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A transposable element insertion is associated with an alternative life history strategy.

机译:转座因子插入一个替代生活史对策有关。

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摘要

Tradeoffs affect resource allocation during development and result in fitness consequences that drive the evolution of life history strategies. Yet despite their importance, we know little about the mechanisms underlying life history tradeoffs. Many species of Colias butterflies exhibit an alternative life history strategy (ALHS) where females divert resources from wing pigment synthesis to reproductive and somatic development. Due to this reallocation, a wing color polymorphism is associated with the ALHS: either yellow/orange or white. Here we map the locus associated with this ALHS in Colias crocea to a transposable element insertion located downstream of the Colias homolog of BarH-1, a homeobox transcription factor. Using CRISPR/Cas9 gene editing, antibody staining, and electron microscopy we find white-specific expression of BarH-1 suppresses the formation of pigment granules in wing scales and gives rise to white wing color. Lipid and transcriptome analyses reveal physiological differences associated with the ALHS. Together, these findings characterize a mechanism for a female-limited ALHS.

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  • 年(卷),期 2020(),
  • 年度 2020
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  • 总页数 11
  • 原文格式 PDF
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  • 网站名称 剑桥大学机构知识库
  • 栏目名称 所有文件
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  • 入库时间 2022-08-19 17:40:52
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