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Josh Jahner

@jpjahner.bsky.social
256 followers 532 following 34 posts

evolutionary biologist | assistant professor at new mexico tech | probably thinking about bighorns, butterflies, baseball, or board games | he/him

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Reposted by Josh Jahner
Joe Hanly @hanliconius.bsky.social · 27/09/2026
Very pleased to share that we just released a new ref genome for Colias eurytheme and added the first genome for C philodice to NCBI. Both chrom-level, made with pacbio hi-fi and ci-fi (=pac bio chromatin reads). Both from MD. Please use and share widely, I’ll have a citable source preprinted soon.
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Landscape Stewardship Collective @landscollective.bsky.social · 24/09/2026
Hello, Bluesky! 🌱 We’re Landscape Stewardship Collective, a new nonprofit connecting science with practical conservation & restoration. We translate genetic, ecological & climate information into practical decisions for land managers, seed growers & partners. landscollective.org
landscollective.org
Landscape Stewardship Collective | Restoration & Conservation
Landscape Stewardship Collective provides research and practical guidance for native plant restoration, seed sourcing, species conservation, and land stewardship.
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Brian O'Meara @omearabrian.bsky.social · 08/09/2026
Some resources and advice for those considering applying to the NSF GRFP this year (3 year grad school stipend: first year grad students, post-bachelor, and seniors might consider applying): brianomeara.info/posts/grfp_2... 🧪 #AcademicSky
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Wilson Ornithological Society @wilsonornithsoc.bsky.social · 25/08/2026
This week in "weird bird news," a bilateral gynandromorph Bobolink has showed up near Chigago. www.smithsonianmag.com/smart-news/a...
smithsonianmag.com
An 'Extremely Rare' Half-Male, Half-Female Bird Temporarily Took Up Residence Outside of Chicago
The unusual-looking bobolink is what's called a bilateral gynandromorph. The bird behaved like a male, eventually wooing a mate and raising fledglings
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Anonymous Potato @anonymouspotato.bsky.social · 05/08/2026
EcoEvoJobs 2026-27 just opened for business and we've already got 79 faculty / permanent jobs listed. Please repost! ecoevojobs.net
ecoevojobs.net
ecoevojobs.net 2026-27
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Dr. Valentina Alaasam @vale-alaasam.bsky.social · 03/08/2026
I am looking for PhD students and postdocs to join my lab at the University of Pittsburgh in Fall 2027. Anyone excited about urban evolution, hummingbirds, & community engagement, please reach out! And/or find me at #AOS2026 this week! More info here: www.valentina-alaasam.com
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Craig Jones @craig63jones.bsky.social · 01/08/2026
Sometimes the butterfly gods smile down on you... A bilateral gynandromorph Common Blue at Grafton Wood, Worcs 1/8/26. @westmbms-99.bsky.social @worcswt.bsky.social @savebutterflies.bsky.social @ukbutterflies.bsky.social
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Josh Jahner @jpjahner.bsky.social · 28/07/2026
www.abqjournal.com/news/the-las...
abqjournal.com
Searching for a butterfly that may no longer exist
Experts scour the Sacramento Mountains for the endangered checkerspot butterfly, last seen in the wild in 2022. Is it gone forever?
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Evolution Students @ssegrad.bsky.social · 27/07/2026
1/4 In today's funding climate, every grant and fellowship matters. Based on feedback from our GSAC Community Check-In Survey, we're building a growing hub of graduate & postdoctoral funding opportunities and job boards to make them easier to find. 🧵
Funding and job board curated by Dieter Lukas and Pro Manna
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Stephen Heard @stephenbheard.bsky.social · 08/07/2026
Nice post from Ken Hughes. Should you worry if your paper uses a strong hook to open the Introduction - but every other paper on the same topic uses the *same* strong hook?
brushingupscience.com
Beware the obvious opening sentence
If you ever visit Mt St Helens in Washington, I’ve got a game you can play. Each interpretive sign that you come across is a new round. You drink win the round if the sign mentions May 18, 1980. It…
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Hanna Kokko @kokkonut.bsky.social · 11/06/2026
Polymorphisms are fun to study, here is a butterfly one. Negative freq.dependence works to maintain things but where does it come from? Temporal variation works but not always! @koraklein.bsky.social and @chriswheat.bsky.social looked into this in detail. royalsocietypublishing.org/rstb/article...
royalsocietypublishing.org
Emergence time difference can create negative frequency dependence and maintain a colour polymorphism in Colias butterflies
Abstract. Many species of Colias butterflies show a female-limited colour polymorphism where the dominant Alba allele leads to white wings, faster developm
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Josh Jahner @jpjahner.bsky.social · 08/06/2026
Our new paper documents highly variable hybridization outcomes across years in sulphur butterflies academic.oup.com/evolut/artic...
academic.oup.com
Temporal dynamics of color polymorphism and hybridization in Colias butterflies
Abstract. Investigations into the genetic basis of color polymorphism have played a key role in our understanding of genetic architecture and the evolution
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Jessi Rick @jessi-rick.bsky.social · 06/06/2026
I'm recruiting a master's student for Fall 2026 to join my lab at The University of Arizona, to work on a project investigating the population genomics and hybridization dynamics of native and invasive leopard frogs in central Arizona! 🐸 🧬 Ad with details is posted below.
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bioGraphic @biographic.bsky.social · 02/06/2026
We've got a big feature out today (with gorgeous photographs) about the Ukrainian conservationists working to save a herd of bison from the ongoing Russian invasion. It's about the hope that conservation can offer in times of war, and the ways that animals' lives are entangled human geopolitics.
biographic.com
Saving Bison as Bombs Fall - bioGraphic
Amid the destruction of war, Ukrainian conservationists remain determined to help a European bison herd persevere.
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Tom Astle @tjalamont.bsky.social · 04/06/2026
#Bugsky 🐙🌿 Shared with me by a fof in SoCal - this is a gynandromorph (both male & female) valley carpenter bee (Xylocopa sonorina). Females are black, males orange, so the extreme color dimorphism really stands out. Per Doug Yanega at UC Riverside, bee gynandromorphs he’s seen are mosaic instead—
A photo looking down on an unusual bee clinging to a green shirt. The bee is a stout bee called a carpenter bee, but what’s unusual is that it is both male and female, known as a gynandromorph. In this particular species (Xylocopa sonorina), females are jet black and males are fuzzy orange. This one has an abdomen that is divided into four perfect quadrants, like a checkerboard, alternating orange and black. The thorax is mostly black but with some orange.
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Andrew Gelman et al. @statmodeling.bsky.social · 29/05/2026
15 new articles on statistical workflow! statmodeling.stat.columbia.edu/2026/05/29/1...
statmodeling.stat.columbia.edu
15 new articles on statistical workflow! | Statistical Modeling, Causal Inference, and Social Science
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Evolution @journal-evo.bsky.social · 26/05/2026
"Sixty Years Later, His Scientific Dream Comes True" Press from @ucanr.edu on “Temporal Dynamics of Color Polymorphism and Hybridization in Colias Butterflies," by Joshua P. Jahner and colleagues: ucanr.edu/blog/bug-squ... Read the original study: doi.org/10.1093/evol...
ucanr.edu
Sixty Years Later, His Scientific Dream Comes True | Bug Squad
Image
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Jocelyn Poissant @jocelynpoissant.bsky.social · 22/05/2026
Great to see this study by @sam-deakin.bsky.social and Anita Michalak published in Evolutionary Applications. Using genomic data from >750 caribou and hierarchical structure analyses, we show that genetic clusters do not align with current conservation units in western Canada doi.org/10.1111/eva....
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Josh Jahner @jpjahner.bsky.social · 21/05/2026
Attendees commandeer New Mexico Tech town hall to oppose proposed Socorro data center, solar array sourcenm.com/2026/05/20/a...
sourcenm.com
Attendees commandeer New Mexico Tech town hall to oppose proposed Socorro data center, solar array • Source New Mexico
New Mexico residents commandeered a town hall to oppose to a proposal to build a data center and solar array on 10,000 acres of nearby land.
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Society for the Study of Evolution @sse-evolution.bsky.social · 19/05/2026
Join us at virtual #Evol2026 this Friday to hear from the finalists for the SSE Hamilton Award for Outstanding Student Presentation! This symposium is in 3 sessions starting at 11 am Eastern.
Text: Virtual Evolution 2026 Society for the Study of Evolution Hamilton Award Symposium, Friday, May 22 11:00 AM - 5:00 PM Eastern (GMT-4).
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Gina Baucom @gbaucom.bsky.social · 18/04/2026
👋 👋 SSE members, I hope you'll join me May 21 for the virtual SSE Presidential Symposium: Navigating Uncertainty: Individual Resilience and Collective Action in Evolutionary Biology Pls RT to help get the word out!
NAVIGATING UNCERTAINTY Individual Resilience and Collective Action in Evolutionary Biology
LIGHTNING TALKS: 9:15 - 10:30 AM EDT

Focus on the collective: what can our community do in a time of uncertainty?

PROTHAMA MANNA, CLEMSON UNIV.
MOHAMED NOOR, DUKE UNIVERSITY
RUTH SHAW, UNIV. OF MINNESOTA JOSEPH GRAVES, NC A&T STATE UNIV.
SCOTT EDWARDS, HARVARD UNIV.
EMILY JOSEPHS, MICHIGAN STATE UNIV.
ALISON DAVIS RABOSKY, UNIV. OF MICHIGAN

WORKSHOP & BREAKOUTS: 11 - 12:30 PM EDT
Focus on the individual: how scientists can respond constructively, creatively, and sustainably in the face of instability
NELIA VIVEIROS, UNIV. OF COLORADO ANSCHUTZ MEDICAL CAMPUS
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Society for the Study of Evolution @sse-evolution.bsky.social · 27/02/2026
💬 In the second installment of The Evolution Exchange, retired NSF Program Officer Dr. Sam Scheiner returns to discuss how to craft a successful research proposal. Watch or read the transcript here: www.evolutionsociety.org/the-evolutio...
Text: The Evolution Exchange, a monthly conversation series from the Society for the Study of Evolution. Outlines of cartoon heads with speech bubbles.
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Amanda V. Meuser @amanda-meuser.bsky.social · 30/03/2026
I'm so so excited to share that the research I've done for my master's thesis is finally published in Molecular Ecology! ✨ We found that almost 1/3 of sampled Leuciscid minnows were hybrids 🐠 This includes hybrid crosses never before noted in scientific literature!! 🐟 doi.org/10.1111/mec....
doi.org
Extensive Multi‐Species Hybridization Between Leuciscidae Minnow Species
Anthropogenic disturbances can disrupt ecosystems and alter species population dynamics. Interspecific hybridization is common between genetically related organisms, especially once reproductive barr...
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Society for the Study of Evolution @sse-evolution.bsky.social · 24/02/2026
SSE is pleased to offer free virtual #Evol2026 registration to all SSE members residing in 152 countries and territories around the world including India, Brazil, Mexico, and Colombia. Request your free registration code today! www.evolutionsociety.org/index.php?mo...
Evolution 2026 meeting logo. Clilp art of a globe and laptop showing a virtual presentation. Text: Society for the Study of Evolution Global Meeting Participation.
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Jessi Rick @jessi-rick.bsky.social · 23/01/2026
Applications for this UA postdoc fellowship are due next week— please reach out if you’re looking for a conservation-focused postdoc and would be interested in working with me!
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Randall Munroe @xkcd.com · 21/01/2026
How long would you survive with no DNA? What the latest What If? video in collaboration with @minuteearth.bsky.social! www.youtube.com/watch?v=s3oL...
youtube.com
How long would you survive with no DNA?
YouTube video by xkcd's What If?
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Jessie Williamson @jlwilliamson.bsky.social · 16/01/2026
The Wyoming Game & Fish Dept. is hiring two Black Rosy-Finch technicians to conduct alpine surveys in Wyoming's high elevation mountains during June 1st to Aug 31st 2026: www.governmentjobs.com/careers/wyom.... Spread the word!
governmentjobs.com
Job Opportunities | .
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Alex Fraik @akfraik.bsky.social · 14/01/2026
Job alert: NOAA NWFSC & UW are looking for a postdoc (ASAP) in Seattle study foraging ecology of Cook Inlet beluga whales using eDNA. Genetics/ecology/eDNA experience preferred. Interested candidates reach out to kim.parsons@noaa.gov or rpkelly@uw.edu directly. #eDNA #ConsGen
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Josh Jahner @jpjahner.bsky.social · 22/12/2025
I am recruiting a MS student in Biology at New Mexico Tech with an anticipated start date of Fall 2026 to work on the applied evolutionary genetics of wild populations with conservation or management concerns (butterflies, bighorn sheep). Please see the attached advertisement for more info.
An image of a recruitment advertisement for a MS position at New Mexico Tech
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Neal Agarwal @neal.fun · 10/12/2025
Made a site comparing the sizes of living things :) The great Julius Csotonyi spent 5 months painting over 60 illustrations for the site, no ai used > neal.fun/size-of-life/
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gavin jones @ecologyofgavin.bsky.social · 05/12/2025
I’m recruiting a PhD and MSC student for fall 2026 working on the movement ecology and conservation of Mexican spotted owls in SW forests and rocky canyonlands. Exciting partnership with Los Alamos National Laboratory. Great vibrant lab group, high impact research! 🦉 gavinmjones.com/opportunities/
gavinmjones.com
Opportunities
***PhD and MSc openings – Movement ecology and conservation*** I will periodically support graduate students, postdocs, and other staff through the Biology Department at the University of New…
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Liz Mandeville @lizmandeville.bsky.social · 24/11/2025
I'm recruiting a new master's student for fall 2026 in my lab at Northern Michigan University @bionmu.bsky.social ! Students with interests in evolution of freshwater fish are encouraged to apply. Please see our lab website lizmandeville.github.io and the attached advertisement for more information.
lizmandeville.github.io
Mandeville Lab
Fish are so delightfully weird. We study the evolutionary genetics and ecology of freshwater fishes, plus a few more things, at Northern Michigan University
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Resources in Inclusive Evolution Education (RIE2) @inclusiveevoedu.bsky.social · 18/11/2025
TL;DR We're looking for biology/evolution instructors in the US and Canada to test the impacts of inclusive evolutionary biology educational materials on undergraduate learning (you will be compensated). Pasting the official recruitment info in thread below. sunybuffalo.qualtrics.com/jfe/form/SV_...
sunybuffalo.qualtrics.com
Qualtrics Survey | Qualtrics Experience Management
The most powerful, simple and trusted way to gather experience data. Start your journey to experience management and try a free account today.
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Eryn McFarlane @erynmcfarlane.bsky.social · 19/11/2025
Amanda Sabatino, @jpjahner.bsky.social and I have a new paper on @biorxiv-evobio.bsky.social. Amanda, in her undergraduate thesis work, found variation in Colias colour phenotypes is associated with different metrics of urbanization in Toronto. www.biorxiv.org/content/10.1...
biorxiv.org
Anthropogenic factors explain wing colour variation in Colias (Lepidoptera: Pieridae) butterflies across the Toronto urbanization gradient
Hybridization, or interbreeding between two previously diverged populations, is increasing due to human influences on the environment. Rates of hybridization might be increasing particularly quickly a...
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Ben Tumolo @bbtumolo.bsky.social · 28/10/2025
Are you interested in an MS position in Stream Ecology? My lab (www.benjamintumolo.com) is recruiting a Master's student to join us at Northern Michigan University. 🐛🧪🕸️🍂🌊 Please get in contact if you are interested, and pass on this ad to anyone you know that might be! Apply by Dec 16
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Jocelyn Poissant @jocelynpoissant.bsky.social · 16/10/2025
New lab preprint by joint first authors Samuel Deakin and Anita Michalak 😀: Glacial history and landscape features shape the hierarchical population genetic structure of woodland caribou (Rangifer tarandus caribou) in western Canada www.biorxiv.org/content/10.1...
biorxiv.org
Glacial history and landscape features shape the hierarchical population genetic structure of woodland caribou (Rangifer tarandus caribou) in western Canada
Caribou, listed as a species at risk across Canada, have experienced a wide range of evolutionary and selective pressures at multiple scales, from large-scale range shifts and recolonisations driven b...
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Mike Wiser @drmikewiser.bsky.social · 15/10/2025
xkcd images I use in my classes: a thread When I teach phylogenetics (part 1): xkcd.com/1211/
xkcd.com
Birds and Dinosaurs
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Jessie Williamson @jlwilliamson.bsky.social · 14/10/2025
My lab is hiring a 2-yr hummingbird evolution and genomics postdoc and a 1-yr salaried research and lab tech. Both with full U. Wyoming benefits. Please spread the word! Info below. Best consideration date Nov 1, start dates early Spring 2026.
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The Xerces Society for Invertebrate Conservation @xercessociety.bsky.social · 10/10/2025
Join us for a free 3-day virtual symposium on firefly research & conservation! Each day will include 6 presentations & time for networking. Everyone interested in fireflies is invited! 🪲💡 🗓️Oct 28-30 at 9am PT / 12pm ET 🔗Register for this free event: us06web.zoom.us/webinar/regi...
“Virtual Firefly Symposium: Science, Conservation, and Education” A female Florida intertidal firefly perched on a red mangrove leaf at a nature center in Broward County, Florida.
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Chris Moore @mutualismecology.bsky.social · 18/09/2025
Dear evolution peeps, Did I dream this up, or was there a newer unified-type species concept paper/synthesis published in the past several years? I thought I read and studied one, but I can’t find it/any evidence that exists. Thank you for your help with my brain 😬
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Josh Jahner @jpjahner.bsky.social · 17/09/2025
We had a really great discussion in class about this paper today www.nature.com/articles/s41...
nature.com
Functional synonymous mutations and their evolutionary consequences - Nature Reviews Genetics
Synonymous mutations, once deemed neutral, have been shown to influence gene expression and organismal fitness by affecting transcription, mRNA processing, translation and protein folding. In this Per...
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Scott P. Egan @scottpegan.bsky.social · 10/09/2025
xkcd.com/3140
xkcd.com
Biology Department
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Quanta Magazine @quantamagazine.org · 03/09/2025
At 26, during the Reign of Terror in France, Jean-Baptiste Joseph Fourier narrowly avoided the guillotine. A decade later, he made a discovery that changed mathematics forever. @shalmawegs.bsky.social reports: www.quantamagazine.org/what-is-the-...
quantamagazine.org
What Is the Fourier Transform? | Quanta Magazine
Amid the chaos of revolutionary France, one man’s mathematical obsession gave way to a calculation that now underpins much of mathematics and physics. The calculation, called the Fourier transform, de...
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Nature @nature.com · 30/08/2025
For some three billion years, unicellular organisms ruled Earth. Then, around one billion years ago, a new chapter of life began go.nature.com/4lPmznS
go.nature.com
How did life get multicellular? Five simple organisms could have the answer
Nature - Single-celled species that often stick together in colonies have researchers rethinking the origin of animals.
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Sam Yeaman @samyeaman.bsky.social · 20/08/2025
I'm looking to recruit a PhD student to study patterns of local adaptation and introgression across the spruce hybrid zone in the Rockies near Calgary. Projects can include field work, bioinformatics, pop gen theory, or comparison to plant/ conifer species yeamanlab.weebly.com/uploads/5/7/...
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Eryn McFarlane @erynmcfarlane.bsky.social · 13/08/2025
Shirley Chen's paper from my lab on the dilution and amplification hypotheses regarding the biodiversity-disease relationship. onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Reappraisal of the Dilution and Amplification Effect Framework: A Case Study in Lyme Disease
The biodiversity–disease relationship posits two hypotheses: the dilution effect (where there's a negative relationship between biodiversity and disease risk) and the amplification effect (where ther...
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Sarah W. Fitzpatrick @swfitz.bsky.social · 11/08/2025
Excited to share our new paper led by @alexlewanski.bsky.social showing largely positive, multi-decadal consequences of translocations in Red-cockaded woodpeckers at Avon Park Air Force Range in central Florida: www.pnas.org/doi/10.1073/... press release: www.eurekalert.org/news-release...
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Trevor Faske @trevorfaske.bsky.social · 30/07/2025
Very excited to have our study come out looking at multiple plant mosaic hybrid zones and their implications for hybrids to act as "sutures" of species ranges. We use genomic data to project shifts into future climates and discuss impacts on conservation/management. www.pnas.org/doi/10.1073/...
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Liz Mandeville @lizmandeville.bsky.social · 23/07/2025
I'm thrilled to share more cool fish genetics, led by former MSc student Amanda Meuser, and with former student Amy Pitura and collaborator @erynmcfarlane.bsky.social. This one is about minnow hybrids! www.biorxiv.org/content/10.1...
biorxiv.org
Extensive multi-species hybridization between Leuciscidae minnow species
Anthropogenic disturbances can disrupt ecosystems and alter species population dynamics. Interspecific hybridization is common between genetically related organisms, especially once reproductive barri...
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