A major locus controls a biologically active pheromone component in Heliconius melpomene
A major locus controls a biologically active pheromone component in Heliconius melpomene
Abstract Pheromones are important for courtship and mate choice in many insects, but we know relatively little of their role in butterflies. The butterfly Heliconius melpomene uses a complex blend of wing androconial compounds during courtship. Electroantennography in H. melpomene and its close relative H. cydno showed that responses to androconial extracts were not species-specific. Females of both species responded more strongly to the H. cydno extract, suggesting conservation of peripheral nervous system elements across the two species. Individual blend components provoked little to no response, with the exception of octadecanal, a major component of the H. melpomene blend. Supplementing octadecanal on the wings of octadecanal-rich H. melpomene males led to an increase in the time until mating, demonstrating the bioactivity of octadecanal in Heliconius. Using quantitative trait locus (QTL) mapping, we identified a single locus on chromosome 20 responsible for 41% of the parental species’ difference in octadecanal production. This QTL does not overlap with any of the major wing color or mate choice loci, nor does it overlap with known regions of elevated or reduced FST. A set of 16 candidate fatty acid biosynthesis genes lies underneath the QTL.
Kucka Marek、Jiggins Chris D.、Byers Kelsey J.R.P.、Darragh Kathy、Almeida Diana Abondano、Rastas Pasi、Chan Yingguang Frank、Musgrove Jamie、Garza Sylvia Fernanda、Schulz Stefan、Warren Ian A.、Merrill Richard M.、McMillan W. Owen
Friedrich Miescher Laboratory of the Max Planck SocietyDepartment of Zoology, University of Cambridge||Smithsonian Tropical Research InstituteDepartment of Zoology, University of Cambridge||Smithsonian Tropical Research InstituteDepartment of Zoology, University of Cambridge||Smithsonian Tropical Research InstituteSmithsonian Tropical Research Institute||Institute for Ecology, Evolution and Diversity, Goethe Universit?tInstitute of Biotechnology, University of HelsinkiFriedrich Miescher Laboratory of the Max Planck SocietySmithsonian Tropical Research InstituteSmithsonian Tropical Research Institute||Department of Collective Behaviour, Max Planck Institute of Animal Behaviour, Konstanz, Germany & Centre for the Advanced Study of Collective Behaviour, University of KonstanzInstitute of Organic Chemistry, Department of Life Sciences, Technische Universit?t BraunschweigDepartment of Zoology, University of CambridgeDivision of Evolutionary Biology, Ludwig-Maximilians-Universit?t M¨1nchenSmithsonian Tropical Research Institute
遗传学分子生物学昆虫学
Kucka Marek,Jiggins Chris D.,Byers Kelsey J.R.P.,Darragh Kathy,Almeida Diana Abondano,Rastas Pasi,Chan Yingguang Frank,Musgrove Jamie,Garza Sylvia Fernanda,Schulz Stefan,Warren Ian A.,Merrill Richard M.,McMillan W. Owen.A major locus controls a biologically active pheromone component in Heliconius melpomene[EB/OL].(2025-03-28)[2025-05-10].https://www.biorxiv.org/content/10.1101/739037.点此复制
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