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A transposable element insertion is associated with an alternative life history strategy
Stockholm Univ, Dept Zool, S-10691 Stockholm, Sweden;NYU, Dept Biol, New York, NY 10003 USA.
Stockholm Univ, Dept Zool, S-10691 Stockholm, Sweden.
NYU, Dept Biol, New York, NY 10003 USA;Univ Calif San Diego, Div Biol Sci, La Jolla, CA 92093 USA.
Stockholm Univ, Dept Zool, S-10691 Stockholm, Sweden.
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2019 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 10, article id 5757Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2019. Vol. 10, article id 5757
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Zoology
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URN: urn:nbn:se:uu:diva-401179DOI: 10.1038/s41467-019-13596-2ISI: 000503009700005PubMedID: 31848330OAI: oai:DiVA.org:uu-401179DiVA, id: diva2:1383091
Funder
Knut and Alice Wallenberg Foundation, 2012.0058Swedish Research Council, 2012-3715Available from: 2020-01-07 Created: 2020-01-07 Last updated: 2020-01-07Bibliographically approved

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