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Background <p>Broadening our taxonomic scope beyond model species offers deeper insights into the evolutionary dynamics of genomic processes such as recombination and the proliferation of transposable elements (TEs). TEs can drive substantial genomic rearrangements, yet the interplay between TEs and recombination remains poorly understood.</p> Results <p>To investigate population-specific recombination patterns, we analysed the distribution of the species-specific <i>Cla</i>-element in the non-biting midge <i>Chironomus riparius</i>. This TE is known for its dynamic behaviour, exhibiting high numbers of unique insertions and population-specific distribution patterns. Its distribution showed no consistent association with recombination rates at the chromosome-wide scale. However, the <i>Cla</i>-element was often found outside haplotype blocks, suggesting it may be spatially separated from regions with low recombination.</p> Conclusions <p>No strong association was found between the overall recombination landscape in <i>C. riparius</i> and the transposition activity of repetitive elements. Highlighting how the dynamics of transposable elements contribute to the complexity of genome evolution.</p>

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The interplay of recombination landscape and a transposable element in European populations of Chironomus riparius

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月6日

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  • Laura Chiara Pettrich,
  • Ann-Marie Waldvogel

摘要

Background

Broadening our taxonomic scope beyond model species offers deeper insights into the evolutionary dynamics of genomic processes such as recombination and the proliferation of transposable elements (TEs). TEs can drive substantial genomic rearrangements, yet the interplay between TEs and recombination remains poorly understood.

Results

To investigate population-specific recombination patterns, we analysed the distribution of the species-specific Cla-element in the non-biting midge Chironomus riparius. This TE is known for its dynamic behaviour, exhibiting high numbers of unique insertions and population-specific distribution patterns. Its distribution showed no consistent association with recombination rates at the chromosome-wide scale. However, the Cla-element was often found outside haplotype blocks, suggesting it may be spatially separated from regions with low recombination.

Conclusions

No strong association was found between the overall recombination landscape in C. riparius and the transposition activity of repetitive elements. Highlighting how the dynamics of transposable elements contribute to the complexity of genome evolution.