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Reposted by Marianna Karageorgi

Jeremy BOO! Yoder 🎃💀🕷️ @jbyoder.org · 8d

So this came online over the weekend: My dive into the "definition" of coevolution is online ahead of publication in @journal-evo.bsky.social!

Don’t ask "when is it coevolution?" — ask "how?"

doi.org/10.1093/evol...

Don’t ask “when is it coevolution?” — ask “how?”

Abstract. Coevolution has come to be widely understood as specific, simultaneous, reciprocal adaptation by pairs of interacting species. This strict-sense

doi.org

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Marianna Karageorgi @mkarag.bsky.social · 14d

Preschool teachers provide fewer participation opportunities to working-class students than those from more privileged backgrounds | PNAS www.pnas.org/doi/10.1073/...

PNAS

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

www.pnas.org

Reposted by Marianna Karageorgi

Jeffrey Ross-Ibarra @jrossibarra.bsky.social · Sep 3

Save the date! #PEQG26 June 9-12 2026 in Asilomar, CA. Happens only every 2yrs, but is my favorite conference. Full website coming soon, and registration and abstract submission opens November 14, but I'm allowed to tease that keynotes will be @jnovembre.bsky.social @jennytung.bsky.social and me!

Homepage - Population, Evolutionary, and Quantitative Genetics Conference

Visit our website to learn more.

genetics-gsa.org

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Marianna Karageorgi @mkarag.bsky.social · 23d

Thank you, Niels! 🦋

Marianna Karageorgi @mkarag.bsky.social · 23d

Thank you, Marcus!

Marianna Karageorgi @mkarag.bsky.social · 23d

Ευχαριστούμε! 💛

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Reposted by Marianna Karageorgi

Dmitri Petrov @petrovadmitri.bsky.social · 23d

Very excited to see this work in press! I think there is a reason to believe that this is a common means of stabilizing large-effect polymorphisms in general and might be an important reason for why diploidy is so common. news.stanford.edu/stories/2025...

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Marianna Karageorgi @mkarag.bsky.social · 23d

How do populations maintain an evolutionary memory? I am happy to share that our work with Dmitri Petrov @petrovadmitri.bsky.social, Paul Schmidt, and colleagues on dominance reversal and stabilization of insecticide resistance in changing environments over time is now published at Nature EE.

Beneficial reversal of dominance maintains a large-effect resistance polymorphism under fluctuating insecticide selection - Nature Ecology & Evolution

Measuring selection and dominance in fitness of the insecticide-resistant Ace alleles in Drosophila melanogaster, the authors show evidence for beneficial reversal of dominance, a mechanism that can s...

www.nature.com

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Reposted by Marianna Karageorgi

sharon greenblum @greensi.bsky.social · Aug 19

August’s Nature Plants cover story shows how we integrated large-scale multiDAP and snRNA data to reveal drivers of cell type identity and evolution in flowering plants. www.nature.com/nplants/volu... We packed a lot into this paper! Here’s a single-cell spin on what we found:

Nature Plants - Cistromes uncovered

Transcription factors (TFs) have specific patterns of binding to gene promoter regions, which have similarities and differences within TF families and...

www.nature.com

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Marianna Karageorgi @mkarag.bsky.social · Aug 20

Congratulations! Beautiful cover 🌄!

Marianna Karageorgi @mkarag.bsky.social · Aug 10

Earlier in summer, there was a gigantic 4-year longitudinal study in France showing that the school environment triggers a gender gap in mathematics. www.nature.com/articles/s41...

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Marianna Karageorgi @mkarag.bsky.social · Aug 1

I was down at Pacific Grove last weekend and a volunteer shared the monarch population is declining.. #pesticides #land_use_change

Monarch butterflies’ mass die-off in 2024 caused by pesticide exposure – study

New peer-reviewed research found an average of seven pesticides in each of 10 butterflies tested

www.theguardian.com

Marianna Karageorgi @mkarag.bsky.social · Jul 27

Toxin resistance (natural or synthetic toxins) Vs traits dependent on normal enzyme activity. See also our recent manuscript on maintenance of genetic variation due to tradeoffs www.biorxiv.org/content/10.1...

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Reposted by Marianna Karageorgi

Zach B. Hancock @hancockzb.bsky.social · Jun 12

check out my new article published in @nautil.us on Sewall Wright's famous shifting-balance theory of evolution, told through the lens of his work with guinea pigs!

nautil.us/evolution-an...

Evolution and Guinea Pig Toes

How one animal's oddity inspired Sewall Wright to take on one of Darwin's big ideas

nautil.us

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Reposted by Marianna Karageorgi

AmandaJealous @amandajealous.bsky.social · Apr 24

#Invertefest?! Okay!
This one is a personal favorite out of all my bug art.

Milkweed Munchers. A comic strip that uses 5 tall panels. Each panel depicts a different invertebrate that relies on milkweed as a host plant. First Monarch caterpillars, one of them exclaims “Delicious!” Next, Swamp Milkweed Leaf Beetles, one beetle shouts “Exquisite!” The third panel shows a cluster of Oleander Aphids on the stem of the milkweed, several small speech bubbles that say “Yum.” are coming from the group of aphids. Then we have Large Milkweed Bugs. The adult bug says “Delectable!”. There’s a group of nymph bugs in the background. Lastly, the final featured invertebrate is the Small Milkweed Bug. The cute orange and black bug has words of praise “Tremendous Chef.” It says. Below the panels are the name of each invertebrate. Above is the title that is adorned with milkweed to the left and right. On the left the milkweeds is young and blooming and on the right the plant is older, has grown seed pods and the leaves have been consumed.

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Reposted by Marianna Karageorgi

martinswarren.bsky.social @martinswarren.bsky.social · May 3

Just noticed this in last Sunday’s Observer, a week in the life of an Orange-tip as told to Simon Barnes. Brilliant.

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Marianna Karageorgi @mkarag.bsky.social · Apr 26

Answers to a 160-year-old riddle about the genetics of Mendel’s pea traits

The genetic architecture underlying differences in pod colour, pod shape and flower position in peas has finally been resolved.

www.nature.com

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Reposted by Marianna Karageorgi

NPR @npr.org · Apr 17

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom, photographer Lucas Foglia documents the journey.

Photos: Scientists trace a butterfly migration route that is millions of years old

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom, photographer ...

www.npr.org

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Marianna Karageorgi @mkarag.bsky.social · Apr 18

Inferring Balancing Selection From Genome-Scale Data

Abstract. The identification of genomic regions and genes that have evolved under natural selection is a fundamental objective in the field of evolutionary

academic.oup.com

Marianna Karageorgi @mkarag.bsky.social · Mar 24

Long-term studies provide unique insights into evolution - Nature

Long-term studies provide insights into the complex interplay between evolutionary process and pattern across multiple systems and timescales.

www.nature.com

Reposted by Marianna Karageorgi

DrDinD.bsky.social @drdind.bsky.social · Mar 10

For Women's History Month, may we all remember and summon the courage of Rachel Carson, who wrote Silent Spring to inform the world what DDT was doing to the songbirds, raptors,and by extension, us. While battling cancer, she stood her ground against savage attacks by the chemical industry...

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Reposted by Marianna Karageorgi

PopGen Vienna @popgenviennaphd.bsky.social · Feb 13

The PopGen Vienna Seminar series schedule is ready for the next term (Mar-Jun). It's jam-packed with fantastic speakers in #evolution, #genetics, #genomics, #popgen, and more! Details and streaming link signup can be found on our website www.popgen-vienna.at/news/seminars/

PopGen Seminar Series
Summer Term 2025

04.03.25 – Lutz Becks (Univ. of Konstanz, DE) The evolutionary dynamics of novel endosymbiosis.
11.03.25 – Ilkka Kronholm (Univ. of Jyväskylä, FI) How chromatin structure influences genetic and epigenetic variation.
18.03.25 – Katja Hoedjes (Vrije Univ. Amsterdam, NL) Understanding functional impact of genetic variation on complex traits at a single nucleotide resolution.
25.03.25 – Sophie Armitage (Freie Univ. of Berlin, DE) Evolutionary ecology of host-pathogen interactions.
01.04.25 – Matthew Rockman (New York Univ., US) Developmental evolution is a population-genetics problem.
08.04.25 – Wen-Juan Ma (Vrije Univ. Brussels, BE) The evolution of sex chromosomes and sex determination in frogs.
15.04.25 – Almorò Scarpa (Vetmeduni, AT) Two centuries of transposable element invasions in Drosophila melanogaster
22.04.25 – Julia Kreiner (Univ. of Chicago, US) The mode and tempo of genomic adaptation to contemporary agriculture.
29.04.25 – Martin Kaltenpoth (Max Planck Inst. for Chemical Ecology, DE) Microbial symbionts as sources of evolutionary innovations in beetles.
06.05.25 – Luisa Pallares (Friedrich Miescher Laboratory, DE) Phenotypic robustness across the genotype-phenotype map, from genes to environment and back.
13.05.25 – Diana Rennison (Univ. of Calif., San Diego, US) Understanding the predictability of evolutionary trajectories using threespine stickleback.  20.05.25 – Filipa Sousa (Univ. of Vienna, AT) Bioenergetics Evolution: The link between Earth’s and Life’s history.
27.05.25 – Yun Song (Univ. of California, Berkeley, US) Learning and applying complex probability distributions over biological sequences.
03.06.25 – April Wei (Cornell Univ., US) Enabling efficient analysis of biobank-scale data with genotype representation graphs.

ALT TEXT OUT OF SPACE, GO TO https://www.popgen-vienna.at/news/seminars/

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Marianna Karageorgi @mkarag.bsky.social · Feb 17

A century of theories of balancing selection www.biorxiv.org/content/10.1...

A century of theories of balancing selection

Traits that affect organismal fitness are often very genetically variable. This genetic variation is vital for populations to adapt to their environments, but it is also surprising given that nature (...

www.biorxiv.org

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Marianna Karageorgi @mkarag.bsky.social · Feb 4

Congratulations, Mario!

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Marianna Karageorgi @mkarag.bsky.social · Jan 22

Another study on the interaction between adaptation to seasonal and pesticide selection co-led with @egorlappo.me and team is in prep. Stay tuned! 19/n

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