Megan Barkdull

@meganbarkdull.bsky.social

Asst. Curator of Entomology @nhm.org | evolution, genomes, museums | @cornelluniversity.bsky.social & New College of Florida alumna | she/her. | views are my own. mbarkdull.github.io

I'm hiring a postdoc for our NSF IntBIO project on songbird behavior, physiology and fitness! Start date as early as April 1 or as late as Sept 2027. Emphasis on behavioral endocrinology and transcriptomics, plus field ornithology based on applicant interests: academicjobsonline.org/ajo/jobs/33216.

Duke University, Biology

Job #AJO33216, Postdoctoral Associate, Biology, Duke University, Durham, North Carolina, US

academicjobsonline.org

A good demonstration of how absurdly small insects can get. I was looking at a relatively small (2.5 mm) pteromalid wasp and noticed something stuck to its wing. It was an even smaller wasp.

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One reason Prop. 38 in CA is SO bad is that it is written such that only one institute could get ~$4 billion in funding and that Institute is run by the person sponsoring the bill. Here are some of the constraints the Prop. puts on the institute to guarantee only one place gets the money:

Jonathan Eisen@phylogenomics.bsky.social · last wk.

The @sfchronicle.com headline says all you need to know: Prop 38 is one of the most noxious deposits on California’s political dung heap in years See www.sfchronicle.com/opinion/edit...

Endorsement: Prop 38 is one of the most noxious deposits on California’s political dung heap in years

California voters! Read this on Prop 38. I'm a NO! www.sfchronicle.com/opinion/edit... One person behind this is financier Michael Milken, known as the “junk bond king.” He was pardoned by President Donald Trump in 2020 for his 1990 guilty plea to racketeering and securities fraud. VOTE NO!

Endorsement: Prop 38 is one of the most noxious deposits on California’s political dung heap in years

OPINION: Prop 38 would give billions to an institute co-founded by billionaire Michael Milken, also known as the “junk bond king,” who was pardoned by Trump in 2020, the editorial board writes.

sfchronicle.com

Follow the money NO on Prop. 38 Prop. 38 comes wrapped in the promise of medical breakthroughs. Read the fine print: $8.4 billion in borrowing, decades of taxpayer payments and $4.2 billion steered to one unnamed institution. We’re for curing disease not writing blank checks bit.ly/4j9CsYM

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New work to share! Pangenome studies treat gene presence/absence independently, but genes work together in pathways. By focusing on the covariance of gene loss, we show the Arabidopsis dispensable genome has modular co-evolutionary structure reflecting the biological organization of the plant 1/

Gene functional-state covariance reveals modular structure in the Arabidopsis thaliana dispensable genome

Classical multilocus theory predicts that selection acting on combinations of loci can maintain non-random associations among allelic states, causing selection to act on multilocus genotypes rather than individual alleles. Across eukaryotic species, pangenome studies have documented thousands of genes that vary in functional status between individuals, yet this variation is analyzed as if each gene evolves independently. Here we test for non-random association within the dispensable pangenome across 1,012 natural genotypes of Arabidopsis thaliana to better understand the structure and evolution of eukaryotic pangenomes. Genome-wide pairwise association testing of loss-of-function alleles across genotypes identified 150,033 significantly covarying gene pairs among 5,679 unique genes after controlling for kinship and population structure. Most associations were between genes on different chromosomes, and covarying gene pairs showed greater co-expression and functional similarity than expected by chance. Network analysis revealed a non-random higher-order architecture comprising stable functional communities with distinct biological functions and structured connectivity among communities. The enriched functions and connectivity of communities revealed a tight coupling of modules involving plant immunity, environmental response, and specialized metabolism, highlighting how these systems integrate and evolve in response to dynamic ecological pressures. Taken together, these results show that the dispensable genome has a complex higher-order structure driven by functionally interacting genes, and that variation in gene content provides a population-scale resource for investigating the organization and evolution of biological systems. ### Competing Interest Statement The authors have declared no competing interest. Division of Integrative Organismal Systems, 2208944

biorxiv.org

Get ready for #BlackMammalogists Week 2026! Oct 11-17th. Lots of virtual opportunities plus our first in-person event on Oct 16 at @nhm.org ! 🎉

Black Mammalogists Week@blackmammalogists.bsky.social · 3w ago

GET READY 🥳 Next week #BlackMammalogistsWeek2026 begins! Here's a quick rundown of the many cool and informative events happening from Oct. 11th - Oct. 17th. Giveaways, panels, another drawing workshop, all culminating in our in-person event at NHMLAC in LA on Friday! Join us in the fun!

Black Mammalogists Week 2026: Theme: Celebrating Resilience. October 11-17th. Email: blackmammalogists@gmail.com, bluesky: blackmammalogists.bsky.social, instagram: BlackMammalogistsWeek; twitter: BlkMammalogists. There's a QR code to our website, where you can get more information on events and our sponsors. Please join us in uplifting the efforts of current and upcoming #BlackMammalogists across the Diaspora. Goal: to form conscious, fruitful connections while illuminating historic and present-day contributions from Black folks to the field of Mammalogy through online and in-person events! What to expect: giveaways, panels, games, workshops and more! We hope to see you there.

Are you a postdoc or new faculty member who would benefit from an invited talk? My department is looking to bring someone for spring. Due to budgetary reasons, you must be either: 1. In driving distance to Orono, ME OR 2. Working on alpine or Arctic plants