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Journal of Integrative Agriculture  2021, Vol. 20 Issue (3): 715-726    DOI: 10.1016/S2095-3119(20)63198-7
Section 2: Invasion and migration Advanced Online Publication | Current Issue | Archive | Adv Search |
Adult nutrition affects reproduction and flight performance of the invasive fall armyworm, Spodoptera frugiperda in China
HE Li-mei1, 2, JIANG Shan3, CHEN Yu-chao4, Kris A. G. WYCKHUYS1, GE Shi-shuai4, HE Wei5, GAO Xi-wu2, WU Kong-ming1 
1 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China
2 College of Plant Protection, China Agricultural University, Beijing 100193, P.R.China
3 College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, P.R.China
4 State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, P.R.China
5 College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, P.R.China
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鉴于植物花蜜或花粉等补充营养是影响鳞翅目昆虫成虫生殖系统发育和产卵量的重要因素,我们测定了取食不同补充营养(5%洋槐蜂蜜水、5‰玉米花粉水、5‰油菜花粉水、5‰向日葵花粉水、5‰松花粉水、5‰玫瑰花粉水、2.5%洋槐蜂蜜+2.5‰油菜花粉水、2.5%洋槐蜂蜜+2.5‰松花粉水和清水)草地贪夜蛾成虫的内生殖系统发育进度、繁殖和飞行能力。研究结果表明,补充蜂花粉和蜂蜜可显著促进草地贪夜蛾内生殖系统的发育进度,增加产卵量,延长成虫寿命和飞行时间。取食5%洋槐蜂蜜水草地贪夜蛾的产卵前期、产卵期和寿命最长,分别为10.8、6.8和19.2天;而补充2.5%洋槐蜂蜜+2.5‰松花粉草地贪夜蛾雌蛾的交配率最高,为79.7%,单雌产卵量达644.9粒,卵的孵化率为82.3%。取食蜂蜜可延缓草地贪夜蛾精巢的衰减,2.5%洋槐蜂蜜+2.5‰松花粉对草地贪夜蛾卵巢发育的促进作用最强。与取食花粉相比,蜂蜜可显著增强草地贪夜蛾的飞行能力,取食5%洋槐蜂蜜水草地贪夜蛾的飞行时间最长(9.5 h),飞行距离最远(29.9 km),飞行速度最大(3.1 km/h)。研究结果对解析环境植被分布对入侵草地贪夜蛾种群消长动态的调控机制,发展成虫取食诱捕和综合治理技术有重要价值。

Floral resources, such as carbohydrate-rich nectar or pollen, can bolster fitness and raise reproductive output of adult lepidopterans.  Here, we used laboratory experiments to assess how those plant-derived foods impact adult fecundity, reproductive physiology and flight performance of an invasive strain of the fall armyworm, Spodoptera frugiperda (FAW; Lepidoptera: Noctuidae) in China.  More specifically, supplementary feeding on bee pollen and honey enhanced FAW flight duration, testis size, ovarian development, longevity and adult fecundity.  FAW adults attained the longest pre-oviposition (10.8 days) and oviposition period (6.8 days) and longevity (19.2 days) on 5% acacia honey.  Upon access to 2.5% acacia honey and 2.5‰ pine pollen, S. frugiperda attained the highest mating rate (79.7%), fecundity (644.9 eggs/female) and egg hatching rate (82.3%).  Feeding on honey further delayed decay of male testes, while ovarian development was enhanced when female moths were allowed access to 2.5% honey and 2.5‰ pine pollen.  Upon feeding on 5% honey solution, S. frugiperda engaged in flight over the longest duration (9.5 h), distance (29.9 km) and speed (3.1 km h–1).  Honey had a comparatively greater effect on the above parameters than pollen.  Our findings help decipher FAW invasion patterns and population dynamics, facilitate the development of nutritional attractants, and contribute to integrated pest management of this newly-invasive pest in eastern Asia.
Keywords:  supplementary nutrition        fecundity        adult reproduction        flight parameter        invasion biology        nutritional physiology  
Received: 17 December 2019   Accepted:
Fund: This work was supported by the earmarked fund of China Agriculture Research System (CARS-15-19) and the Central Public-interest Scientific Institution Basal Research Fund, China (Y2019YJ06).
Corresponding Authors:  Correspondence WU Kong-ming, Tel: +86-10-82105551, E-mail:   

Cite this article: 

HE Li-mei, JIANG Shan, CHEN Yu-chao, Kris A. G. WYCKHUYS, GE Shi-shuai, HE Wei, GAO Xi-wu, WU Kong-ming . 2021. Adult nutrition affects reproduction and flight performance of the invasive fall armyworm, Spodoptera frugiperda in China. Journal of Integrative Agriculture, 20(3): 715-726.

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