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Ariel Chipman

@chipman-lab.bsky.social
755 followers 353 following 186 posts

Arthropod Evo-Devo biologists based at the Hebrew University. Interested in body-plan evolution (especially segments and tagmata), the evolution of complexity and the evolution of diversity. Author of text-book: Organismic Animal Biology

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Reposted by Ariel Chipman
Ariel Chipman @chipman-lab.bsky.social · 22/09/2026
New addition to the entrance to my home. Courtesy of my multitalented sister.
Handmade mosaic of a bird (probably an African starling).The entrance to a Jerusalem house with a mosaic of a bird in a niche to the right of the main door.
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Ariel Chipman @chipman-lab.bsky.social · 22/09/2026
New addition to the entrance to my home. Courtesy of my multitalented sister.
Handmade mosaic of a bird (probably an African starling).The entrance to a Jerusalem house with a mosaic of a bird in a niche to the right of the main door.
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Yasin Dagdas @plantophagy.bsky.social · 13/09/2026
AI (The Guardian)
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Genome Biology and Evolution @genomebiolevol.bsky.social · 04/09/2026
Kim et al. investigate the evolutionary conservation of molting gene expression across five representative pancrustaceans, showing that some genes active in molting are shared between these species, while most are different. 🔗 academic.oup.com/gbe/article/... #societyjournal #genome #evolution
GBE | Molting in Pancrustacea Is Characterized by Both Deeply Conserved and Recently Evolved Gene Modules

Photo of a molting Scylla paramamosain taken from Figure 1 of Qiao et al 2022 (https://doi.org/10.3389/fmars.2022.971648) used under the Creative Commons Attribution License (CC BY 4.0).
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Ariel Chipman @chipman-lab.bsky.social · 02/09/2026
Biological collections are timeless. Today I hosted two parasitologists from Warsaw and Kiev who looked at cestode samples, collected by scientists from The Hebrew University from birds in Syria in 1930 (then under French mandate). Still useful for tapeworm taxonomy. (more info in the alt text)
From left to right: Dr. Rusłan Sałamatin (Medical University of Warsaw), Prof. Vadim Kornyushin (University of Kiev emeritus), Prof. Ariel Chipman (The Hebrew University) standing in front of the parasitological wet collections of the Hebrew University.A glass slide preparation with a red stained cestode. The handwritten text on the slide reads: "Paradilepis sp. Kiri Khan. c186 Plegadis falcinellus. Syria 4/1930" 
Kiri Khan is today in Türkiye. Plegadis falcinellus is the glossy ibis (the host species of the worm)
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Ariel Chipman @chipman-lab.bsky.social · 02/09/2026
Biological collections are timeless. Today I hosted two parasitologists from Warsaw and Kiev who looked at cestode samples, collected by scientists from The Hebrew University from birds in Syria in 1930 (then under French mandate). Still useful for tapeworm taxonomy. (more info in the alt text)
From left to right: Dr. Rusłan Sałamatin (Medical University of Warsaw), Prof. Vadim Kornyushin (University of Kiev emeritus), Prof. Ariel Chipman (The Hebrew University) standing in front of the parasitological wet collections of the Hebrew University.A glass slide preparation with a red stained cestode. The handwritten text on the slide reads: "Paradilepis sp. Kiri Khan. c186 Plegadis falcinellus. Syria 4/1930" 
Kiri Khan is today in Türkiye. Plegadis falcinellus is the glossy ibis (the host species of the worm)
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Reposted by Ariel Chipman
Max Farnworth @maxfarnworth.bsky.social · 31/08/2026
I am advertising a 3 year postdoc position. This person is going to focus on cell type development and evolution across key integration centres of the insect brain in four insect species. See details in the ad.
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Ariel Chipman @chipman-lab.bsky.social · 09/08/2026
Two preprints from the lab dropped in the last few days. #1 A detailed review led by Nitzan Alon, where we argue that the apparent similarities in the #segmentation process in different phyla stem from convergent co-option of #neurogenesis pathways. ecoevorxiv.org/repository/v...
ecoevorxiv.org
Nervous system centralization as the evolutionary scaffold for body segmentation: A review of the evidence
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Ariel Chipman @chipman-lab.bsky.social · 09/08/2026
Two preprints from the lab dropped in the last few days. #1 A detailed review led by Nitzan Alon, where we argue that the apparent similarities in the #segmentation process in different phyla stem from convergent co-option of #neurogenesis pathways. ecoevorxiv.org/repository/v...
ecoevorxiv.org
Nervous system centralization as the evolutionary scaffold for body segmentation: A review of the evidence
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RobertoFeuda @robertofeuda.bsky.social · 30/07/2026
We're hiring 4 postdocs at @unibo.it to study nervous system evolution. Seeking expertise in single-cell genomics, molecular or developmental biology in ctenophores, cnidarians, echinoderms, flies or human stem cells. 2+2 yrs contract. Deadline: 26 Aug. Please share! bandi.unibo.it/s/apos7/proc...
bandi.unibo.it
Procedura di valutazione comparativa per titoli e colloquio per il conferimento di n. 4 contratti di ricerca presso il Dipartimento di Scienze Biologiche, Geologiche e Ambientali - SSD BIOS-04/A - GSD...
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Lauren Sumner-Rooney @laurensr.bsky.social · 29/07/2026
📢 JOB ALERT! 📢 I am recruiting a 30-month postdoc to work on modelling the vision of trilobites @hfspo.bsky.social ! If you like 3D data, fossils, and functional morphology, this is the one for you! 📆Deadline 27. Aug Pls contact me with any Qs and share widely! www.bristol.ac.uk/jobs/find/de...
bristol.ac.uk
Details | Working at Bristol | University of Bristol
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Rob Waterhouse @rmwaterhouse.bsky.social · 27/07/2026
Hot off the press @official-smbe.bsky.social MBE - a phylum-wide assessment to systematically evaluate, refine, and revise current understanding of the evolutionary dynamics of the #arthropod moulting genetic toolkit! academic.oup.com/mbe/advance-...
academic.oup.com
Evolutionary dynamics of the arthropod moulting machinery
Abstract. Exoskeletons define arthropods, providing support for segmented bodies and appendages while protecting against environmental stress and predation
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Rob Waterhouse @rmwaterhouse.bsky.social · 27/07/2026
📢 preprint update: www.biorxiv.org/content/10.6... 🦀🧬🦐🧬🐝🧬🦋🧬 𝐈𝐧𝐯𝐞𝐬𝐭𝐢𝐠𝐚𝐭𝐢𝐧𝐠 𝐢𝐧𝐝𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐭 𝐞𝐯𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐚𝐫𝐲 𝐥𝐢𝐟𝐞 𝐡𝐢𝐬𝐭𝐨𝐫𝐲 𝐭𝐫𝐚𝐧𝐬𝐢𝐭𝐢𝐨𝐧𝐬 𝐭𝐨 𝐦𝐞𝐭𝐚𝐦𝐨𝐫𝐩𝐡𝐢𝐜 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐜𝐫𝐨𝐬𝐬 𝐏𝐚𝐧𝐜𝐫𝐮𝐬𝐭𝐚𝐜𝐞𝐚 #phylogenomics #evolution #biodiversity With Giulia Campli, @marcrr.bsky.social, & @chipman-lab.bsky.social
biorxiv.org
Convergent gene family evolution underpins repeated transitions to metamorphic development across Pancrustacea
Arthropod developmental modes are highly diverse, ranging from direct development with little morphological change between moults to metamorphic life-stage progressions characterised by profound trans...
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Ariel Chipman @chipman-lab.bsky.social · 09/07/2026
A new and exciting crop in my vegetable garden: swallowtail caterpillars growing on a rue plant (Ruta chalepensis) I planted especially for them.
A swallowtail caterpillar (4th or 5th instar) on a rue plant. Mostly greenish-yellow with black and orange bands.A swallowtail caterpillar (3rd or 4th instar) on a rue plant. Mostly greenish-yellow with an orange longitudinal stripe and black bands. Also various spines and hairs.
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Ariel Chipman @chipman-lab.bsky.social · 09/07/2026
A new and exciting crop in my vegetable garden: swallowtail caterpillars growing on a rue plant (Ruta chalepensis) I planted especially for them.
A swallowtail caterpillar (4th or 5th instar) on a rue plant. Mostly greenish-yellow with black and orange bands.A swallowtail caterpillar (3rd or 4th instar) on a rue plant. Mostly greenish-yellow with an orange longitudinal stripe and black bands. Also various spines and hairs.
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Natural History Museum, London @nhm-london.bsky.social · 27/06/2026
The smallest centipedes have 30 legs, while the largest ever discovered had 382 👀 🐛 Despite the name, no centipede with exactly 100 legs has ever been found. Surprising science explains why!
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Ariel Chipman @chipman-lab.bsky.social · 17/06/2026
Take 30 scientists at all career stages, interested in the evolution of gene regulatory networks, lock them in an English country house for 4 days, feed them and give them unlimited amounts of alcohol. What do you get? Probably the most exciting conference I have ever attended. #BiologistsWorkshops
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Ariel Chipman @chipman-lab.bsky.social · 17/06/2026
Take 30 scientists at all career stages, interested in the evolution of gene regulatory networks, lock them in an English country house for 4 days, feed them and give them unlimited amounts of alcohol. What do you get? Probably the most exciting conference I have ever attended. #BiologistsWorkshops
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Max Telford @maxjtelford.bsky.social · 16/06/2026
It's very difficult to work out the relationships between spiral cleaving phyla. With interesting implications for their origins and the interpretation of Cambrian fossils. Work by @anaserrasilva.bsky.social. Supported by @leverhulme.ac.uk.
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Ariel Chipman @chipman-lab.bsky.social · 14/06/2026
At last week’s European conference, a group of “left wing” students ignored or actively boycotted my students and me. Meanwhile, I was hanging out with Egyptian, Iranian, Moroccan and Turkish colleagues. Many European leftist activists don’t really understand the Middle East.
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Ariel Chipman @chipman-lab.bsky.social · 14/06/2026
At last week’s European conference, a group of “left wing” students ignored or actively boycotted my students and me. Meanwhile, I was hanging out with Egyptian, Iranian, Moroccan and Turkish colleagues. Many European leftist activists don’t really understand the Middle East.
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Ariel Chipman @chipman-lab.bsky.social · 12/06/2026
#EED2026 @marcrr.bsky.social talking about the Bgee database for curated animal gene expression patterns. The database is manually curated, freely available. Collects data from published papers.
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Marc Robinson-Rechavi @marcrr.ecoevo.social.ap.brid.gy · 10/06/2026
Ariel Chipman #EED2026: what is organ identity? (He warned us that this talk "might be a bit rambing" 😅 )
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Ariel Chipman @chipman-lab.bsky.social · 04/06/2026
Jerusalem #Pride setting off
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Idan Sheizaf @sheizaf.bsky.social · 23/05/2026
A huge thanks to @chipman-lab.bsky.social , my co-author Eviatar, @snsf.ch for funding my PhD, and everyone at Hebrew U who supported this work. Science is a team effort! 🌌✨ #Ecology #LightPollution #Isopods (3/3)
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Idan Sheizaf @sheizaf.bsky.social · 23/05/2026
I am absolutely thrilled—my first PhD article is published and making headlines internationally! 🥳🔬 We found that everyday streetlights trigger Armadillo isopods into bizarre, continuous "death spirals." Read the paper in @ecol-evol.bsky.social here: onlinelibrary.wiley.com/doi/10.1002/... 🧵👇 (1/3)
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bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 08/05/2026
Gene family evolutionary dynamics reveal convergent genomic signatures in pancrustacean metamorphosis www.biorxiv.org/content/10.64898/20…
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Rob Waterhouse @rmwaterhouse.bsky.social · 08/05/2026
Understanding how #gene family dynamics contribute to the evolutionary transitions in life histories among #arthropods www.biorxiv.org/content/10.6...
biorxiv.org
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Sergio González Mora @phylumbryozoa.bsky.social · 06/05/2026
An Increase in Animal Diversity was Facilitated by Ecologically-Driven Brain Complexity Throughout the Cambrian | BioEssays doi.org/10.1002/bies...
doi.org
An Increase in Animal Diversity was Facilitated by Ecologically‐Driven Brain Complexity Throughout the Cambrian
The Brain-First Hypothesis suggests that the Cambrian transition from animals with simple body plans and simple brains to more complex animals was driven by a selection for brains with increased neur...
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MU-Peter Shimon 🀄 @mu-peter.bsky.social · 06/05/2026
~ 550–520 mya was a dramatic period in evolution... This asks, what if the brain came first? And gives a different of view the Cambrian Explosion An Increase in Animal Diversity was Facilitated by Ecologically-Driven Brain Complexity Throughout the Cambrian🧪 onlinelibrary.wiley.com/doi/10.1002/...
Schematic representation of the main points of the Brain First Hypothesis.
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Science X / Phys.org @sciencex.bsky.social · 05/05/2026
A new theoretical model proposes that the evolution of complex brains played a central role in driving the gradual increase in animal diversity during the Cambrian period. doi.org/hb2j8b
phys.org
What if the brain came first? Scientist rethinks the Cambrian Explosion
For decades, scientists have sought to explain the so-called "Cambrian Explosion," a pivotal period over 500 million years ago when a remarkable diversity of animal life appeared in the fossil record.
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Ariel Chipman @chipman-lab.bsky.social · 03/05/2026
It is just over two years since publication of "Organismic Animal Biology". I have gotten very positive feedback in person, but there have been almost no reviews of the book. If you are one of the ~100 people who purchased a copy and liked it, please post a review on your favorite online bookshop.
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Ariel Chipman @chipman-lab.bsky.social · 03/05/2026
It is just over two years since publication of "Organismic Animal Biology". I have gotten very positive feedback in person, but there have been almost no reviews of the book. If you are one of the ~100 people who purchased a copy and liked it, please post a review on your favorite online bookshop.
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Ariel Chipman @chipman-lab.bsky.social · 20/04/2026
New paper published! Another of my "sabbatical papers" - a series of papers that evolved and matured through discussions with colleagues while I was on a six month roaming sabbatical a couple of years ago. This one discusses the #Cambrian #explosion. 1/6 onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
An Increase in Animal Diversity was Facilitated by Ecologically‐Driven Brain Complexity Throughout the Cambrian
The Brain-First Hypothesis suggests that the Cambrian transition from animals with simple body plans and simple brains to more complex animals was driven by a selection for brains with increased neur...
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Arthropod Abbey (Abigail Hayes) @arthropodabbey.bsky.social · 20/04/2026
Hey you! I am still on the market for jobs this fall! I am an entomologist who specializes in inclusive biology teaching (15+ semesters of collegiate instruction) and a broad array of research skills spanning collection & ID, molecular work (RNAi, Genomics), and phenotyping (behavior, physiology)🧪
media.tenor.com
a person is holding a green grasshopper in their hand with the word cube visible in the background
Alt: a person is holding a green katydid in their hand, the katydid is waving its front legs around
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Ariel Chipman @chipman-lab.bsky.social · 20/04/2026
New paper published! Another of my "sabbatical papers" - a series of papers that evolved and matured through discussions with colleagues while I was on a six month roaming sabbatical a couple of years ago. This one discusses the #Cambrian #explosion. 1/6 onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
An Increase in Animal Diversity was Facilitated by Ecologically‐Driven Brain Complexity Throughout the Cambrian
The Brain-First Hypothesis suggests that the Cambrian transition from animals with simple body plans and simple brains to more complex animals was driven by a selection for brains with increased neur...
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Ariel Chipman @chipman-lab.bsky.social · 16/04/2026
Remember the rock pool from yesterday? Here is what we found under the microscope: Ostracods and ostracod eggs! They seem to be doing some sort of parental care and waving their antennae over the eggs. @jopabinia.bsky.social
Large (female?) ostracod and smaller individual on some pond0scum. A few eggs can be seen to the left.About 20 ostracod eggs on a small stem.Two ostracods seem to be actively aerating their eggs using their antennae.
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Ariel Chipman @chipman-lab.bsky.social · 15/04/2026
Yesterday we had a lab outing to say goodbye to Asya Novikova. Asya has been in the lab (on and off) for over 15 years: as an intern, as a student and as an animal technician. We are sad to see her go, but it is time for her to move on.
Asya and Ariel BLV trying to identify micro-invertebrates in a small rock pool.A footpath in the Jerusalem mountains at the tail end of spring flower season. On both sides of the path are tall purple inflorescences of Scilla Hyacinthoides. In the foreground are some pink Linum pubescens. Aside from these there are numerous yellow and white flowers: garlic, mustard and more.Asya standing on a slope with the lab mascot - Plushy Onopeltus - strapped to her backpack.Asya sitting on a stone wall under a large oak tree and playing the recorder.
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Ariel Chipman @chipman-lab.bsky.social · 14/04/2026
New paper led by Ph.D. student Idan @sheizaf.bsky.social Combining citizen science, behavioral ecology, taxonomy of rare species and anthropogenic disturbance. Something for everyone. onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com
A Novel Light‐Induced Collective Circular Movement in Armadillo sordidus Isopods
Reader environment loaded
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Idan Sheizaf @sheizaf.bsky.social · 14/04/2026
Disturbance isn't just habitat loss. It triggers unexpected behavioral shifts in species we barely understand. 🕵️‍♂️ In this study, we show how rare crustaceans respond to human-altered environments in non-obvious ways. We impact the world even when we aren't looking! 🌿
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Ariel Chipman @chipman-lab.bsky.social · 14/04/2026
New paper led by Ph.D. student Idan @sheizaf.bsky.social Combining citizen science, behavioral ecology, taxonomy of rare species and anthropogenic disturbance. Something for everyone. onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com
A Novel Light‐Induced Collective Circular Movement in Armadillo sordidus Isopods
Reader environment loaded
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Ariel Chipman @chipman-lab.bsky.social · 31/03/2026
Two papers accepted in 24 hours! One is a cool “small” story and one is a major synthesis, several years in the making. Stay tuned for more details as they move into production.
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Ariel Chipman @chipman-lab.bsky.social · 28/03/2026
Most of the Burgess Shale weird wonders are not “extinct phyla” but stem-group arthropods.
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Yehu Moran @yehumoran.bsky.social · 16/03/2026
Today the EMBO Journal special issue on molecular ecology and evolution is finally published. It was a pleasure coordinating this collection together with @berndpulverer.bsky.social and many outstanding authors. Editorial: link.springer.com/article/10.1... Cover art by @munafomarzia.bsky.social
link.springer.com
EMBO Press co-evolves with molecular ecology and evolutionary biology - The EMBO Journal
The EMBO Journal - Molecular ecology and evolution are central to understanding how biological systems function, interact, and diversify. A special issue of this journal reflects the growing...
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Kenny Kim @nextstrain.bsky.social · 28/02/2026
New preprint!! 🌟📝 Can we tell if a horseshoe crab will moult ? Will it moult tomorrow or maybe in a week? 🤔👀 In this study, we developed a simple and non-invasive approach in determining the moult stage of the Atlantic #horseshoe crab by looking at key structures. #inverts #science
Moulting horseshoe crab
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Marc Robinson-Rechavi @marcrr.bsky.social · 02/03/2026
Another exciting preprint by @nextstrain.bsky.social, with one of the coolest animals out there, the horseshoe crab!
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bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 27/02/2026
Morphological characterization of moulting in the Atlantic horseshoecrab Limulus polyphemus: phylogenetic conservation amongchelicerates and evolutionary convergence of ecdysis linked to headshield patterns www.biorxiv.org/content/10.64898/20…
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Fly Journal @fly-journal.bsky.social · 26/02/2026
Insect research has used Drosophila as a model organism for over a century. But today’s tools now open up a much wider spectrum of insects which deserve to be studied. See the recent commentary in @fly-journal.bsky.social by @peterkdearden.bsky.social, ‘Why just fly?’ doi.org/10.1080/1933...
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Max Telford @maxjtelford.bsky.social · 28/01/2026
www.nature.com/articles/s41...
nature.com
A Cambrian soft-bodied biota after the first Phanerozoic mass extinction - Nature
The Huayuan biota exhibits extraordinary biodiversity, illuminating the impact of the Phanerozoic mass extinction around 513 million years ago and offering critical insights into the transformation of...
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Royal Society Publishing @royalsocietypublishing.org · 12/01/2026
We are pleased to welcome Phil Donoghue, FRS as the new Editor-in-Chief at #ProcB! Find out more about @phil-donoghue.bsky.social in our new blog royalsociety.org/blog/2026/01...
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