Population occurrence of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in the winter season of China

Yang, Xinming; Song, Yu; Sun, Xiaoxu; Shen, Xiujing; Wu, Qiong; Zhang, Hao-wen; Zhang, Dandan; Zhao, Shengyuan; Liang, Gemei; Wu, Kongming

doi:10.1016/s2095-3119(20)63292-0

Cited by 50 publications

(42 citation statements)

References 19 publications

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“…Different patterns of host plant use by herbivorous insects are associated with the physiology, morphology, chemical and physical defenses of the host plant [30]. The SPK and PDC of these mature wheat plants may not be suitable for FAW larvae because their feeding on them was rarely recorded [1,15]. In this study, the FAW feeding on tender SPK and PDC achieved preferable fitness, but if its development were not completed on more suitable tissues, F-1bs and the lower leaves may be an important replacement food source to complete development.…”

Section: Discussionmentioning

confidence: 99%

“…In China, wheat is a main staple and comprises the second largest cultivated area of any crop. Since the FAW invasion, damage to wheat at the seedling or tillering stage has been recorded in Yunnan, Sichuan, Anhui, and other central or south provinces [15]. Furthermore, a study conducted under cage conditions confirmed that the FAW causes damage from the booting to the milk developmental stage in wheat fields.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Different Wheat Tissues on the Population Parameters of the Fall Armyworm (Spodoptera frugiperda)

et al. 2021

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The fall armyworm (FAW), Spodoptera frugiperda, is an invasive migratory pest that prefers to feed on crops of the Gramineae family such as maize and wheat. It has been recorded in different locations in China since its invasion in 2019. To assess its effect on different wheat tissues and to provide a risk evaluation for wheat fields, FAW larvae were reared on the wheat seedling (WS), spike (SPK), peduncle (PDC), flag leaf blade (F-b), and blade of the first leaf under flag (F-1b). The population parameters were recorded, and the data were analyzed using the age-stage, two-sex life table method. The results showed that the FAW achieved successful development on all the substrates, although those fed on F-1b grew the slowest, had the smallest pupal weight, and deposited the fewest eggs. The larval survival rates of those fed on WS, SPK, and PDC were more than 80%, while for F-b and F-1b they were 56.58% and 32.03%, respectively. Feeding on leaf blades also resulted in lower fertility, reproductive capacity, life expectancy, net reproductive rate, intrinsic rate of increase, and finite rate of increase. These results indicated that feeding on WS, SPK, and PDC were more beneficial for development compared to F-b and F-1b alone. However, leaf blades alone can still support the full FAW lifecycle and thus could play an important role in nutrition, especially when quantities of the preferred host tissues are not sufficient. These results provide guidance for assessing the FAW risk in China.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Different Wheat Tissues on the Population Parameters of the Fall Armyworm (Spodoptera frugiperda)

et al. 2021

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“…Understanding the spread patterns (e.g., single invasive bridgehead effect (Guillemaud et al 2011) vs. mass dispersion (Wilson et al 2009)) and frequencies of introduction (e.g., single introduction (Cock et al 2017, Nagoshi et al 2018, Nagoshi et al 2019b, Gui et al 2020) vs. multiple introductions (Schlum et al 2021, Tay et al 2021a, Tay et al 2021b, Jiang et al 2022, Tay et al 2022a, Tay et al 2022c)) of the current invasive FAW populations in Africa, Asia, and Pacific/Australia will have significant implications for the future management of this pest, especially with respect to the delimitation between human-assisted introductions (i.e., preventable via behavioural change) vs. climatic factor-assisted natural migration (i.e., difficult to prevent/not preventable), insecticide resistance management (Tay et al 2021a, Tay et al 2022c), and climate (i.e., hot and cold) adaptation and tolerance (e.g., Foster and Cherry 1987, Keosentse et al 2021, Yang et al 2021, Zhang et al 2021), highlighting most likely agents of spread. It also highlights that evaluating possible future incursion routes makes it necessary to identify weak points in the phytosanitary risk assessments, to enable future targeted monitoring at the right places, and to critically assess official reporting and announcement dates.…”

Section: Introductionmentioning

confidence: 99%

Complex multiple introductions drive fall armyworm invasions into Asia and Australia

Rane¹,

Walsh²,

Lenancker

et al. 2022

Preprint

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The fall armyworm (FAW) Spodoptera frugiperda is thought to have undergone a rapid ′west-to-east′ spread since 2016 when it was first identified in western Africa. Between 2018 and 2020, it was also recorded from South Asia (SA), Southeast Asia (SEA), East Asia (EA), and Pacific/Australia (PA). Population genomic analyses enables the understanding of pathways, population sources, and gene flow in this notorious agricultural pest species. Using neutral single nucleotide polymorphic (SNP) DNA markers, we detected genome introgression that suggested most populations were overwhelmingly C- and R-strain hybrids. SNP and mitochondrial DNA markers identified multiple introductions that were most parsimoniously explained by anthropogenic-assisted spread, i.e., associated with international trade of live/fresh plants and plant products, and involved ′bridgehead populations′ in countries to enable successful pest establishment in neighbouring countries. Distinct population genomic signatures between Myanmar and China do not support the ′African origin spread′ nor the ′Myanmar source population to China′ hypotheses. Significant genetic differentiation between populations from different Australian states supported multiple pathways involving distinct SEA populations. Our study identified Asia as a biosecurity hotspot and a FAW genetic melting pot, and demonstrated the use of genome analysis to disentangle preventable human-assisted pest introductions from unpreventable natural pest spread

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“…The developmental rates of invasive insects increase in response to increasing temperatures [21]. Although FAW is not able to overwinter in northern China and North America due to a lack of diapause and suitable host plants, high temperatures trigger FAW outbreaks through an acceleration of their development and reduction in the duration of their life cycle [6,[22][23][24]. Therefore, it is essential to evaluate the effects of a temperature gradient on the performance of FAW.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Temperatures and Hosts on the Life Cycle of Spodoptera frugiperda (Lepidoptera: Noctuidae)

CHEN

Chen²,

Yang

et al. 2022

Insects

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The interactions between ambient temperatures and host plants are central to the population dynamics of invasive animal species. Despite significant research into the effects of temperatures, the performance of invasive species is also influenced by host plants. The effects of different temperatures (20, 25, and 30 °C) and host plants (maize, sorghum, and coix seed) were tested on the mortality, development, reproduction, and population parameters of the fall armyworm (FAW), Spodoptera frugiperda (J E Smith) (Lepidoptera: Noctuidae), using an age-stage, two-sex life table. The results support the hypothesis that temperature and the species of the host plant significantly influences the performance of FAW. Feeding on maize at 30 °C resulted in a lower mortality rate, a shorter developmental time and longevity, a higher fecundity, intrinsic rate of natural increase (r), finite rate of increase (λ), and net reproductive rate (R0). However, at 20 °C, the host plant could eliminate temperature-mediated synergism in FAW performance, which did not reach statistical significance at 20 °C. Similar results induced by a relatively low temperature (20 °C) on different host plants were also found in the age-stage specific survival curves (sxj), fecundity (mx), maternity (lxmx), and reproductive value (vxj) curves of FAW. Consequently, we also need to pay more attention to FAW outbreaks on different host plants mediated by relatively low temperatures.

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Population occurrence of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in the winter season of China

Cited by 50 publications

References 19 publications

Effects of Different Wheat Tissues on the Population Parameters of the Fall Armyworm (Spodoptera frugiperda)

Effects of Different Wheat Tissues on the Population Parameters of the Fall Armyworm (Spodoptera frugiperda)

Complex multiple introductions drive fall armyworm invasions into Asia and Australia

The Effect of Temperatures and Hosts on the Life Cycle of Spodoptera frugiperda (Lepidoptera: Noctuidae)

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