Genetic basis of an adaptive polymorphism controlling butterfly silver iridescence DOI Creative Commons
Luca Livraghi, Joseph J. Hanly, Ling S. Loh

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Summary Identifying the genes and mutations that drive phenotypic variation which are subject to selection is crucial for understanding evolutionary processes. Mormon Fritillary butterflies ( Speyeria mormonia ) exhibit a striking wing color polymorphism throughout their range: typical morphs bear silver spots on ventral surfaces, can co-occur with unsilvered displaying dull coloration 1 . Through genome-wide association studies in two polymorphic populations, we fine-map this difference silvering 3’ region of transcription factor gene optix The expression confined regions surround spots, these patterns transformed identity upon RNAi knockdown, implicating as repressor scales butterfly. We show haplotype shows signatures recent selective sweeps, allele shared monomorphic, species hydaspe , suggesting introgressions facilitate exchange variants adaptive potential across species. Remarkably, findings parallel role cis -regulatory modulation shaping aposematic red Heliconius 2–7 lineage separated from 45 million years ago 8 genetic basis thus be more predictable than often presumed, even traits appear divergent large distances. Graphical Abstract

Language: Английский

Genetic basis of an adaptive polymorphism controlling butterfly silver iridescence DOI Creative Commons
Luca Livraghi, Joseph J. Hanly, Ling S. Loh

et al.

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Identifying the genes and mutations that drive phenotypic variation which are subject to selection is crucial for understanding evolutionary processes. Mormon Fritillary butterflies (Speyeria mormonia) exhibit a striking wing color polymorphism throughout their range: typical morphs bear silver spots on ventral surfaces can co-occur with unsilvered displaying dull coloration.1 Through genome-wide association studies in two polymorphic populations, we fine-map this difference silvering 3' region of transcription factor gene optix. The expression optix confined regions surround spots, these patterns transformed identity upon RNA interference (RNAi) knockdown, implicating as repressor scales butterfly. We show haplotype shows signatures recent selective sweeps allele shared an population Speyeria hydaspe, suggesting introgressions may facilitate exchange variants adaptive potential across species. Remarkably, findings parallel role allelic sharing cis-regulatory modulation shaping aposematic red Heliconius butterflies,2,3,4,5,6,7 lineage separated from 45 million years ago.8 genetic basis thus be more predictable than often presumed, even traits appear divergent large distances.

Language: Английский

Citations

1
Developmental genetics of cuticular micro- and nano-structures in insects DOI

Cédric Finet

Current Opinion in Insect Science, Journal Year: 2024, Volume and Issue: 65, P. 101254 - 101254

Published: Aug. 31, 2024

Language: Английский

Citations

2
Genetic basis of an adaptive polymorphism controlling butterfly silver iridescence DOI Creative Commons
Luca Livraghi, Joseph J. Hanly, Ling S. Loh

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Summary Identifying the genes and mutations that drive phenotypic variation which are subject to selection is crucial for understanding evolutionary processes. Mormon Fritillary butterflies ( Speyeria mormonia ) exhibit a striking wing color polymorphism throughout their range: typical morphs bear silver spots on ventral surfaces, can co-occur with unsilvered displaying dull coloration 1 . Through genome-wide association studies in two polymorphic populations, we fine-map this difference silvering 3’ region of transcription factor gene optix The expression confined regions surround spots, these patterns transformed identity upon RNAi knockdown, implicating as repressor scales butterfly. We show haplotype shows signatures recent selective sweeps, allele shared monomorphic, species hydaspe , suggesting introgressions facilitate exchange variants adaptive potential across species. Remarkably, findings parallel role cis -regulatory modulation shaping aposematic red Heliconius 2–7 lineage separated from 45 million years ago 8 genetic basis thus be more predictable than often presumed, even traits appear divergent large distances. Graphical Abstract

Language: Английский

Citations

0