数字农科院2.0

Mitochondrial genomes reveal population structure of the locust Oedaleus decorus asiaticus(Orthoptera: Oedipodidae) in China

文献类型： 外文期刊

作者： Xi Li;Shiqian Feng;Na Risu;Lijun Gao;Oyunbayar Amanjol;Uuganbayar Chuluunbaatar;Na Muriga;Hongmei Li;Zhan Niyazbekov;Alua Rysbekova;Xiongbing Tu;Guangjun Wang;Undarmaa Davaasambuu

关键词： complete mitochondrial genome; population genetic structure; genetic differentiation; spatial genetic pattern

期刊名称： Agronomy-Basel

ISSN：

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： The locust Oedaleus decorus asiaticus undergoes massive outbreaks and engages in round-trip migratory flights across northern China and Mongolia. However, its specific genetic structure remain poorly understood. In this study, we sequenced the complete mi-tochondrial genomes of 163 O. decorus asiaticus individuals from 16 locations in northern China using high-throughput sequencing data and analyzed its population structure. The results showed that these mitochondrial genomes are 15,142 to 15,914 bp in sizes, with size variation attributed to A+T-rich regions in intergenic spacers. All 13 protein-coding genes exhibited conserved lengths across samples. The overall genetic differentiation be-tween populations was small (Fst = 0.00843), with high gene flow (Nm = 29.40). Both ge-netic differentiation and DAPC analyses revealed significant genetic differentiation in the New Barag Left Banner population compared to the Zhengxiangbai Banner, Taibus Banner, Xianghuang Banner, and Zhenglan Banner populations. The phylogenetic tree and haplo-type network suggest Hap_20 is presumably a relatively ancestral haplotype and all hap-lotypes were divided into two clades, and no population formed a distinct independent clade. Our findings indicate that the O. decorus asiaticus population in North China exhib-its mitochondrial subtype differentiation. The lack of difference in genetic structure across different regions in North China is consistent with a high level of migratory activity by O. decorus asiaticus in the region.

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