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Lukas Schrader

@shaggyschrader.bsky.social
688 followers 845 following 36 posts

I like ants. I like TEs. Evolutionary Biologist at the Institute for Evolution & Biodiversity (University of Münster) schraderl.github.io

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Reposted by Lukas Schrader
Thea F. Rogers @theafrogers.bsky.social · 09/10/2026
🧵 Out today in Nature Communications! How did an ancient reshuffling of the genome shape 3D genome architecture and gene regulation in squid, cuttlefish & octopus? 🦑🐙 We combined Micro-C, RNA-seq & ATAC-seq across species, developmental stages & tissues. doi.org/10.1038/s41467-026-77625-7
doi.org
Genome reorganisation and expansion shape 3D genome architecture and define a distinct regulatory landscape in coleoid cephalopods - Nature Communications
How genome organisation contributes to the evolution of biological complexity is poorly understood. This study shows evolutionary changes in 3D genome architecture rewires gene regulation in coleoid c...
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Lukas Schrader @shaggyschrader.bsky.social · 01/10/2026
🥳 Here’s a thread with a deeper dive! bsky.app/profile/shag...
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Reposted by Lukas Schrader
SPP 2349 Gevol @gevol.bsky.social · 01/10/2026
📢 Paper alert. Please check the new paper by our GEvol student @jannelrinke.bsky.social and GEvol PI @shaggyschrader.bsky.social about TEs in 🐜 macrodiversity published in Science Advances! Congratulations👏. www.science.org/doi/10.1126/...
science.org
Transposable elements as evolutionary catalysts of ant macrodiversity
Transposable elements (TEs) are key contributors to genome evolution, yet their macroevolutionary roles in adaptive radiations remain poorly understood, as high-quality genomic resources at sufficient...
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Reposted by Lukas Schrader
Antoine Molaro @antoinemolaro.bsky.social · 25/09/2026
Big day for transposon biology! (two paper thread) #mustread www.science.org/doi/10.1126/...
science.org
Transposable elements as evolutionary catalysts of ant macrodiversity
Transposable elements (TEs) are key contributors to genome evolution, yet their macroevolutionary roles in adaptive radiations remain poorly understood, as high-quality genomic resources at sufficient...
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Lukas Schrader @shaggyschrader.bsky.social · 26/09/2026
Also: I think I remember that recombination rate in Solenopsis is much lower than in other social Hymenoptera.
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Lukas Schrader @shaggyschrader.bsky.social · 26/09/2026
Yes! Makes a lot of sense! I think TE Islands generally don’t (or rarely) recombine but are structurally very labile. We are working on more Cardiocondyla genomes where TE islands are evolving crazy fast. Solenopsis is a curious case though beacause TE content looks not that bimodal.
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
This might have been the favorite project of my career so far as I loved working these things out! Do reach out if you have any questions, or if you're curious about the approach for your own genomes. Press release: www.uni-muenster.de/news/view.ph... 🧵11/11
uni-muenster.de
“Jumping genes” helped ants in their evolutionary triumph after the extinction of the dinosaurs
A research team led by Dr Lukas Schrader from the Institute for Evolution and Biodiversity (IEB) shows that the evolution of ants received a boost thanks to the activity of “jumping genes” in their ge...
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
So, transposons may have a recurring role in evolutionary radiations. Ants are now the first major invertebrate clade where we can show this, thanks to “Kimura on a tree”. 🧵10/11
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
The TE activity history in ants fits a broader pattern: diversifications in other animal groups (e.g., primates & bats) have also been associated with TE bursts. 🧵9/11
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
Odd finding: species with fully sterile workers carry significantly fewer PLE retrotransposons — PLEs cause a strikingly similar sterility phenotype in Drosophila. Pure speculation for now, but a fun lead.🧵8/11
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
Bonus finding: ant genomes are structured into fast evolving TE-rich "islands" and TE-poor regions. Genes in the TE islands also show more positive selection. Such "two-speed genomes" are common in some fungi. True ant sickos will also know this has been described in Cardiocondyla ants. 🧵7/11
A queen of Cardiocondyla obscurior
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
We also find TE content correlating with expansion of gene families for chemical communication that ants rely on to navigate, recognize nestmates, and coordinate colony life. Dynamic genomes may have helped sharpen their chemical communication skills. 🧵6/11
Key expanded gene families in ant chemical communication.
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
Timing fits well with the post-asteroid ecological upheaval that opened huge niche space for ants! TEs look like the genomic mechanism linking that environmental shake-up to the radiation that followed — the burst comes first, which is what lets us argue direction and not just correlation. 🧵5/11
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
Using a new phylogenomic approach, we found independent bursts of TE activity in the ancestors of the largest ant groups right around the K-Pg boundary, ~66 mya, just before each lineage diversified explosively. (Someone called our new method “Kimura on a tree”, which I think is a great name!) 🧵4/11
Figure 2 from 10.1126/sciadv.aee0306
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
We asked whether genome-level TE dynamics track that variance, comparing genomes of 163 ant species across 12 of the 16 living subfamilies, reconstructing 100 million years of TE activity. 🧵3/11
doi.org
Redirecting
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
Ants diversified rapidly after the K-Pg extinction, but diversification rates vary enormously across lineages — some subfamilies contain thousands of species, others just one. 🧵2/11
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Lukas Schrader @shaggyschrader.bsky.social · 25/09/2026
1/ New paper: doi.org/10.1126/scia... 🐜🧬 Ants exploded into >15,000 species just after the dinosaur-killing asteroid hit Earth. We think we've found one catalyst behind that radiation: transposable elements. With @jannelrinke.bsky.social, @esthervandenbos.bsky.social & others not on here. 🧵1/11
A Pseudomyrmex ant walking casually on a drop of honey.
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Reposted by Lukas Schrader
Science X / Phys.org @sciencex.bsky.social · 24/09/2026
Jumping genes surged in ant ancestors about 66 million years ago, shortly before major groups diversified into thousands of species. doi.org/hckktk
phys.org
'Jumping genes' helped ants in their evolutionary triumph after the extinction of the dinosaurs
About 66 million years ago, the asteroid that ended the age of the dinosaurs paved the way for a spectacular expansion of new animal species.
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Reposted by Lukas Schrader
Rajendhran Rajakumar @rajeerajakumar.bsky.social · 25/09/2026
www.science.org/doi/10.1126/... #Ants #Genomics 🐜
science.org
Transposable elements as evolutionary catalysts of ant macrodiversity
Transposable elements (TEs) are key contributors to genome evolution, yet their macroevolutionary roles in adaptive radiations remain poorly understood, as high-quality genomic resources at sufficient...
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Reposted by Lukas Schrader
bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 24/09/2026
Somatic differentiation evolves rapidly and repeatedly through the modification of developmental plasticity www.biorxiv.org/content/10.64898/20…
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Lukas Schrader @shaggyschrader.bsky.social · 24/09/2026
This paper is really special to me, so it means a lot if it is received well. So thank you for your comment!!
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Reposted by Lukas Schrader
Dr. Tyler A. Elliott @transposableman.bsky.social · 24/09/2026
#TEsky Transposable elements as evolutionary catalysts of ant macrodiversity doi.org/10.1126/scia...
doi.org
Transposable elements as evolutionary catalysts of ant macrodiversity
Transposable elements (TEs) are key contributors to genome evolution, yet their macroevolutionary roles in adaptive radiations remain poorly understood, as high-quality genomic resources at sufficient...
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Reposted by Lukas Schrader
Universität Münster @uni-muenster.de · 24/09/2026
Ants form the largest family of social insects with more than 15,000 species worldwide. New research from @shaggyschrader.bsky.social now published in “Science Advances” (@science.org) shows that ants benefited from transposable elements in their DNA. More info: www.uni-muenster.de/news/view.ph...
uni-muenster.de
“Jumping genes” helped ants in their evolutionary triumph after the extinction of the dinosaurs
A research team led by Dr Lukas Schrader from the Institute for Evolution and Biodiversity (IEB) shows that the evolution of ants received a boost thanks to the activity of “jumping genes” in their ge...
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Reposted by Lukas Schrader
Lee Henry @henrylabsymbio.bsky.social · 26/08/2026
Without Westeberhardia, the ants instead increase their capacity to make tyrosine from dietary phenylalanine. So rather than being metabolically locked into an ancient symbiosis, Cardiocondyla can switch between symbiont- and environmentally-derived nutrients depending on its symbiotic state.
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Reposted by Lukas Schrader
Esther van den Bos @esthervandenbos.bsky.social · 18/08/2026
If you are interested in the evolution of superorganismality, come join my talk on how the developmental robustness of queens and workers is analogous to the development of metazoan germline and soma, today at 17:00 in K8 #IUSSI2026
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Lukas Schrader @shaggyschrader.bsky.social · 21/08/2026
It was beautiful!
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Reposted by Lukas Schrader
Volker Nehring @volkernehring.bsky.social · 20/08/2026
#IUSSI26 is almost over. Kind of sad..
Iussi Congress group photo
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Alex de Mendoza @alexdemendoza.bsky.social · 03/08/2026
Sailing in @biorxivpreprint.bsky.social ready for summer, our study on the iconic Portuguese man o' war 🪼 is out: www.biorxiv.org/content/10.6.... We use (epi)genomics to understand a critter that fascinates me since childhood. Massive team effort with @obog.bsky.social, Cummins and Neely groups. 🧵
the indo-pacific bluebottle (Physalia utriculus)
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Lukas Schrader @shaggyschrader.bsky.social · 30/07/2026
We have a PostDoc/Asst. Prof. position open in our group! DM or email me for more info. stellen.uni-muenster.de/jobposting/6...
Screenshot of the job advertisement at the Institute for Evolution & Biodiversity (Uni Münster, Germany).
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Reposted by Lukas Schrader
Rob Waterhouse @rmwaterhouse.bsky.social · 23/07/2026
The #Arthropod #Genomics i5K Community -🦋🧬🕷️🧬🪲🧬🦀- opportunities to harmonise reporting standards & promote their dissemination, ensuring that future arthropod #genomes are both comparable & maximally reusable for large-scale comparative & applied research academic.oup.com/genetics/adv...
academic.oup.com
Toward standardization in arthropod and biodiversity genome projects
Abstract. In recent years, many high-quality reference genome sequences for arthropod species have been generated. Although most genome papers describe the
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Reposted by Lukas Schrader
Peiwei Chen @peiwei-chen.bsky.social · 17/07/2026
How do transposons jump when they’re released from host control? I babysat two chromosomes for 2 years, making sure they are ok without most piRNAs. Here’s what we found & excited to share my 1st postdoc paper: “piRNA loss unleashes episodic transposition bursts” www.biorxiv.org/content/10.6...
biorxiv.org
piRNA loss unleashes episodic transposition bursts
In Metazoa, transposon expression is suppressed by the piRNA pathway, and disruption of this pathway leads to rampant transposon expression. However, it remains unclear whether increased transposon ex...
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Lukas Schrader @shaggyschrader.bsky.social · 06/07/2026
Here’s Janina: @jannelrinke.bsky.social :)
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Reposted by Lukas Schrader
Rob Waterhouse @rmwaterhouse.bsky.social · 04/07/2026
Horizontal gene transfer (HGT) in ants - several likely underpinning functional innovations, primarily by mediating immune-system adaptations or facilitating nutritional niche expansions academic.oup.com/gigascience/... #biodiversity #genomics
academic.oup.com
Comparative analysis of 163 ant genomes reveals recurrent horizontal gene transfer from bacteria to ants
AbstractBackground. Horizontal gene transfer (HGT) from bacteria can drive phenotypic innovation and adaptation in eukaryotes. Ants are likely carriers of
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Reposted by Lukas Schrader
RepeatMasker Project @repeatmasker.bsky.social · 05/06/2026
RepeatMasker 4.2.4 released! This version adds support for the new FamDB format used in Dfam 4.0. FamDB's component-based framework allows users to download only the portions of the TE database they need. See the www.repeatmasker.org page for more release details.
repeatmasker.org
RepeatMasker Home Page
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Reposted by Lukas Schrader
Alex Wild @alexwild.bsky.social · 28/05/2026
Ant Course is back! This year, in Mexico:
antcourse.org
Ant Course
2026 Dates: October 12–22 Deadline to apply: 1 July 2026 Location: Colorado State University Todos Santos Center, Todos Santos, Baja California Sur, Mexico
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Reposted by Lukas Schrader
Molecular Biology and Evolution @molbioevol.bsky.social · 20/05/2026
Pellen, @shaggyschrader.bsky.social @eyalprivman.bsky.social et al. analyse the most comprehensive ant odorant receptor dataset to date, showing that worker polymorphism involves extensive adaptation of chemical communication. 🔗 doi.org/10.1093/molbev/msag103 #evobio #molbio #ant
doi.org
Adaptive evolution of odorant receptors is associated with elaborations of social organization in ants
Abstract. Cooperation in social insect colonies depends on complex chemical communication, requiring a large array of chemosensory receptors. Ant odorant r
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Reposted by Lukas Schrader
Alex Wild @alexwild.bsky.social · 13/05/2026
Found these yellow sneaking ants, Cardiocondyla wroughtonii, in one of UT Austin's greenhouses. A worldwide tramp ant, but not one we normally see in central Texas.
Macro photograph of a small yellow ant with black eyes standing on a white backdropMacro photograph of a small yellow ant in side view walking on a green leaf.
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Reposted by Lukas Schrader
Daniel Kronauer @danielkronauer.bsky.social · 05/03/2026
Thanks to micro-CT and www.antscan.info, you can now explore high resolution, 3D ant images from anywhere in the world. Fantastic work from Julian Katzke, Francisco Hita Garcia, @economo.bsky.social, Thomas van de Kamp and colleagues just dropped: www.nature.com/articles/s41...
antscan.info
Antscan
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Lukas Schrader @shaggyschrader.bsky.social · 30/01/2026
It's been a while. Here's a worker of another species: This is Cardiocondyla mauritanica from a colony collected in Spain last year. These ants are superb for taking pictures because the get startled and freeze for a few seconds upon any disturbance.
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Reposted by Lukas Schrader
Sebastian Höhna @hoehna.bsky.social · 11/11/2025
PhD position available in evolutionary genomics/bioinformatics (hoehnalab.github.io/job_adverts/...). Topic: analyzing gene expression evolution across several firefly species and linking expression changes to genomic architecture. The position is jointly supervised with @anaevolcatalan.bsky.social
hoehnalab.github.io
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Reposted by Lukas Schrader
Mark A. Hanson @hansonmark.bsky.social · 11/11/2025
We wrote the Strain on scientific publishing to highlight the problems of time & trust. With a fantastic group of co-authors, we present The Drain of Scientific Publishing: a 🧵 1/n Drain: arxiv.org/abs/2511.04820 Strain: direct.mit.edu/qss/article/... Oligopoly: direct.mit.edu/qss/article/...
A table showing profit margins of major publishers. A snippet of text related to this table is below.

1. The four-fold drain
1.1 Money
Currently, academic publishing is dominated by profit-oriented, multinational companies for
whom scientific knowledge is a commodity to be sold back to the academic community who
created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis,
which collectively generated over US$7.1 billion in revenue from journal publishing in 2024
alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit
margins have always been over 30% in the last five years, and for the largest publisher
(Elsevier) always over 37%.
Against many comparators, across many sectors, scientific publishing is one of the most
consistently profitable industries (Table S1). These financial arrangements make a substantial
difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor &
Francis revenues were generated in North America, meaning that North American
researchers were charged over US$2.27 billion by just two for-profit publishers. The
Canadian research councils and the US National Science Foundation were allocated US$9.3
billion in that year.A figure detailing the drain on researcher time.

1. The four-fold drain

1.2 Time
The number of papers published each year is growing faster than the scientific workforce,
with the number of papers per researcher almost doubling between 1996 and 2022 (Figure
1A). This reflects the fact that publishers’ commercial desire to publish (sell) more material
has aligned well with the competitive prestige culture in which publications help secure jobs,
grants, promotions, and awards. To the extent that this growth is driven by a pressure for
profit, rather than scholarly imperatives, it distorts the way researchers spend their time.
The publishing system depends on unpaid reviewer labour, estimated to be over 130 million
unpaid hours annually in 2020 alone (9). Researchers have complained about the demands of
peer-review for decades, but the scale of the problem is now worse, with editors reporting
widespread difficulties recruiting reviewers. The growth in publications involves not only the
authors’ time, but that of academic editors and reviewers who are dealing with so many
review demands.
Even more seriously, the imperative to produce ever more articles reshapes the nature of
scientific inquiry. Evidence across multiple fields shows that more papers result in
‘ossification’, not new ideas (10). It may seem paradoxical that more papers can slow
progress until one considers how it affects researchers’ time. While rewards remain tied to
volume, prestige, and impact of publications, researchers will be nudged away from riskier,
local, interdisciplinary, and long-term work. The result is a treadmill of constant activity with
limited progress whereas core scholarly practices – such as reading, reflecting and engaging
with others’ contributions – is de-prioritized. What looks like productivity often masks
intellectual exhaustion built on a demoralizing, narrowing scientific vision.A table of profit margins across industries. The section of text related to this table is below:

1. The four-fold drain
1.1 Money
Currently, academic publishing is dominated by profit-oriented, multinational companies for
whom scientific knowledge is a commodity to be sold back to the academic community who
created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis,
which collectively generated over US$7.1 billion in revenue from journal publishing in 2024
alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit
margins have always been over 30% in the last five years, and for the largest publisher
(Elsevier) always over 37%.
Against many comparators, across many sectors, scientific publishing is one of the most
consistently profitable industries (Table S1). These financial arrangements make a substantial
difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor &
Francis revenues were generated in North America, meaning that North American
researchers were charged over US$2.27 billion by just two for-profit publishers. The
Canadian research councils and the US National Science Foundation were allocated US$9.3
billion in that year.The costs of inaction are plain: wasted public funds, lost researcher time, compromised
scientific integrity and eroded public trust. Today, the system rewards commercial publishers
first, and science second. Without bold action from the funders we risk continuing to pour
resources into a system that prioritizes profit over the advancement of scientific knowledge.
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Reposted by Lukas Schrader
bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 03/11/2025
Germline-limited transposon remnants foster somatic genome diversification www.biorxiv.org/content/10.1101/202…
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Reposted by Lukas Schrader
Genome Biology and Evolution @genomebiolevol.bsky.social · 12/09/2025
Zhao, Quinteros & Machado describe unusually large and continuous pericentromeric transposable element-rich regions in all chromosomes of the genome of a Neotropical fig wasp, 🔗 doi.org/10.1093/gbe/evaf158 #genome #evolution #TEsky
doi.org
Evolutionary Consequences of Unusually Large Pericentric TE-rich Regions in the Genome of a Neotropical Fig Wasp
Abstract. Transposable elements (TEs), despite generally being considered deleterious, represent a substantial portion of most eukaryotic genomes. Specific
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Reposted by Lukas Schrader
Jonathan Romiguier @selfishmeme.bsky.social · 04/09/2025
You may have missed this #ant poster at #ESEB2025, but be sure not to miss the article just published in #openacess in @nature.com: www.nature.com/articles/s41...
nature.com
One mother for two species via obligate cross-species cloning in ants - Nature
In a case of obligate cross-species cloning, female ants of Messor ibericus need to clone males of Messor structor to obtain sperm for producing the worker caste, resulting in males from the same moth...
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Lukas Schrader @shaggyschrader.bsky.social · 22/08/2025
And while I am at it, here's a queen of Nesomyrmex wilda.
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Lukas Schrader @shaggyschrader.bsky.social · 22/08/2025
This is a worker of Cardiocondyla thoracica, next to a Drosophila.
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Esther van den Bos @esthervandenbos.bsky.social · 22/07/2025
Come find me at #SMBE2025 to chat about transposable elements in ants 🧬🐜 S15 - P8
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Cell - a Cell Press journal @cp-cell.bsky.social · 16/06/2025
Now online! Adaptive radiation and social evolution of the ants
dlvr.it
Adaptive radiation and social evolution of the ants
Comparative analyses of 163 ant genomes reveal extensive genome rearrangements, context-specific gene family expansion patterns, and selection on conserved pathways that together underpin the evolution and diversification of social traits and caste differentiation in ants.
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Universität Münster @uni-muenster.de · 24/06/2025
Worker ants increase their reproductive success by caring for their siblings instead of producing their own offspring. An international research team has now uncovered the genetic basis of ant evolution. (Orig. publ. doi.org/10.1016/j.ce...) #ants #phylogenomics #evolution
uni-muenster.de
New study provides deep insights into the genomes of superorganisms
Worker ants increase their reproductive success by caring for their siblings instead of producing their own offspring. An international research team, including Dr. Lukas Schrader from the University ...
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Geoffroy Mallaret @gmallaret.bsky.social · 17/06/2025
Adaptive radiation and social evolution of the ants 🐜🐜🐜 www.cell.com/cell/fulltex...
cell.com
Adaptive radiation and social evolution of the ants
Comparative analyses of 163 ant genomes reveal extensive genome rearrangements, context-specific gene family expansion patterns, and selection on conserved pathways that together underpin the evolutio...
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