Open access in Heredity 👇
doi.org/10.1038/s41437-026-00827-8

Phoxinus phoxinus uses an XX/XY system (males are XY). Phoxinus csikii uses a ZZ/ZW system (females are ZW). Same river, opposite strategies. The mismatch may actually help keep the two species separate: hybrid offspring could suffer from mito-nuclear incompatibilities, reducing their fitness.

Different sex determination systems in two closely related Eurasian minnow (Phoxinus) species - Heredity Heredity - Different sex determination systems in two closely related Eurasian minnow (Phoxinus) species

#paperalert #fishes Two closely related minnow ( #Phoxinus ) species share the same rivers — and sometimes even hybridise. But new research shows they've evolved completely different ways of determining sex. 🐟🧬 Lead author PhD student @thetemi.bsky.social @leibnizlib.bsky.social

SMBE2026 Symposium 5 | Molecular evolution in the era of genetic diversity decline smbe2026.org/programme Organisers - Madlen Stange — Leibniz Institute for the Analysis of Biodiversity Change, Germany - Deborah M Leigh — Senckenberg Nature Research and Goethe University Frankfurt, Germany Loss of genetic diversity is now recognised as a critical component of the global biodiversity crisis, with direct implications for species’ adaptive potential, population persistence, and long-term evolutionary trajectories. For molecular evolutionists, this represents both an urgent challenge and a unique opportunity: unprecedented genomic resources and analytical methods allow us to quantify genetic erosion, reconstruct historical baselines, and model future outcomes at scales unimaginable a decade ago. We are now able to directly study evolutionary processes in declining, newly formed, or eroded populations, which offer unique insights into the evolutionary past and future. This symposium aims to highlight research at the interface of molecular evolution, population genomics, and biodiversity monitoring. We will showcase cutting-edge genomic methods—ranging from ancient and historical genomics, whole genome-based analyses, and multispecies genomic syntheses, to entirely novel AI and synthetic biology frameworks—that track population-level molecular change over time and space. How these methods have been used to identify evolutionary patterns or changes in the face of loss or restorative action. As well as, how these methods can be used to support transformative change. By bringing together researchers working on evolutionary theory, genomic inference of diversity loss, temporal monitoring of populations, and large-scale data integration, this symposium will provide a forum to identify common conceptual ground, share methodological innovations, and explore the methods needed for future advances.

Are you working on biodiversity monitoring using genomics? Are you developing (AI)tools to track molecular change in declining populations? Are you employing novel methods to track molecular change during or after genetic decline? We would be happy to receive your submissions for #SMBE2026!

#Seminar
Join our #MEEGene seminar at @leibnizlib.bsky.social on Zoom next Tuesday, Jan 27, 3PM CET. Listen to
Susanne Reier from @nhmwien.bsky.social, talking about
#Museomics of Alpine #Whitefish
Email meegene@leibniz-lib.de for login details.

“Stellenangebot. Student*in für den Multimedia-Wettbewerb Fast Forward Science. Bis zum 20. Januar 2026 bewerben.” Foto Person mit Smartphone in der Hand

Zum nächstmöglichen Zeitpunkt suchen wir eine*n Student*in zur Unterstützung der Kommunikation des Multimedia-Wettbewerbs Fast Forward Science. Die Bewerbungsfrist ist der 20. Januar. Alle Infos in der Stellenausschreibung: wissenschaft-im-dialog.de/documents/51...

#Seminar
Join our #MEEGene seminar at @leibnizlib.bsky.social on Zoom next Tuesday, Jan 13, 3PM CET and listen to: Sarah Schmid from @usyseth.bsky.social @ele-ethwsl.bsky.social talk about #museomics to improve #eDNA #monitoring of marine fishes!
Email meegene@leibniz-lib.de for login details.

@debbiemleigh.bsky.social and I are inviting abstracts for our symposium S05 showcasing research at the interface of molecular evolution, population genomics, and biodiversity monitoring.

#Seminar
Join our #MEEGene seminar at @leibnizlib.bsky.social on Zoom next Tuesday, Dec 9, 3PM CET and listen to:
Mandë Holford from Harvard OEB @harvardoeb.bsky.social talk about connecting nature and humanity through venom!
Email meegene@leibniz-lib.de for login details.
@leibnizlib.bsky.social

Looking for an internship in spring?

Do you like fish, lakes, cycling & cheese?

Our lab in Kastanienbaum might be the place for you!

Apply, it’s great!

apply.refline.ch/673277/1301/...

Postdoctoral position in Palaeo-population genomics at the Center for the Human Past - Uppsala University Postdoctoral position in Palaeo-population genomics at the Center for the Human Past, Department of Organismal Biology, Uppsala University

Become our colleague! - 2yr Postdoctoral position in Palaeo-population genomics at the Center for the Human Past (UU) @humanpastcenter.bsky.social 🧪

Great place to work at (ok, I am biased), integration with archaeologists and linguists + pretty flexible research topic

www.uu.se/en/about-uu/...

It's not to late to request the link for @kmkocot.bsky.social talk today, on #marine #invertebrate #biodiversity. 8AM CST, 9AM EST, 3PM CET.

Email meegene@leibniz-lib.de for login details.

#Seminar
Join our #MEEGene seminar at @leibnizlib.bsky.social on Zoom next Tuesday, Nov 11, 3PM CET. Listen to
Kevin Kocot @kmkocot.bsky.social from Alabama Museum of Natural History, talking about #Biodiversity & Systematics of Marine Invertebrates
Email meegene@leibniz-lib.de for login details.

For anyone interested, Dirk Ahrens will talk about the insights gained in this paper tomorrow, Oct 28, 3pm CET on zoom in the @leibnizlib.bsky.social MEEGene seminar.
Email meegene@leibniz-lib.de for login details.

#Seminar
Join our #MEEGene seminar at @leibnizlib.bsky.social
on zoom tomorrow, Oct 28, 3pm CET and listen to
Dirk Ahrens from @leibnizlib.bsky.social talking about chafer #beetles with extreme #philopatry and DNA-based #taxonomy.
Email meegene@leibniz-lib.de for login details.

🚨🚨Job! 🚨🚨Permanent (75% time) job! We are a pretty awesome research group & seek a manager who deals with everything: personnel tasks, organizing retreats, preparing code for teaching / data structures for research... Fluency in German & English essential. stellenboerse.uni-mainz.de#/jgu/job/51527

Lead by Lars Dietz and Dirk Ahrens @leibnizlib.bsky.social , contributed by @rachelwarnock.bsky.social @lpodsiadlowski.bsky.social Jonas Eberle, Sandra Kukowka, Erika Bazzato Oliver Niehuis Christoph Mayer and me

Cryptic species can be phylogenetically old despite strong sex-biased dispersal Abstract. The impact of strongly differentiated populations on species delimitation due to limited or sex-biased dispersal remains challenging and under-ex

Extreme female philopatry in Pachypus beetles reveals 14 cryptic species!
🧬 Our study shows ancient speciation (5.3mya) despite limited dispersal, linked to the Messinian salinity crisis. Integrative taxonomy uncovers hidden diversity. #Taxonomy #Genetics url: academic.oup.com/sysbio/artic...

Endspurt zum ersten Crowdfunding-Ziel von @riffreporter: 16.125€ von 25.000€, um die Plattform für unabhängigen und sachkundigen #Journalismus zu #Klima, #Natur,
#Wissenschaft, #Weltgeschehen und weiteren wichtigen Themenfeldern sicher ins nächste Jahr zu bringen, sind geschafft. Macht gerne mit […]

In our October issue: Perspective led by Laetitia Navarro (@laenavarro.bsky.social) on historical ecology, which uses various sources of information to study past biodiversity change and human-nature interactions. 🧪🌎
bit.ly/46Qp6Kp
Readcube: rdcu.be/eKYfH

Join @lauratensen.bsky.social's talk on the role of colour #polymorphisms in #evolution and in red leopards, today at 3 PM CEST. To receive login details, please contact meegene@leibniz-lib.de.

Attempted eradication of smallmouth bass promotes rapid evolution. Here's the study that is the focus of the Scientific American article: www.pnas.org/doi/10.1073/...

#Seminar
Join our #MEEGene seminar at
@leibnizlib.bsky.social
on zoom next Tuesday, Oct 14, 3pm CEST and listen to
Laura Tensen @lauratensen.bsky.social from @unigreifswald.bsky.social talking about comparative #genomics in red #leopards.
Email meegene@leibniz-lib.de for login details.

African lion conservation requires adaption to regional anthropogenic threats and mitigation capacity
www.sciencedirect.com/science/arti...

🗓️ Today @sofiavanmoorsel.bsky.social (University of Zurich) will present her work on drought sensitivity in European beech at our Seminar Series. Join us to hear more about intraspecific traits, VOCs, and imaging spectroscopy.
Everyone is welcome, in-person or online.

What are the interconnections between livelihoods, biodiversity, and the services that connect the two?
Maria J. Santos (University of Zurich) will address this question at our Biodiversity Seminar today.
Join us in-person or online!
10 Sep at 11 am CEST
biodiversitycenter.wsl.ch/en/events/de...

🤩New paper from our team member @cchartierrescan.bsky.social entitled 'Snow drought propagation and its impacts on streamflow drought in the Alps' published on Environmental Research Letters! Big congrats! Check out more details here: iopscience.iop.org/article/10.1...

#ClimateChange #Hydrology

Yup.

Dass man hier handeln könnte, wenn man wollte, zeigt der LK #Potsdam -Mittelmark und der dortige Wasser-& Bodenverband Nuthe-Nieplitz.
Dort werden auf Kreistagsinitiative von #CDU & @die-linke.de (!) alte Stauanlagen systematisch saniert, um dem fallenden Grundwasserspiegel entgegenzuwirken.
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Beach picture from the Canary Islands. Copyright: Yves Bernardi auf Pixabay

#LIBresearch finds high mercury & arsenic in the critically endangered sawback angel shark (*Squatina aculeata*) near the Canary Islands. Contamination in liver & muscle exceeds safety limits, stressing urgent need for conservation monitoring.

👉 doi.org/10.1016/j.ma...

#MarineScience