Aaditya Narasimhan

Postdoctoral position in Forest Genetics at @uni-freiburg.de with a focus on local adaptation and/or stress reaction of trees. The position combines research and teaching (4 SWS), and offers the opportunity to develop an independent research profile (4+ years).

How does the strength of genetic drift evolve over long times?

New preprint out 👇

www.biorxiv.org/content/10.6...

Asymmetric gene flow maintains range edges in a marine invertebrate | The American Naturalist: Vol 0, No ja

Three years since I collected the first amphipod for this paper and it is finally published! Feels like the end of an era.

We show that biased dispersal towards the range center maintains distinct edges in a beach amphipod.

www.journals.uchicago.edu/doi/10.1086/...

Eawag 2-year postdoc fellowship in Switzerland. Funding for Independent projects hosted in one of the research departments… come join us in Switzerland 🇨🇭! apply.refline.ch/673277/1335/...

'Modeling evolutionary rescue' doi.org/10.32942/X25...

Schematic representation of fitness landscapes. (A) Orange lines show maximum (dashed) and average (dotted) fitness of a population on a narrower peak (yellow circles), blue lines show the same for a wider peak (blue circles). (B) Trajectory of a population in a periodically changing environment with respect to a given fitness landscape (solid arrow) and with respect to an unseen other fitness landscape (dashed arrow). (C) Hypothetical “trapping” of the population in variable environments.

One of the most-viewed PNAS articles in the last week is “The variability of evolvability: Properties of dynamic fitness landscapes determine how phenotypic variability evolves.” Explore now: https://ow.ly/XouU50XWiiV

For more trending articles, visit https://ow.ly/AiXL50XWi81.

This story is absolutely wild. Did you know that avocados change sex over the course of a day? And that it's controlled by a single ancient balanced polymorphism? This is flat our crazy

Empseb is simply the best. If you're a PhD student of evolutionary biology, do go there!

Photo of a large number of scarlet monkeyflower plants growing in southern California (photo by MC Moazed).

Excited to share the first two publications from our PERSIST (Predicting Evolutionary Rescue of a Species in Space and Time) project. Thanks to NSF-DEB for supporting this work! (1/3)

Infrared radiation may be one of the most ancient plant signals to pollinating insects Harvard researchers have discovered that cycads—one of the oldest living lineages of seed plants—heat up their reproductive organs to attract beetle pollinators and the insects possess infrared sensor...

Before flowers evolved with attractive colors and scents, what did plants use to attract insect pollinators? Heat may be one ancient strategy.

Valencia-Montoya and colleagues report their study of cycads in Science. Journal link in first comment.

🧪🌍🌱🐝

phys.org/news/2025-12...

#pollinators

Developmental Bias and Evolution: A Regulatory Network Perspective A recurrent theme in evolutionary biology is to contrast natural selection and developmental constraint – two forces pitted against each other as competing explanations for organismal form. Despite its popularity, this juxtaposition is deeply ...

Could you clarify this a bit? I personally found the parts I read to be really illuminating, and thought that it wasn’t a critique of the mainstream per se (but it probably was, given the history around the field then and development of EES)
Also related: pmc.ncbi.nlm.nih.gov/articles/PMC...

Rapid adaptation follows experimental assisted gene flow in subset of annual monkeyflower populations https://www.biorxiv.org/content/10.64898/2025.12.02.689336v1

RegEvol: detection of directional selection in regulatory sequences through phenotypic predictions and phenotype-to-fitness functions https://www.biorxiv.org/content/10.1101/2025.11.26.690685v1

A lot has happened since our first announcement of #ExE2026, an evolutionary ecology conference hosted by @uniexecec.bsky.social in #Cornwall from June 29 to July 3 2026.

Have a look at our new website to see our confirmed plenary speakers, the mid-conference excursions, and more.

👉 evoxeco.uk 👈

Robustness of Ancestral Recombination Graph Inference Tools to Phasing Errors Ancestral Recombination Graphs (ARGs) are fundamental population genetic structures that encode the genealogical history of a sample of haplotypes along the genome. They have recently received substan...

We are excited to share our recent work on the surprising robustness of Ancestral Recombination Graph (ARG) inference tools to computational phasing errors, now available on BioRxiv: biorxiv.org/content/10.1....
This work is co-advised by @yundeng.bsky.social and Rasmus Nielsen.
1/7

Who has the lowest Erdos-Bacon-Epstein number?
statmodeling.stat.columbia.edu/2025/11/23/w...

Exciting!!

Most of the internet is down because of this one issue... this includes most academic journal websites!

Plos, Nature journals and biorxiv still seem to be up... for now. Made the mistake of closing many of the tabs I had open... sigh

ping @masahitotsuboi.bsky.social

Multivariate trait evolution: models for the evolution of the quantitative genetic G-matrix on phylogenies Abstract. Genetic covariance matrices (G-matrices) are a key focus for research and predictions from quantitative genetic evolutionary models of multiple t

academic.oup.com/evlett/advan...

So exciting to see a new method to model the evolution of G (and P) matrices on phylogenies. Another step in the direction of trying to bridge micro and macroevolution

📣CALL FOR PAPERS!

Upcoming SPECIAL ISSUE: Evolution at species range edges

Guest Edited by Shengman Liu, John Pannell and Sophie Karrenberg

More information here: academic.oup.com/jeb/pages/ca...

Effects of urbanization on local adaptation and eco-evolutionary feedbacks in white clover - Nature Ecology & Evolution Evidence of adaptation to the urban environment remains limited. Using reciprocal transplants of white clover in urban and rural environments, this study shows divergent selection on an antiherbivore ...

Part one of my common garden experiment is out today in Nature E&E!! We compare how urban and rural environments affect selection on HCN production, local adaptation, and eco-evo dynamics in white clover doi.org/10.1038/s415...

Out “in print”!

India’s agroecology programme, ‘Zero Budget Natural Farming’, delivers biodiversity and economic benefits without lowering yields - Nature Ecology & Evolution Analysis of crop yields, farmer income and bird species abundances identifies multiple positive outcomes of a large-scale Indian government-incentivized agroecology initiative.

Analysis of crop yields, farmer income and bird species abundances identifies multiple positive outcomes of a large-scale Indian government-incentivized agroecology initiative. 🧪

www.nature.com/articles/s41...

Cuts to science are happening everywhere, along with more and more austerity cuts. #SaveSwissResearch #SaveSwissTeaching

Hybridization and introgression are major evolutionary processes. Since the 1940s, the prevailing view has been that they shape plants far more than animals. In our new study (www.science.org/doi/10.1126/...
), we find the opposite: animals exchange genes more, and for longer, than plants

Illustration of projected changes in leaves. Three possible scenarios are shown as green shoots of different lengths with different densities of projected leaves.

Changes to a leaf trait due to adaptive evolution and plasticity can rescue subalpine populations from the detrimental effects of climate change
doi.org/10.1093/evle...

Now in @evolletters.bsky.social by Diane R Campbell, @jellyturtle.bsky.social, and Justin Kipness

Illustration by J. Francis

Alignment across taxonomic levels in strategies rather than in traits along elevational gradients Abstract. Trait variation along environmental gradients can indicate the different strategies that organisms have evolved in response to environmental hete

A bit late, but really happy to see my first PhD paper out!
We studied trait-elevation relationships in multiple traits spanning growth, size (both above and belowground) and leaf economics to understand whether these align at within- and among-species scales.

academic.oup.com/evlett/advan...

More from my PhD to follow in the next months! Give it a read if you're into alpine plants or elevational ranges! academic.oup.com/evlett/advan...

We sought to uncover the extent of alignment across scales by sampling the elevational ranges of seven Brassicaceae species. Additionally, we also tried understand which traits (or trait syndromes) are putatively involved in adaptation, based on parallel clines and alignment across taxonomic scales