鹿甲Dorcus montivagus(鞘翅目,Lucanidae)的系统地理学:与其特定寄主树日本山毛榉Fagus crenata的系统地理学比较

IF 0.7 4区 农林科学 Q4 ENTOMOLOGY Entomological Science Pub Date : 2023-02-04 DOI:10.1111/ens.12535
Gaku Ueki, Koji Tojo
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引用次数: 1

摘要

Dorcus montivagus是一种日本特有的鹿角甲虫,专门以死山毛榉木材为食,其分布几乎与山毛榉林完全一致。日本山毛榉(Fagus crenata)是日本冷温带落叶阔叶林的优势树种。更新世气候变化导致的山毛榉林分布的历史变化预计也会影响以山毛榉为食的植食性昆虫的系统地理结构。在本研究中,我们使用分子标记阐明了蒙蒂瓦格斯的现有系统地理结构,并将其与山毛榉树的现有地理遗传结构和花粉化石分析推断的冰川后分布进行了比较。研究发现,D.montivagus在很大程度上可分为两个系统发育分支:分支I由北海道、本州和四国的种群组成,分支II仅由九州种群组成。此外,鹿角甲虫的遗传多样性从西南到东北呈地理下降趋势,这与日本山毛榉的遗传变异一致。日本海侧和太平洋侧种群之间的遗传分化也在鹿角甲虫的两个分支中观察到。这些结果表明,鹿角甲虫和日本山毛榉之间存在相似的系统地理结构。因此,日本山毛榉的分布变化相应地限制了山毛榉的迁徙扩散,并强烈影响了其系统地理结构。
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The phylogeography of the stag beetle Dorcus montivagus (Coleoptera, Lucanidae): Comparison with the phylogeography of its specific host tree, the Japanese beech Fagus crenata

Dorcus montivagus is a Japanese endemic stag beetle that feeds exclusively on dead beech wood, and its distribution is almost completely coincidental with that of beech forests. Japanese beech, Fagus crenata, is the dominant tree species of the cool-temperate deciduous broad-leaved forests in Japan. Historical changes in the distribution of beech forests due to Pleistocene climate change are expected to have also affected the phylogeographic structures of dependent beech-feeding phytophagous insects. In this study, we elucidated the present phylogeographic structures of D. montivagus using molecular markers, and also compared them with the present geographic genetic structures of beech tress and the post-glacial distribution as inferred by pollen fossil analyses. It was found that D. montivagus is largely differentiated into two phylogenetic clades: Clade I consisted of populations from Hokkaido, Honshu and Shikoku, and Clade II consisted only of Kyushu populations. Furthermore, the genetic diversity of the stag beetle showed a geographically declining gradient from south-west to north-east, consistent with the genetic variation observable in Japanese beech. Genetic differentiation between the Sea of Japan side and the Pacific Ocean side populations was also observed in both clades of the stag beetle. These results indicate a similar phylogeographic structure between the stag beetle and Japanese beech. Therefore, the distributional changes in Japanese beech correspondingly restricted the migratory dispersal of D. montivagus, and strongly influenced its phylogeographic structure.

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来源期刊
Entomological Science
Entomological Science 生物-昆虫学
CiteScore
2.00
自引率
11.10%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Entomological Science is the official English language journal of the Entomological Society of Japan. The Journal publishes original research papers and reviews from any entomological discipline or from directly allied field in ecology, behavioral biology, physiology, biochemistry, development, genetics, systematics, morphology, evolution and general entomology. Papers of applied entomology will be considered for publication if they significantly advance in the field of entomological science in the opinion of the Editors and Editorial Board.
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