Genetic diversity and genetic differentiation pattern of an endoparasitoid parasitizing the invasive gall midge across China
文献类型： 外文期刊
作者： Wang, Li 1 ; Huang, Lan 1 ; Cheng, Xiang-Chen 3 ; Ma, Xiu-Hong 4 ; Yang, Jun 1 ; Huai, Wen-Xia 1 ; Lin, Ruo-Zhu 1 ; Zhang, Heng-Yue 4 ; Yao, Yan-Xia 1 ;
作者机构： 1.Chinese Acad Forestry, Ecol & Nat Conservat Inst, Key Lab Forest Protect, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China
2.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing, Peoples R China
3.Natl Forestry & Grassland Adm, Ctr Biol Disaster Prevent & Control, Shenyang, Peoples R China
4.Beijing Acad Forestry & Landscape Architecture, Beijing, Peoples R China
关键词： mitochondrial gene; population genetics; invasive species; endoparasitoid; nature enemy
期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.4； 五年影响因子：2.4 ）
ISSN： 0022-0493
年卷期： 2025 年 118 卷 3 期
页码：
收录情况： SCI
摘要： Platygaster robiniae Buhl & Duso (Hymenoptera: Platygastridae) is an important parasitoid of the black locust gall midge Obolodiplosis robiniae (Haldeman) (Diptera: Cecidomyiidae), an invasive pest that has spread from its native range in North America to Europe and Asia in recent decades. As the dominant natural enemy of O. robiniae in both its native and introduced regions, P. robiniae plays a notable role in the biocontrol of the invasive pest. Understanding the population genetic structure and historical dynamics of P. robiniae is important for gaining valuable insights into the interactions between the parasitoid and invasive species of O. robiniae. However, these aspects remain poorly understood. In this study, we analyzed the genetic variation and historical dynamics of 22 P. robiniae populations across China using mitochondrial cytochrome oxidase subunit I (COI) gene sequences. Our results revealed a high level of genetic diversity and significant genetic differentiation. P. robiniae populations represented relatively abundant haplotypes (59 haplotypes) and phylogenic relationships showed that all populations clustered into 2 clades. Demographic analyses suggested that P. robiniae populations in China have undergone a recent population expansion. These findings provided valuable genetic insights into P. robiniae and contributed to a better understanding of the evolutionary dynamics of an endoparasitoid associated with an invasive gall midge in newly colonized regions.
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