Chen Joanne Tzu-Chia, Hsu Feng-Chuan, Tseng Shu-Ping
Department of Entomology, National Taiwan University, Taipei, Taiwan.
Department of Entomology, University of California Riverside, Riverside, CA, USA.
J Insect Sci. 2025 Mar 14;25(2). doi: 10.1093/jisesa/ieaf030.
The black cocoa ant, Dolichoderus thoracicus (Smith 1860), has become a major pest in Taiwan over the past decade. Although a cryptic invasion involving the coexistence of native (mtClade I) and nonnative (mtClade II) lineages within the same species has been reported, key biological features of this species, including reproductive mode, colony structure, dispersal patterns, and population dynamics, remain poorly understood, partially due to the lack of available genetic markers. Accordingly, the present study developed and characterized 20 polymorphic microsatellite markers for D. thoracicus. The number of alleles per locus ranged from 2 to 11 (average = 6). The results suggest a significant level of genetic differentiation between the mtClade I and mtClade II populations. These markers will facilitate studies on gene flow, breeding structure, and colony organization, aiding pest management efforts.
黑可可蚁，即胸多刺蚁（Dolichoderus thoracicus，史密斯，1860年），在过去十年间已成为台湾的主要害虫。尽管已有报道称存在一种隐性入侵现象，即同一物种内本地（线粒体分支I）和非本地（线粒体分支II）谱系共存，但该物种的关键生物学特征，包括繁殖方式、蚁群结构、扩散模式和种群动态，仍知之甚少，部分原因是缺乏可用的遗传标记。因此，本研究开发并鉴定了20个胸多刺蚁的多态微卫星标记。每个位点的等位基因数量在2至11个之间（平均=6个）。结果表明线粒体分支I和线粒体分支II种群之间存在显著的遗传分化。这些标记将有助于基因流动、繁殖结构和蚁群组织的研究，助力害虫管理工作。
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