A Transposable Element Insertion is Associated with An alternative Life History Strategy
Overview
Authors
Affiliations
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.
Verta J, Moustakas-Verho J, Donner I, Frapin M, Ruokolainen A, Debes P Proc Natl Acad Sci U S A. 2024; 121(48):e2402386121.
PMID: 39560647 PMC: 11621623. DOI: 10.1073/pnas.2402386121.
Genetic Variation in Jamaican Populations of the Coffee Berry Borer, Hypothenemus hampei.
Errbii M, Myrie A, Robinson D, Schultner E, Schrader L, Oettler J Genome Biol Evol. 2024; 16(11).
PMID: 39486017 PMC: 11529894. DOI: 10.1093/gbe/evae217.
Zhu X, Yang Y, Li Q, Li J, Du L, Zhou Y BMC Biol. 2024; 22(1):196.
PMID: 39256805 PMC: 11389331. DOI: 10.1186/s12915-024-01998-8.
Okude G, Yamasaki Y, Toyoda A, Mori S, Kitano J BMC Genomics. 2024; 25(1):685.
PMID: 38992624 PMC: 11241946. DOI: 10.1186/s12864-024-10602-w.
Current evidence of climate-driven colour change in insects and its impact on sexual signals.
Haque M, Khan M, Herberstein M Ecol Evol. 2024; 14(7):e11623.
PMID: 38957695 PMC: 11219098. DOI: 10.1002/ece3.11623.