Ecology and Evolution (2021) 11, 10244-10257

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Yangzhou Wang, Kyung Seok Kim, Qiyun Li, Yunyue Zhang, Zhen-Ying Wang and Brad Steven Coates (2021)
Influence of voltine ecotype and geographic distance on genetic and haplotype variation in the Asian corn borer
Ecology and Evolution 11 (15), 10244-10257
Abstract: 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Zhen-Ying Wang, Brad S. Coates

Research topic(s) for pests/diseases/weeds:
molecular biology - genes
population dynamics/ epidemiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Ostrinia furnacalis Maize/corn (Zea mays) China (NE)
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