Population Growth of Fall Armyworm, Spodoptera frugiperda Fed on Cereal and Pulse Host Plants Cultivated in Yunnan Province, China

Abstract

The fall armyworm, Spodoptera frugiperda is a major agricultural pest in China, and has migrated from its continuous breeding area to other parts of China. In our study, the biological behaviors of S. frugiperda fed on maize, wheat, barley, faba beans, and soya beans were evaluated in a growth chamber. Results indicated that maize-fed S. frugiperda larvae performed well, as evidenced by shorter larva-adult periods, adult pre-oviposition period (APOP), total pre-oviposition period (TPOP), and generation time (T), and a higher survival rate, intrinsic (r) and finite (λ) rate of increase, and net reproductive rate (Ro), However, S. frugiperda larvae performed weakly when fed barley and faba bean plants, as indicated by lower survival rates, r, and λ, and longer pre-adult period, TPOP, and T. A heavier pupal weight of both sexes was recorded on faba beans (0.202 g) and a lighter weight on barley (0.169 g). Fecundity was higher when fed faba beans and maize, and lower when fed wheat and barley. Thus, maize was the most optimal and barley was the least optimal host plant, followed by faba beans, for S. frugiperda larvae growth and development. This study enhances our knowledge of S. frugiperda in these host plants and can help in the design of management approaches.

Life Table Study of Fall Armyworm (Spodoptera frugiperda) (Lepidoptera: Noctuidae) on Three Host Plants under Laboratory Conditions

“…Regarding the oviposition period and fecundity, a recent study showed that legumes are considered a suitable source for FAW. Gebretsadik et al [31] reported that FAW fed on maize and faba beans had longer oviposition periods and higher fecundities in comparison to other hosts such as wheat and barley. In accordance with Barcelos et al [32], heavier pupa might produce bigger and stronger adults, which might increase the insect's reproduction capacity.…”

Nutritional Physiology of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) Fed on Different Wheat Varieties

“…According to Gebretsadik et al [21], the development of S. frugiperda, including the duration of larval and pupal stages, adult longevity and survival, was significantly influenced by maize compared to other crops. Our results showed that the feeding indices parameters, including relative consumption and growth rate and ingested feed conversion efficiency, we re sa tisfactory when the larvae fed on wheat varieties Fakhr-e-Bhakkar-17 and Akbar-19, compared to maize.…”

Identification of Pest Attack on Corn Crops Using Machine Learning Techniques

“…Fall armyworms reportedly attack over 350 host plants across 76 families [12]. At the global scale, crop damage by fall armyworms across hosts includes maize losses (19.5-41.1%), (Zea mays L.) [13], sorghum, (Sorghum bicolor (L.) Moench) [14], rice losses (24.6-40.9%) [14], (Oryza sativa), soybean losses (11.0-32.4%), (Glycine max (L.) Merr) [15], cotton, (Gossypium hirsutum L.), barley, (Hordeum vulgare L.) [16] and wheat losses (10.1-28.1%), (Triticum aestivum L.) [17], potato losses (8.1-21.0%), (Solanum tuberosum L.) [18] with graminaceous plants being preferred [12,19].…”