The Fall Armyworm Spodoptera frugiperda Found on Rice Oryza sativa L. in China: Their Host Strain, Oviposition Preference and Survival Rate on Rice and Maize

文献类型： 外文期刊

第一作者： Liu, Pingping

作者： Liu, Pingping;Pu, Xiaoming;Sun, Dayuan;Shen, Huifang;Yang, Qiyun;Zhang, Jingxin;Zhang, Liu

作者机构：

关键词： Spodoptera frugiperda; Oryza sativa; C-strain; oviposition preference; survival rate; life table

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2024 年 14 卷 10 期

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收录情况： SCI

摘要： The fall armyworm (FAW), Spodoptera frugiperda, is a serious pest that threatens a range of important crops worldwide. It originated in America and rapidly dispersed throughout Africa and Asia in 2018. There are two subtypes, corn-strain (C-strain) and rice-strain (R-strain), that have different host plant preferences, and the individuals damaging maize in China were identified as C-strain. In the present study, we found FAW individuals damaging rice plants in the field of Guangdong Province, China. FAW larvae and male adults were collected, and the majority of FAWs were characterized as CO I R-strain Tpi C-strain, which is similar to the FAWs damaging maize in China. The FAW adults preferred laying eggs on maize plants more than on rice plants. Compared to those that were fed maize leaves, the FAW larvae were unable to survive when fed 4-week-old rice plants, whereas they could complete their life cycle on 2-week-old rice plants, for which the total survival rate was 8%. The pre-adult- and pupal-stage durations were prolonged, and the fecundity of adult females decreased. Thus, the FAWs found in paddy fields showed better fitness on maize than on rice in the laboratory. Owing to their low survival rate on rice plants, they were unlikely to damage paddy fields in large areas, but populations of FAWs in paddy fields should be monitored.

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