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ISSN : 1225-0171(Print)
ISSN : 2287-545X(Online)
Korean Journal of Applied Entomology Vol.63 No.4 pp.347-360
DOI : https://doi.org/10.5656/KSAE.2024.08.0.027

Overwintering Seasons of Chilo suppressalis, the Asiatic Rice Borer, in Rice and Chilo niponella (Lepidoptera: Crambidae) in Amur Silver Glass

Eun Young Kim, Young-Mi Park1, Bo Yoon Seo2, Nak Jung Choi2, Chang-Gyu Park3, Jin Kyo Jung*
Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16429, Korea
1Jungbu Regional Office, Animal and Plant Quarantine Agency, Incheon 22133, Korea
2Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea
3Department of Industrial Entomology, Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea

Abstract

Overwintering larvae belonging to the genus Chilo (Crambidae) were collected from rice (Oryza sativa) fields in Gunsan and Goseong (Gyeongsangnam-do, GN) and from Amur silver grass (Miscanthus sacchariflorus) fields in Muan and Hwasun between September 2012 and March 2013. Based on the partial nucleotide sequences of the cytochrome c oxidase 1 gene and adult genital morphology, the larvae collected from rice plants were identified as Chilo suppressalis (Walker, 1863),the Asiatic rice borer, whereas those from Amur silver grass were identified as Chilo niponella (Thunberg, 1788) (synonym, C. hyrax Błeszyński, 1965). All adults obtained from the sex pheromone traps of C. suppressalis installed in several regions were confirmed to be the target species, i.e., C. suppressalis. Both species overwintered as the final larval instar. When placed under outdoor conditions in Suwon transferred soon after sampling, the collected overwintering larvae pupated between May and June 2013, with larval survival rates ranging from 14 to 88%. The larvae of C. suppressalis collected from Goseong (GN) in March, and the larvae of C. niponella collected from Hwasun in late January, were presumed to be in the developmental process with terminated diapause at the time of collection. When the neonate larvae of indoor colonies artificially created by mixing both species were reared outdoors in Suwon, individuals that started development between late June and September were induced to diapause, and developed into overwintering larvae. Of those, the neonate larvae of colonies that started development from late June to late July produced mixed populations of non-overwintering and overwintering larvae in a cohort.

초록

 

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Vol. 40 No. 4 (2022.12)

Journal Abbreviation Korean J. Appl. Entomol.
Frequency Quarterly
Doi Prefix 10.5656/KSAE
Year of Launching 1962
Publisher Korean Society of Applied Entomology
Indexed/Tracked/Covered By