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首页> 外文期刊>BMC Evolutionary Biology >High genetic diversity and strong genetic structure of Strongyllodes variegatus populations in oilseed rape production areas of China
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High genetic diversity and strong genetic structure of Strongyllodes variegatus populations in oilseed rape production areas of China

机译：中国石油油菜生产区强大遗传多样性和强遗传结构Variegatus群体

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摘要

Strongyllodes variegatus (Fairmaire) is a major insect pest of oilseed rape in China. Despite its economic importance, the contribution of its population genetics in the development of any suitable protection control strategy for the management of oilseed rape crops is poorly studied. It is a much urgent need to prevent its spread to the rest of the world. Using the sequences of mitochondrial DNA cytochrome c oxidase subunit I (COI) and cytochrome b (Cytb) as genetic markers, we analyzed the population genetic diversity and structure of 437 individuals collected from 15 S. variegatus populations located in different oilseed rape production areas in China. In addition, we estimated the demographic history using neutrality test and mismatch distribution analysis. The high level of genetic diversity was detected among the COI and Cytb sequences of S. variegatus. The population structure analyses strongly suggested three distinct genetic and geographical regions in China with limited gene flow. The Mantel test showed that the genetic distance was greatly influenced by the geographical distance. The demographic analyses showed that S. variegatus had experienced population fluctuation during the Pleistocene Epoch, which was likely to be related to the climatic changes. Overall, these results demonstrate that the strong genetic structure of S. variegatus populations in China, which is attributed by the isolation through the geographical distance among populations, their weak flight capacity and subsequent adaptation to the regional ecological conditions.
机译：strongyllodes variegatus（Fairmaire）是中国石油油菜的主要虫害。尽管经济重视，但其遗传学对生产油菜作物管理的任何合适保护控制策略的贡献仍然很差。迫切需要防止其蔓延到世界其他地区。使用线粒体DNA细胞色素C氧化酶I（COI）和细胞色素B（CYTB）作为遗传标志物的序列，我们分析了从位于不同油菜生产区域的15岁variegatus群中收集的437名人口遗传多样性和结构的群体遗传多样性和结构中国。此外，我们估计使用中性测试和不匹配分布分析的人口历史。在S.Variegatus的COI和CYTB序列中检测到高水平的遗传多样性。人口结构分析了中国有限的基因流动的三个不同遗传和地理区域。 Mantel测试表明，遗传距离受到地理距离的大大影响。人口统计分析表明，瓦莱肌经历了普利科肾上腺纪元期间的人口波动，这可能与气候变化有关。总体而言，这些结果表明，中国S.Variegatus群体的强遗传结构，通过群体的地理距离，其飞行能力薄弱和随后对区域生态条件的适应来归因于孤立。

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