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ISSN : 1225-0171(Print)
ISSN : 2287-545X(Online)
ISSN : 2287-545X(Online)
Korean Journal of Applied Entomology Vol.65 No.1 pp.97-105
DOI : https://doi.org/10.5656/KSAE.2026.02.0.007
DOI : https://doi.org/10.5656/KSAE.2026.02.0.007
Comparison of Regional Larval Emergence Patterns of Major Chestnut Pests in Korea
Abstract
Castanea crenata is a major non-timber forest product in Korea with high economic value, and damage caused by chestnut seed pests leads to significant economic losses. To provide baseline information for reducing damage by chestnut seed pests, this study investigated regional differences in larval emergence patterns and pest composition of major chestnut fruit pests in Korea. Chestnuts were collected from three major production areas—Choongju, Buyeo, and Hadong—and reared under controlled laboratory conditions. Tortricid larvae were identified as Cydia kurokoi using mitochondrial COI. Larvae emerging from the chestnuts were monitored daily to determine species composition, emergence onset, duration of emergence, and the timing required to reach 50% and 90% of total larval emergence. Three larval species were identified across all regions: the peach pyralid moth Conogethes punctiferalis, the chestnut nut tortrix C. kurokoi, and the chestnut weevil Curculio sikkimensis. In all regions, larval emergence of C. punctiferalis began and ended earlier than that of the other species, followed by C. sikkimensis and C. kurokoi. However, marked regional differences in larval composition were observed. In Choongju and Buyeo, C. kurokoi was the dominant species, whereas in Hadong, C. kurokoi and C. sikkimensis were co-dominant in larval composition. Notably, C. kurokoi, which has received relatively little attention in conventional pest management programs, accounted for the highest proportion of larvae in all surveyed regions. These findings demonstrate that the composition and dominance of chestnut fruit pests can vary substantially among regions and over time. The results provide essential baseline information for improving pest monitoring, optimizing control timing, and re-evaluating current management strategies for chestnut insect pests in Korea.
초록
Vol. 40 No. 4 (2022.12)
Frequency Quarterly
Doi Prefix 10.5656/KSAE
Year of Launching 1962
Publisher Korean Society of Applied Entomology
Online Submission
submission.entomology2.or.kr
KSAE
The Korean Society of Applied Entomology
