Influence of voltine ecotype and geographic distance on genetic and haplotype variation in the Asian corn borer

文献类型： 外文期刊

第一作者： Wang, Yangzhou

作者： Wang, Yangzhou;Li, Qiyun;Zhang, Yunyue;Kim, Kyung Seok;Wang, Zhen-Ying;Coates, Brad Steven

作者机构：

关键词： divergent phenotypic selection; ecological adaptation; gene flow; population genetics

期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.881； 五年影响因子：3.252 ）

ISSN： 2045-7758

年卷期： 2021 年 11 卷 15 期

页码：

收录情况： SCI

摘要： Diapause is an adaptive dormancy strategy by which arthropods endure extended periods of adverse climatic conditions. Seasonal variation in larval diapause initiation and duration in Ostrinia furnacalis may influence adult mating generation number (voltinism) across different local environments. The degree to which voltine ecotype, geographic distance, or other ecological factors influence O. furnacalis population genetic structure remains uncertain. Genetic differentiation was estimated between voltine ecotypes collected from 8 locations. Mitochondrial haplotypes were significantly different between historically allopatric univoltine and bivoltine locations, but confounded by a strong correlation with geographic distance. In contrast, single nucleotide polymorphism (SNP) genotypes show low but significant levels of variation and a lack of influence of geographic distance between allopatric voltine locations. Regardless, 11 of 257 SNP loci were predicted to be under selection, suggesting population genetic homogenization except at loci proximal to factors putatively under selection. These findings provide evidence of haplotype divergent voltine ecotypes that may be maintained in allopatric and sympatric areas despite relatively high rates of nuclear gene flow, yet influence of voltinism on maintenance of observed haplotype divergence remains unresolved.

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