongshengmycin in Nilaparvata lugens (Stål)

Feng

Wang

et al. 2023

Front. Physiol.

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The brown planthopper, Nilaparvata lugens (Stål), is a major pest of rice crops, and its control is critical for food security. Pymetrozine has been recommended as an alternative to imidacloprid for controlling N. lugens, but the pest has developed high resistance to it, making its prohibition and restriction urgent. To address this issue, we conducted a study using a mixture of pymetrozine and zhongshengmycin with the effective ratio of 1:40, to evaluate the fitness costs in N. lugens. Our results showed that N. lugens had a relative fitness of 0.03 under this ratio, with significantly reduced longevity, female and male adult periods, total pre-oviposition days, and fecundity. Moreover, the expression levels of the uricase gene (EC1.7.3.3) and farnesyl diphosphate farnesyl transferase gene (EC2.5.1.21) were reduced in N. lugens. These genes are involved in urea metabolism and steroid biosynthesis pathway, respectively, and their suppression can interfere with the normal nutritional function of N. lugens. Our study demonstrates that the combination of chemical insecticides and antimicrobials can delay the development of resistance and improve the efficiency of pest control. This information is valuable for researchers developing management strategies to delay the development of pymetrozine resistance in N. lugens.

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

Cited by 10 publications

References 37 publications

Timing of Fungal Insecticide Application to Avoid Solar Ultraviolet Irradiation Enhances Field Control of Rice Planthoppers

Timing of Fungal Insecticide Application to Avoid Solar Ultraviolet Irradiation Enhances Field Control of Rice Planthoppers

Effect of microclimatic temperatures on the development period of 3 rice planthopper species (Hemiptera: Delphacidae): a phenology model based on field observations

Fitness costs of resistance to insecticide pymetrozine combined with antimicrobial zhongshengmycin in Nilaparvata lugens (Stål)

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