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Special Issue:
昆虫生防和生态合辑Insect Biocontrol and Ecology
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| Microsatellites reveal strong genetic structure in the common cutworm, Spodoptera litura |
| WU Huai-heng1, 2, WAN Peng2, HUANG Min-song2, LEI Chao-liang1 |
1 Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, P.R.China
2 Key Laboratory of Integrated Pest Management on Crops in Central China, Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences, Wuhan 430064, P.R.China |
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Abstract The common cutworm, Spodoptera litura (Lepidoptera: Noctuidae), is a voracious agricultural pest. To increase understanding of the migration patterns and genetic diversity of different geographic populations of this species, we analyzed genetic variation in nine microsatellite loci among 576 individuals collected from 17 locations in China and one in Myanmar during 2011–2012. We successfully identified 162 alleles, with an average of 18 alleles per locus and a range of 5 to 34. The mean observed heterozygosity of the 18 populations ranged from 0.18 to 0.98, and the expected heterozygosity ranged from 0.19 to 0.89. For the nine microsatellite markers studied, polymorphism information content ranged from 0.18 to 0.88 (mean=0.64). We found low genetic differentiation among the 18 populations (mean F-statistics (FST)=0.05) and high genetic diversity among individuals. Principle coordinates analysis indicated no significant correlation between geographic and genetic distance (r=0.04). The value of Nm (Nm>4) estimated using coalescent-based methods suggests strong gene flow with migration. The nine microsatellite markers identified in this study will be beneficial for further investigation of migration patterns and genetic diversity in S. litura.
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Received: 21 December 2017
Accepted:
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| Fund: The work was funded by the Youth Foundation of Hubei Academy of Agricultural Sciences, China (2016NKYJJ11). |
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Corresponding Authors:
Correspondence LEI Chao-liang, E-mail: ioir@mail.hzau.edu.cn
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Cite this article:
WU Huai-heng, WAN Peng, HUANG Min-song, LEI Chao-liang.
2019.
Microsatellites reveal strong genetic structure in the common cutworm, Spodoptera litura. Journal of Integrative Agriculture, 18(3): 636-643.
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