講演詳細

動物・昆虫部門[Forest Zoology and Entomology]

日付	2026年3月18日
開始時刻	ポスター発表
会場名	多目的ホール
講演番号	PL-22
発表題目	Phylogeography of the ambrosia beetle Platypus koryoensis in South Korea and Japan Phylogeography of the ambrosia beetle Platypus koryoensis in South Korea and Japan
所属	森林総合研究所
要旨本文	Platypus koryoensis is an ambrosia beetle distributed in East Asia and a major vector of Korean oak wilt in South Korea, where it has caused serious forest damage. In Japan, however, its occurrence has been confirmed only since 2010 in limited areas of Oita Prefecture, Kyushu. The phylogeographic structure of this species remains poorly understood, particularly in Japanese populations. We analyzed mitochondrial DNA COI sequences from 74 individuals collected from seven localities in South Korea and one in Japan to assess geographic genetic variation. Korean populations showed high haplotype diversity, whereas only a single haplotype was detected in the Japanese population. Although this haplotype was not identical to those detected in Korea, sequence divergence was small, suggesting a close genetic relationship with Korean populations and a strong historical bottleneck in the Japanese population.
著者氏名	○Takuya Kobayashi1 ・ Yonghwan Park2 ・ Hideaki Goto3 ・ Keiko Hamaguchi4 ・ Sang-Tae Seo2 ・ Akira Ueda1
著者所属	1Forestry and Forest Products Research Institute ・ 2Korea Forest Research Institute ・ 3Forestry and Forest Products Research Institute ・ 4Forestry and Forest Products Research Institute
キーワード	Oak wilt, Mitochondrial DNA marker, Isolated population
Key word	Oak wilt, Mitochondrial DNA marker, Isolated population