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Mol Ecol Resour

Title:		First chromosome scale genomes of ithomiine butterflies (Nymphalidae: Ithomiini): Comparative models for mimicry genetic studies
Author(s):		Gauthier J; Meier J; Legeai F; McClure M; Whibley A; Bretaudeau A; Boulain H; Parrinello H; Mugford ST; Durbin R; Zhou C; McCarthy S; Wheat CW; Piron-Prunier F; Monsempes C; Francois MC; Jay P; Nous C; Persyn E; Jacquin-Joly E; Meslin C; Montagne N; Lemaitre C; Elias M;
Address:		"Natural History Museum of Geneva, Geneva, Switzerland. Department of Zoology, University of Cambridge, Cambridge, UK. BIPAA, IGEPP, INRAE, Institut Agro, Univ Rennes, Rennes, France. Univ Rennes, Inria, CNRS, IRISA, Rennes, France. Institut Systematique Evolution Biodiversite (ISYEB), Centre National de la Recherche Scientifique, MNHN, EPHE, Sorbonne Universite, Universite des Antilles, Paris, France. Laboratoire Ecologie, Evolution, Interactions des Systemes Amazoniens (LEEISA), Universite de Guyane, CNRS, IFREMER, Cayenne, France. School of Biological Sciences, University of Auckland, Auckland, New Zealand. Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland. MGX-Montpellier GenomiX, Univ. Montpellier, CNRS, INSERM, Montpellier, France. Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, UK. Department of Genetics, University of Cambridge, Cambridge, UK. Tree of Life Programme, Wellcome Sanger Institute, Hinxton, UK. Department of Zoology, Stockholm University, Stockholm, Sweden. Institute of Ecology and Environmental Sciences of Paris, Sorbonne Universite, INRAE, CNRS, IRD, UPEC, Universite de Paris, Paris, France. Ecologie Systematique Evolution, Batiment 360, CNRS, AgroParisTech, Universite Paris-Saclay, Orsay, France. Laboratoire Cogitamus, Paris, France. CIRAD, UMR PVBMT, St Pierre, France"
Journal Title:		Mol Ecol Resour
Year:		2023
Volume:		20230127
Issue:		4
Page Number:		872 - 885
DOI:		10.1111/1755-0998.13749
ISSN/ISBN:		1755-0998 (Electronic) 1755-098X (Linking)
Abstract:		"The ithomiine butterflies (Nymphalidae: Danainae) represent the largest known radiation of Mullerian mimetic butterflies. They dominate by number the mimetic butterfly communities, which include species such as the iconic neotropical Heliconius genus. Recent studies on the ecology and genetics of speciation in Ithomiini have suggested that sexual pheromones, colour pattern and perhaps hostplant could drive reproductive isolation. However, no reference genome was available for Ithomiini, which has hindered further exploration on the genetic architecture of these candidate traits, and more generally on the genomic patterns of divergence. Here, we generated high-quality, chromosome-scale genome assemblies for two Melinaea species, M. marsaeus and M. menophilus, and a draft genome of the species Ithomia salapia. We obtained genomes with a size ranging from 396 to 503 Mb across the three species and scaffold N50 of 40.5 and 23.2 Mb for the two chromosome-scale assemblies. Using collinearity analyses we identified massive rearrangements between the two closely related Melinaea species. An annotation of transposable elements and gene content was performed, as well as a specialist annotation to target chemosensory genes, which is crucial for host plant detection and mate recognition in mimetic species. A comparative genomic approach revealed independent gene expansions in ithomiines and particularly in gustatory receptor genes. These first three genomes of ithomiine mimetic butterflies constitute a valuable addition and a welcome comparison to existing biological models such as Heliconius, and will enable further understanding of the mechanisms of adaptation in butterflies"
Keywords:		"Animals *Butterflies/genetics Adaptation, Physiological Phenotype Genomics Chromosomes/genetics Hi-C chromosome-level genome ithomiine butterflies mimicry olfaction;"
Notes:		"MedlineGauthier, Jeremy Meier, Joana Legeai, Fabrice McClure, Melanie Whibley, Annabel Bretaudeau, Anthony Boulain, Helene Parrinello, Hugues Mugford, Sam T Durbin, Richard Zhou, Chenxi McCarthy, Shane Wheat, Christopher W Piron-Prunier, Florence Monsempes, Christelle Francois, Marie-Christine Jay, Paul Nous, Camille Persyn, Emma Jacquin-Joly, Emmanuelle Meslin, Camille Montagne, Nicolas Lemaitre, Claire Elias, Marianne eng ANR-10-INBS-09/Agence Nationale de la Recherche/ Human Frontier Science Program/ England 2022/12/20 Mol Ecol Resour. 2023 May; 23(4):872-885. doi: 10.1111/1755-0998.13749. Epub 2023 Jan 27"