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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, François MC, Jay P, Noûs C, Persyn E, Jacquin-Joly E, Meslin C, Montagné N, Lemaitre C, Elias M. First chromosome scale genomes of ithomiine butterflies (Nymphalidae: Ithomiini): Comparative models for mimicry genetic studies. Mol Ecol Resour 2023; 23:872-885. [PMID: 36533297 DOI: 10.1111/1755-0998.13749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/30/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022]
Abstract
The ithomiine butterflies (Nymphalidae: Danainae) represent the largest known radiation of Müllerian 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.
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Affiliation(s)
| | - Joana Meier
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Fabrice Legeai
- BIPAA, IGEPP, INRAE, Institut Agro, Univ Rennes, Rennes, France
- Univ Rennes, Inria, CNRS, IRISA, Rennes, France
| | - Melanie McClure
- Institut Systématique Évolution Biodiversité (ISYEB), Centre National de la Recherche Scientifique, MNHN, EPHE, Sorbonne Université, Université des Antilles, Paris, France
- Laboratoire Écologie, Évolution, Interactions des Systèmes Amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, Cayenne, France
| | - Annabel Whibley
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Anthony Bretaudeau
- BIPAA, IGEPP, INRAE, Institut Agro, Univ Rennes, Rennes, France
- Univ Rennes, Inria, CNRS, IRISA, Rennes, France
| | - Hélène Boulain
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Hugues Parrinello
- MGX-Montpellier GenomiX, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Sam T Mugford
- Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, UK
| | - Richard Durbin
- Department of Genetics, University of Cambridge, Cambridge, UK
- Tree of Life Programme, Wellcome Sanger Institute, Hinxton, UK
| | - Chenxi Zhou
- Department of Genetics, University of Cambridge, Cambridge, UK
- Tree of Life Programme, Wellcome Sanger Institute, Hinxton, UK
| | - Shane McCarthy
- Department of Genetics, University of Cambridge, Cambridge, UK
- Tree of Life Programme, Wellcome Sanger Institute, Hinxton, UK
| | | | - Florence Piron-Prunier
- Institut Systématique Évolution Biodiversité (ISYEB), Centre National de la Recherche Scientifique, MNHN, EPHE, Sorbonne Université, Université des Antilles, Paris, France
| | - Christelle Monsempes
- Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, INRAE, CNRS, IRD, UPEC, Université de Paris, Paris, France
| | - Marie-Christine François
- Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, INRAE, CNRS, IRD, UPEC, Université de Paris, Paris, France
| | - Paul Jay
- Ecologie Systématique Evolution, Bâtiment 360, CNRS, AgroParisTech, Université Paris-Saclay, Orsay, France
| | | | - Emma Persyn
- Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, INRAE, CNRS, IRD, UPEC, Université de Paris, Paris, France
- CIRAD, UMR PVBMT, St Pierre, France
| | - Emmanuelle Jacquin-Joly
- Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, INRAE, CNRS, IRD, UPEC, Université de Paris, Paris, France
| | - Camille Meslin
- Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, INRAE, CNRS, IRD, UPEC, Université de Paris, Paris, France
| | - Nicolas Montagné
- Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, INRAE, CNRS, IRD, UPEC, Université de Paris, Paris, France
| | | | - Marianne Elias
- Institut Systématique Évolution Biodiversité (ISYEB), Centre National de la Recherche Scientifique, MNHN, EPHE, Sorbonne Université, Université des Antilles, Paris, France
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Bastide H, López-Villavicencio M, Ogereau D, Lledo J, Dutrillaux AM, Debat V, Llaurens V. Genome assembly of 3 Amazonian Morpho butterfly species reveals Z-chromosome rearrangements between closely related species living in sympatry. Gigascience 2022; 12:giad033. [PMID: 37216769 PMCID: PMC10202424 DOI: 10.1093/gigascience/giad033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/13/2023] [Accepted: 05/12/2023] [Indexed: 05/24/2023] Open
Abstract
The genomic processes enabling speciation and species coexistence in sympatry are still largely unknown. Here we describe the whole-genome sequencing and assembly of 3 closely related species from the butterfly genus Morpho: Morpho achilles (Linnaeus, 1758), Morpho helenor (Cramer, 1776), and Morpho deidamia (Höbner, 1819). These large blue butterflies are emblematic species of the Amazonian rainforest. They live in sympatry in a wide range of their geographical distribution and display parallel diversification of dorsal wing color pattern, suggesting local mimicry. By sequencing, assembling, and annotating their genomes, we aim at uncovering prezygotic barriers preventing gene flow between these sympatric species. We found a genome size of 480 Mb for the 3 species and a chromosomal number ranging from 2n = 54 for M. deidamia to 2n = 56 for M. achilles and M. helenor. We also detected inversions on the sex chromosome Z that were differentially fixed between species, suggesting that chromosomal rearrangements may contribute to their reproductive isolation. The annotation of their genomes allowed us to recover in each species at least 12,000 protein-coding genes and to discover duplications of genes potentially involved in prezygotic isolation like genes controlling color discrimination (L-opsin). Altogether, the assembly and the annotation of these 3 new reference genomes open new research avenues into the genomic architecture of speciation and reinforcement in sympatry, establishing Morpho butterflies as a new eco-evolutionary model.
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Affiliation(s)
| | - Manuela López-Villavicencio
- Institut de Systématique, Evolution et Biodiversité (UMR 7205 CNRS/MNHN/SU/EPHE/UA), Muséum National d’Histoire Naturelle–CP50, 75005 Paris, France
| | | | - Joanna Lledo
- GeT-PlaGe, Bât G2, INRAe, 31326 Castanet-Tolosan Cedex, France
| | - Anne-Marie Dutrillaux
- Institut de Systématique, Evolution et Biodiversité (UMR 7205 CNRS/MNHN/SU/EPHE/UA), Muséum National d’Histoire Naturelle–CP50, 75005 Paris, France
| | - Vincent Debat
- Institut de Systématique, Evolution et Biodiversité (UMR 7205 CNRS/MNHN/SU/EPHE/UA), Muséum National d’Histoire Naturelle–CP50, 75005 Paris, France
| | - Violaine Llaurens
- Institut de Systématique, Evolution et Biodiversité (UMR 7205 CNRS/MNHN/SU/EPHE/UA), Muséum National d’Histoire Naturelle–CP50, 75005 Paris, France
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Maisonneuve L, Smadi C, Llaurens V. Evolutionary origins of sexual dimorphism: Lessons from female-limited mimicry in butterflies. Evolution 2022; 76:2404-2423. [PMID: 36005294 DOI: 10.1111/evo.14599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 07/18/2022] [Indexed: 01/22/2023]
Abstract
The striking female-limited mimicry observed in some butterfly species is a text-book example of sexually dimorphic trait submitted to intense natural selection. Two main evolutionary hypotheses, based on natural and sexual selection respectively, have been proposed. Predation pressure favoring mimicry toward defended species could be higher in females because of their slower flight, and thus overcome developmental constraints favoring the ancestral trait that limits the evolution of mimicry in males but not in females. Alternatively, the evolution of mimicry in males could be limited by female preference for non-mimetic males. However, the evolutionary origin of female preference for non-mimetic males remains unclear. Here, we hypothesize that costly sexual interactions between individuals from distinct sympatric species might intensify because of mimicry, therefore promoting female preference for non-mimetic trait. Using a mathematical model, we compare the evolution of female-limited mimicry when assuming either alternative selective hypotheses. We show that the patterns of divergence of male and female trait from the ancestral traits can differ between these selection regimes. We specifically highlight that divergence in female trait is not a signature of the effect of natural selection. Our results also evidence why female-limited mimicry is more frequently observed in Batesian mimics.
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Affiliation(s)
- Ludovic Maisonneuve
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, CP 50, 57 rue Cuvier, Paris, 75005, France
| | - Charline Smadi
- Univ. Grenoble Alpes, INRAE, LESSEM, France, Saint-Martin-d'Hères, 38402.,Univ. Grenoble Alpes, CNRS, Institut Fourier, Gières, 38610, France
| | - Violaine Llaurens
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, CP 50, 57 rue Cuvier, Paris, 75005, France
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