Josh Jahner
@jpjahner.bsky.social
evolutionary biologist | assistant professor at new mexico tech | probably thinking about bighorns, butterflies, baseball, or board games | he/him
Reposted by Josh Jahner
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.
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
lizmandeville.github.io
November 24, 2025 at 2:35 PM
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.
Reposted by Josh Jahner
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_...
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.
sunybuffalo.qualtrics.com
November 18, 2025 at 3:58 PM
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_...
Reposted by Josh Jahner
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...
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...
www.biorxiv.org
November 19, 2025 at 7:10 PM
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...
Reposted by Josh Jahner
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
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
October 28, 2025 at 5:13 PM
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
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
Reposted by Josh Jahner
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...
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...
www.biorxiv.org
October 16, 2025 at 9:44 PM
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...
Reposted by Josh Jahner
Reposted by Josh Jahner
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.
October 14, 2025 at 8:08 PM
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.
Reposted by Josh Jahner
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...
🗓️Oct 28-30 at 9am PT / 12pm ET
🔗Register for this free event: us06web.zoom.us/webinar/regi...
October 10, 2025 at 7:29 PM
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...
🗓️Oct 28-30 at 9am PT / 12pm ET
🔗Register for this free event: us06web.zoom.us/webinar/regi...
Reposted by Josh Jahner
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 😬
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 😬
September 17, 2025 at 11:01 PM
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 😬
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 😬
We had a really great discussion in class about this paper today
www.nature.com/articles/s41...
www.nature.com/articles/s41...
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...
www.nature.com
September 17, 2025 at 5:52 PM
We had a really great discussion in class about this paper today
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Josh Jahner
Biology Department
xkcd.com
September 10, 2025 at 10:53 PM
Reposted by Josh Jahner
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-...
www.quantamagazine.org/what-is-the-...
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...
www.quantamagazine.org
September 3, 2025 at 1:58 PM
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-...
www.quantamagazine.org/what-is-the-...
Reposted by Josh Jahner
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/4lPmznS
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.
go.nature.com
August 30, 2025 at 10:21 AM
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/4lPmznS
Reposted by Josh Jahner
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/...
yeamanlab.weebly.com/uploads/5/7/...
August 20, 2025 at 8:19 PM
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/...
yeamanlab.weebly.com/uploads/5/7/...
Reposted by Josh Jahner
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/doi/10.1002/...
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...
onlinelibrary.wiley.com
August 13, 2025 at 4:56 PM
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/doi/10.1002/...
Reposted by Josh Jahner
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...
press release: www.eurekalert.org/news-release...
August 11, 2025 at 6:29 PM
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...
press release: www.eurekalert.org/news-release...
Reposted by Josh Jahner
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/...
www.pnas.org/doi/10.1073/...
July 30, 2025 at 4:14 PM
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/...
www.pnas.org/doi/10.1073/...
Reposted by Josh Jahner
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...
www.biorxiv.org/content/10.1...
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...
www.biorxiv.org
July 23, 2025 at 5:52 PM
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...
www.biorxiv.org/content/10.1...
Reposted by Josh Jahner
A thing that always just stops me in my tracks when like, reporting how pythons break down the skeletons of their prey in their stomachs and then suck up the calcium...is how GORGEOUS the cells of the intestine are.
They're really honestly beautiful. www.sciencenews.org/article/new-...
They're really honestly beautiful. www.sciencenews.org/article/new-...
A newly discovered cell helps pythons poop out the bones of their prey
The cells helps the snakes absorb the bones of their prey — and might show up in other animals that chomp their meals whole.
www.sciencenews.org
July 16, 2025 at 5:21 PM
A thing that always just stops me in my tracks when like, reporting how pythons break down the skeletons of their prey in their stomachs and then suck up the calcium...is how GORGEOUS the cells of the intestine are.
They're really honestly beautiful. www.sciencenews.org/article/new-...
They're really honestly beautiful. www.sciencenews.org/article/new-...
Reposted by Josh Jahner
When sun hits you, what does it *hit*? It rockets into your RNA, and the sound of colliding ribosomes and potholed RNA signals to your body to do something: produce a sunburn. My latest for @quantamagazine.bsky.social.
www.quantamagazine.org/rna-is-the-c...
www.quantamagazine.org/rna-is-the-c...
RNA Is the Cell’s Emergency Alert System | Quanta Magazine
How does a cell know when it’s been damaged? A molecular alarm, set off by mutated RNA and colliding ribosomes, signals danger.
www.quantamagazine.org
July 14, 2025 at 4:27 PM
When sun hits you, what does it *hit*? It rockets into your RNA, and the sound of colliding ribosomes and potholed RNA signals to your body to do something: produce a sunburn. My latest for @quantamagazine.bsky.social.
www.quantamagazine.org/rna-is-the-c...
www.quantamagazine.org/rna-is-the-c...
Reposted by Josh Jahner
Delighted to post some cool science - a collaboration with my former grad students Cassandre and Jill, and collaborator extraordinaire @erynmcfarlane.bsky.social!
doi.org/10.1093/jher...
doi.org/10.1093/jher...
A novel sex-associated genomic region in Catostomus fish species
Abstract. Genomic regions that influence sex are hypothesized to play a key role in evolutionary diversification, as sex determination mechanisms may promo
doi.org
June 30, 2025 at 7:20 PM
Delighted to post some cool science - a collaboration with my former grad students Cassandre and Jill, and collaborator extraordinaire @erynmcfarlane.bsky.social!
doi.org/10.1093/jher...
doi.org/10.1093/jher...
Reposted by Josh Jahner
Here's one of my insect comics to celebrate #InsectWeek, featuring my favorite butterfly the skipper! 🍃
June 25, 2025 at 7:06 PM
Here's one of my insect comics to celebrate #InsectWeek, featuring my favorite butterfly the skipper! 🍃
Reposted by Josh Jahner
Hey #Evol2025 - My colleague @waspvenom.bsky.social and I are looking for a postdoc for our #NSF - #USDA funded grant to understand the genetic basis of gall formation! Please see that attached ad, and feel free to talk to me @evolmtg.bsky.social, or contact Dr. Ellen Martinson directly!
June 21, 2025 at 7:44 PM
Hey #Evol2025 - My colleague @waspvenom.bsky.social and I are looking for a postdoc for our #NSF - #USDA funded grant to understand the genetic basis of gall formation! Please see that attached ad, and feel free to talk to me @evolmtg.bsky.social, or contact Dr. Ellen Martinson directly!
Reposted by Josh Jahner
Serious FOMO at #Evol2025 The broadcasted opening plenary by @jbyoder.org, "No data speaks for itself—but with data, we can speak for ourselves", was excellent! So much great & important stuff. I especially appreciated the presentation of social science methods to natural scientists on Queer in STEM
June 21, 2025 at 12:12 AM
Serious FOMO at #Evol2025 The broadcasted opening plenary by @jbyoder.org, "No data speaks for itself—but with data, we can speak for ourselves", was excellent! So much great & important stuff. I especially appreciated the presentation of social science methods to natural scientists on Queer in STEM
Reposted by Josh Jahner
maybe my favorite paper I've written, I have a synthesis out today early access in @asn-amnat.bsky.social today that attempts to answer a simple but slippery question: what is an elevational range? doi.org/10.1086/737130
June 11, 2025 at 9:44 PM
maybe my favorite paper I've written, I have a synthesis out today early access in @asn-amnat.bsky.social today that attempts to answer a simple but slippery question: what is an elevational range? doi.org/10.1086/737130