Biological Characteristics and Research Progress of the Rice Leaf Beetle Oulema oryzae (Coleoptera: Chrysomelidae: Criocerinae).
- 1College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
- 2Harbin Municipal Academy of Agricultural Sciences, Harbin 150029, China.
- 3Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China.
Abstract
The rice leaf beetle, Oulema oryzae, is a pest across eastern Asia and eastern Russia; both its larval and adult stages cause considerable yield losses through foliar consumption. Its obligate diapause ensures population persistence through adverse seasons, but this strategy also hampers outbreak predictability and compromises timely interventions. This paper combines a narrative review with original observations. We first presented original observations on the developmental biology of O. oryzae. The morphological traits of all developmental instars, instar-specific diagnostic features, molting behaviors, and the complete prepupal-to-pupal transition, were described. These observations provide key criteria for accurate field identification and optimal timing of control measures. We then synthesized current knowledge on the biotic and abiotic drivers that shape population dynamics and phenology, as well as evolving integrated pest management (IPM) protocols integrating chemical, biological, and cultural tactics. Finally, we identified critical research frontiers, including the molecular regulation of diapause and development, genomic responses to climate change and cropping intensification, and multitrophic interactions with natural enemies and host plants. By integrating original observations with a broader synthetic review, this paper provides a conceptual foundation for sustainable management and actionable insights for refining IPM strategies against this economically damaging rice pest.
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BibTeX
@article{chen2026biological,
title = {{Biological Characteristics and Research Progress of the Rice Leaf Beetle Oulema oryzae (Coleoptera: Chrysomelidae: Criocerinae).}},
author = {Xiangqin Chen and Qiuming Chen and Shuxiang Zhou and Xinyu Xu and Junjie Yan and Ziyao Liu and Yongming Ruan and Pingyang Zhu},
journal = {Insects},
year = {2026},
month = oct,
doi = {10.3390/insects17101050},
url = {https://europepmc.org/article/MED/42940959},
note = {CC BY},
}
RIS
TY - JOUR
TI - Biological Characteristics and Research Progress of the Rice Leaf Beetle Oulema oryzae (Coleoptera: Chrysomelidae: Criocerinae).
AU - Xiangqin Chen
AU - Qiuming Chen
AU - Shuxiang Zhou
AU - Xinyu Xu
AU - Junjie Yan
AU - Ziyao Liu
AU - Yongming Ruan
AU - Pingyang Zhu
PY - 2026
DA - 2026/10/12
JO - Insects
DO - 10.3390/insects17101050
UR - https://europepmc.org/article/MED/42940959
AB - The rice leaf beetle, Oulema oryzae, is a pest across eastern Asia and eastern Russia; both its larval and adult stages cause considerable yield losses through foliar consumption. Its obligate diapause ensures population persistence through adverse seasons, but this strategy also hampers outbreak predictability and compromises timely interventions. This paper combines a narrative review with original observations. We first presented original observations on the developmental biology of O. oryzae. The morphological traits of all developmental instars, instar-specific diagnostic features, molting behaviors, and the complete prepupal-to-pupal transition, were described. These observations provide key criteria for accurate field identification and optimal timing of control measures. We then synthesized current knowledge on the biotic and abiotic drivers that shape population dynamics and phenology, as well as evolving integrated pest management (IPM) protocols integrating chemical, biological, and cultural tactics. Finally, we identified critical research frontiers, including the molecular regulation of diapause and development, genomic responses to climate change and cropping intensification, and multitrophic interactions with natural enemies and host plants. By integrating original observations with a broader synthetic review, this paper provides a conceptual foundation for sustainable management and actionable insights for refining IPM strategies against this economically damaging rice pest.
SN - 2075-4450
ER -