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5/7 We found that, while most chromosomal change across Erebia is anagenetic, fusions and fissions seem to differ in the degree to which they are cladogenetic, with fissions being more directly linked to speciation.

6/7 The pattern becomes more complicated when clades within Erebia are considered: karyotypically diverse clades (e.g. the purple clade) show higher associated speciation rates while in more conservative clades (e.g. the red clade) diversification is driven more by other factors.

7/7 Overall, we show that fusions and fissions can have a considerable impact on speciation rates, particularly when groups are chromosomally diverse, and that the importance of fusions and fissions can differ even among clades within a single genus.

Complex interactions b/w 3D genome structures & sequence evol., genomic rearrangements, & processes such as recombination suppression intrigued us. We immensely enjoyed writing this work! Hope it evokes such intrigue in you & opens a new perspective for speciation research! 2/4

We thank the Fondation Pierre Mercier pour la Science & @SNSF for funding, Alice Laigle (moved to BlueSky) & Charlotte Wright for giving precious feedback on earlier drafts, & the editorial team of Trends in Genetics for smooth processing  3/4

Srinivas Narayanan Alice Laigle (moved to BlueSky) Charlotte Wright Trends in Genetics For me personally, I started thinking about genomic rearrangements, & 3D genome structures during my Marie Skłodowska-Curie Actions grant at the Natural History Museum London during wonderful discussions with Jeffrey W. Streicher & Prof. Anjali Goswami ! Thank you so much for planting this seed in my head! 🙌🏾4/4

So exciting! What a great outcome of a group effort! Now we need to get the empirical side sorted 😊

Looking forward to exciting discoveries in Erebia! Go team 🦋

Well done! Let's explore the role of 3D genomic changes during speciation in #holocentrics and beyond

Throwback to last year's fieldwork in Georgia 🇬🇪 collecting Erebia 🦋 for genome annotation as part of our Biodiversity Genomics Europe (BGE) Case Study! Thanks to our Georgian experts Tina and giorgi iankoshvili from CaBoL and to European Research Executive Agency, SBFI SEFRI SERI, SIB, EU green research

IBC2024 has been joyful to meet our incredible collaborators, plant peers 🌍🇮🇳, learn loads about 🌱 ecology, evolution, genomes, adaptation, & more! Follow us for updates on genome evolution in the holocentric Carex genus! Marcial Escudero Kay Lucek #IBC2024

What happens when strongly divergent species form zones of secondary contact? 👉 Hannah Augustijnen last paper with me Molecular Ecology onlinelibrary.wiley.com/doi/full/10.11… on alpine #erebia 🦋 using whole genome resequence data for 300 individuals #biodiversitygenomics

Great article The Guardian featuring Project Psyche projectpsyche.org aiming to sequence reference genomes for all European Lepidoptera 🦋 👉theguardian.com/environment/ar… honored to be part of this exciting community project Université Neuchâtel

Many thanks to European Reference Genome Atlas for highlighting our Biodiversity Genomics Europe (BGE) project in this new blog post! Go check it out! 🦋🧬🏔️⬇️

Thanks to all the authors providing a diverse and exciting overview where the field stands

Looking forward to get the #holocentric community together Université Neuchâtel Thanks to Swiss National Science Foundation we can also offer some travel awards! 👉 holocentricity.ch

Great effort! So eager to see #Erebia taking off

Congratulations Ashwini V Mohan ಅಶ್ವಿನಿ 🦎🧬🙋🏾‍♀️ for a great talk Biology25 👏 #Holocentric #Carex 🧬🌱

Camille Cornet, Kay Lucek, Paula Escuer & I had the pleasure of organising the first conference on holocentric chromosomes in Université Neuchâtel . 2 days of terrific talks & 🗣️ all about holocentricity, its #evolution across the Tree of Life, role in #speciation & #adaptation 🙌🏾🌱🦋🕷️

#ERGAReads | Despite rapid chromosome changes, sedges maintain conserved synteny - likely due to repetitive DNA shaping recombination and gene order. This may explain how they retain species cohesion despite high rates of #chromosome evolution. 🧬 🔗 doi.org/10.1111/mec.17…