Cheyenne Payne
@cheyennepayne.bsky.social
postdoc @ NOAA + UCSC ~ conservation, genomics, evolution of fishes 🐟🧬🌝 | she/her
Reposted by Cheyenne Payne
Nature research paper: An ancient recombination desert is a speciation supergene in placental mammals
go.nature.com/47UiBWa
go.nature.com/47UiBWa
An ancient recombination desert is a speciation supergene in placental mammals - Nature
Deep learning methods identified a large and evolutionarily conserved X-linked low recombination region in placental mammals that serves as both a barrier to gene flow in hybridizing lineages and an accurate phylogenomic marker.
go.nature.com
November 14, 2025 at 2:03 PM
Nature research paper: An ancient recombination desert is a speciation supergene in placental mammals
go.nature.com/47UiBWa
go.nature.com/47UiBWa
Reposted by Cheyenne Payne
Can confirm. I am okay and more motivated than ever to speak up.
Nothing scares this administration more. Their power lies in our silence.
Nothing scares this administration more. Their power lies in our silence.
NIH program officer @jenna-m-norton.bsky.social has been placed on admin leave, sources say.
Norton has been outspoken about the Trump administration's dismantling of science, and she signed the Bethesda Declaration.
Bhattacharya has said that "science is dead without free speech".
Norton has been outspoken about the Trump administration's dismantling of science, and she signed the Bethesda Declaration.
Bhattacharya has said that "science is dead without free speech".
November 14, 2025 at 2:37 AM
Can confirm. I am okay and more motivated than ever to speak up.
Nothing scares this administration more. Their power lies in our silence.
Nothing scares this administration more. Their power lies in our silence.
Reposted by Cheyenne Payne
Beyond excited to share my PhD work thus far, now up as a preprint! We found that a transposable element insertion is responsible for the recent evolution of an novel color trait. Feeling thankful to everyone who has helped in this project and thrilled to continue learning about "sparkle"!
I am so excited to share new work on a TE insertion that regulates iridescence in swordtails, led by fantastic grad student @nadiahaghani.bsky.social and with help from many coauthors! In a time that has been so difficult to navigate, this & other projects have kept my spirits up: shorturl.at/NE65A
Insertion of an invading retrovirus regulates a novel color trait in swordtail fish
For over a century, evolutionary biologists have been motivated to understand the mechanisms through which organisms adapt to their environments. Coloration and pigmentation are remarkably variable wi...
shorturl.at
November 12, 2025 at 10:58 PM
Beyond excited to share my PhD work thus far, now up as a preprint! We found that a transposable element insertion is responsible for the recent evolution of an novel color trait. Feeling thankful to everyone who has helped in this project and thrilled to continue learning about "sparkle"!
✨ this is the skin of a swimmer, Bella ✨
awesome work led by @nadiahaghani.bsky.social that identifies what makes a swordtail fish sparkle 🪩
awesome work led by @nadiahaghani.bsky.social that identifies what makes a swordtail fish sparkle 🪩
November 12, 2025 at 10:22 PM
✨ this is the skin of a swimmer, Bella ✨
awesome work led by @nadiahaghani.bsky.social that identifies what makes a swordtail fish sparkle 🪩
awesome work led by @nadiahaghani.bsky.social that identifies what makes a swordtail fish sparkle 🪩
Reposted by Cheyenne Payne
Super excited that the bulk of my PhD work is now preprinted! Here we used whole-community competition, or coalescence, experiments to quantify selection acting on genetically diverged strains within larger communities. (1/n)
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
www.biorxiv.org
November 11, 2025 at 5:15 PM
Super excited that the bulk of my PhD work is now preprinted! Here we used whole-community competition, or coalescence, experiments to quantify selection acting on genetically diverged strains within larger communities. (1/n)
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Cheyenne Payne
In our last thread, we left the jelly-enjoyers of Bluesky with a cliff hanger ending, in what one eager onlooker described as soap opera science 😜 ... wait no more, we are back! Grab your popcorn shrimp and come with us on a journey spanning more than...
bsky.app/profile/iwan...
bsky.app/profile/iwan...
Kailua Beach, Hawai’i: The first time I laid eyes on a By-the-wind sailor, I stopped dead in my tracks, dusted the sand off my hands, grabbed my iphone and...
November 10, 2025 at 10:13 PM
In our last thread, we left the jelly-enjoyers of Bluesky with a cliff hanger ending, in what one eager onlooker described as soap opera science 😜 ... wait no more, we are back! Grab your popcorn shrimp and come with us on a journey spanning more than...
bsky.app/profile/iwan...
bsky.app/profile/iwan...
Reposted by Cheyenne Payne
Insertion of an invading retrovirus regulates a novel color trait in swordtail fish https://www.biorxiv.org/content/10.1101/2025.11.07.687308v1
November 11, 2025 at 3:51 PM
Insertion of an invading retrovirus regulates a novel color trait in swordtail fish https://www.biorxiv.org/content/10.1101/2025.11.07.687308v1
Reposted by Cheyenne Payne
In the century leading up to 1975, nearly 6000 freighters went down in the Great Lakes.
The Edmund Fitzgerald was the last.
The last. In 50 years, not a single commercial freighter has been lost in the Great Lakes.
Why?
It's NOAA. Of course it's NOAA.
The Edmund Fitzgerald was the last.
The last. In 50 years, not a single commercial freighter has been lost in the Great Lakes.
Why?
It's NOAA. Of course it's NOAA.
November 11, 2025 at 1:50 AM
In the century leading up to 1975, nearly 6000 freighters went down in the Great Lakes.
The Edmund Fitzgerald was the last.
The last. In 50 years, not a single commercial freighter has been lost in the Great Lakes.
Why?
It's NOAA. Of course it's NOAA.
The Edmund Fitzgerald was the last.
The last. In 50 years, not a single commercial freighter has been lost in the Great Lakes.
Why?
It's NOAA. Of course it's NOAA.
Reposted by Cheyenne Payne
Should we kill trees because they're ugly? At one point, the National Park Service did just that.
Modern conservation is loaded with value judgments.
Modern conservation is loaded with value judgments.
Witches’ Broom and the Conservation of “Ugly”
Should we kill trees because they’re ugly? At one point, conservationists did. Fortunately, times can change.
blog.nature.org
November 7, 2025 at 3:44 PM
Should we kill trees because they're ugly? At one point, the National Park Service did just that.
Modern conservation is loaded with value judgments.
Modern conservation is loaded with value judgments.
Reposted by Cheyenne Payne
BREAKING: NASA Goddard Space Flight Center is illegally closing 13 campus buildings (including ~100 laboratories).
Report coming from GESTA, the Goddard employee union
Report coming from GESTA, the Goddard employee union
November 2, 2025 at 4:55 AM
BREAKING: NASA Goddard Space Flight Center is illegally closing 13 campus buildings (including ~100 laboratories).
Report coming from GESTA, the Goddard employee union
Report coming from GESTA, the Goddard employee union
Reposted by Cheyenne Payne
Grateful to spend two days on the Klamath watching chinook, liberated by dam removal, return to streams from which they’d been precluded since the Titanic sank. Fish are everywhere, in numbers that stagger the mind & locations that biologists figured would take years to repopulate. Too beautiful.
November 5, 2025 at 9:17 PM
Grateful to spend two days on the Klamath watching chinook, liberated by dam removal, return to streams from which they’d been precluded since the Titanic sank. Fish are everywhere, in numbers that stagger the mind & locations that biologists figured would take years to repopulate. Too beautiful.
Reposted by Cheyenne Payne
@joann-trejo.bsky.social, @marymunson4.bsky.social and I have a commentary in @natcellbio.nature.com on recent attacks on DEI in biomedical research: "If scientific research, especially biomedical research, is meant to serve everyone, then it requires that everyone has an opportunity to participate"
Scaling back DEI programmes and the loss of scientific talent
Nature Cell Biology - Programmes that support diversity, equity and inclusion (DEI) in science are under attack in the USA. Data indicate that diversity in the scientific workforce increases...
www.nature.com
October 23, 2025 at 4:36 PM
@joann-trejo.bsky.social, @marymunson4.bsky.social and I have a commentary in @natcellbio.nature.com on recent attacks on DEI in biomedical research: "If scientific research, especially biomedical research, is meant to serve everyone, then it requires that everyone has an opportunity to participate"
Reposted by Cheyenne Payne
Ecology faces an accumulation of models but not an accumulation of confidence. Our new paper w/ Jonathan Levine www.nature.com/articles/s41... in @natecoevo.nature.com introduces a rigorous test rooted in queueing theory to falsify inadequate models and build confidence in useful ones.
Rigorous validation of ecological models against empirical time series - Nature Ecology & Evolution
Validating theoretical models against empirical data presents challenges. Here the authors present an assumption-light method to validate ecological models against time series data, along with a dedic...
www.nature.com
October 27, 2025 at 1:49 PM
Ecology faces an accumulation of models but not an accumulation of confidence. Our new paper w/ Jonathan Levine www.nature.com/articles/s41... in @natecoevo.nature.com introduces a rigorous test rooted in queueing theory to falsify inadequate models and build confidence in useful ones.
Reposted by Cheyenne Payne
Chinook salmon have returned to the Klamath River in Oregon after being absent for more than a century. The announcement came roughly a year after the last of four major hydroelectric dams on the river was demolished.
A River Restoration in Oregon Gets Fast Results: The Salmon Swam Right Back
The fish had been missing from the headwaters of the Klamath River for more than a century. Just a year after the removal of a final dam, they’ve returned.
nyti.ms
October 29, 2025 at 2:30 PM
Chinook salmon have returned to the Klamath River in Oregon after being absent for more than a century. The announcement came roughly a year after the last of four major hydroelectric dams on the river was demolished.
Reposted by Cheyenne Payne
“More than 150,000 people have died across the country and about 12 million have fled their homes, creating one of the worst humanitarian crises.”
This is a genocide in Sudan.
This is a genocide in Sudan.
El-Fasher: Rebel group claims capture of key city in Sudan
The fall of el-Fasher would cement the RSF's control of the west and reinforces a de facto split in the nation.
www.bbc.co.uk
October 27, 2025 at 8:50 PM
“More than 150,000 people have died across the country and about 12 million have fled their homes, creating one of the worst humanitarian crises.”
This is a genocide in Sudan.
This is a genocide in Sudan.
Reposted by Cheyenne Payne
How does life evolve to adapt to modern cities?
Out now in Science, my PhD work with @lindymcbr.bsky.social uncovers the ancient origin of the “London Underground mosquito” – one of the most iconic examples of urban adaptation.
🧵(1/n)
@science.org
www.science.org/doi/10.1126/science.ady4515
Out now in Science, my PhD work with @lindymcbr.bsky.social uncovers the ancient origin of the “London Underground mosquito” – one of the most iconic examples of urban adaptation.
🧵(1/n)
@science.org
www.science.org/doi/10.1126/science.ady4515
Ancient origin of an urban underground mosquito
Understanding how life is adapting to urban environments represents an important challenge in evolutionary biology. In this work, we investigate a widely cited example of urban adaptation, Culex pipie...
www.science.org
October 25, 2025 at 4:46 AM
How does life evolve to adapt to modern cities?
Out now in Science, my PhD work with @lindymcbr.bsky.social uncovers the ancient origin of the “London Underground mosquito” – one of the most iconic examples of urban adaptation.
🧵(1/n)
@science.org
www.science.org/doi/10.1126/science.ady4515
Out now in Science, my PhD work with @lindymcbr.bsky.social uncovers the ancient origin of the “London Underground mosquito” – one of the most iconic examples of urban adaptation.
🧵(1/n)
@science.org
www.science.org/doi/10.1126/science.ady4515
Reposted by Cheyenne Payne
Why do complex traits differ in their genetic architecture?
In our new PLOS Biology paper, we will try to convince you that two simple scaling laws drive differences in the number, effect sizes and frequencies of causal variants affecting complex traits.
Thread:
journals.plos.org/plosbiology/...
In our new PLOS Biology paper, we will try to convince you that two simple scaling laws drive differences in the number, effect sizes and frequencies of causal variants affecting complex traits.
Thread:
journals.plos.org/plosbiology/...
Simple scaling laws control the genetic architectures of human complex traits
Genome-wide association studies have revealed that the genetic architectures of complex traits vary widely. This study shows that differences in architectures of highly polygenic traits arise mainly f...
journals.plos.org
October 24, 2025 at 1:51 AM
Why do complex traits differ in their genetic architecture?
In our new PLOS Biology paper, we will try to convince you that two simple scaling laws drive differences in the number, effect sizes and frequencies of causal variants affecting complex traits.
Thread:
journals.plos.org/plosbiology/...
In our new PLOS Biology paper, we will try to convince you that two simple scaling laws drive differences in the number, effect sizes and frequencies of causal variants affecting complex traits.
Thread:
journals.plos.org/plosbiology/...
Reposted by Cheyenne Payne
Proud of the latest edition of my free intro biostats book.
gitrepo: github.com/ybrandvain/b...
book: ybrandvain.github.io/biostats/
Not complete but at a good point to take a break, and I think its quite usable
dm me with comments , ideas etc
gitrepo: github.com/ybrandvain/b...
book: ybrandvain.github.io/biostats/
Not complete but at a good point to take a break, and I think its quite usable
dm me with comments , ideas etc
Applied Biostatistics
ybrandvain.github.io
October 24, 2025 at 2:33 PM
Proud of the latest edition of my free intro biostats book.
gitrepo: github.com/ybrandvain/b...
book: ybrandvain.github.io/biostats/
Not complete but at a good point to take a break, and I think its quite usable
dm me with comments , ideas etc
gitrepo: github.com/ybrandvain/b...
book: ybrandvain.github.io/biostats/
Not complete but at a good point to take a break, and I think its quite usable
dm me with comments , ideas etc
Reposted by Cheyenne Payne
One of the most exciting works of my career, years in the making. We used high-throughput precision genome editing to test the fitness effects of thousands of natural variants. Our findings challenge the long-held assumption that common variants are inconsequential.
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Massively parallel interrogation of the fitness of natural variants in ancient signaling pathways reveals pervasive local adaptation
The nature of standing genetic variation remains a central debate in population genetics, with differing perspectives on whether common variants are almost always neutral as suggested by neutral and n...
www.biorxiv.org
October 22, 2025 at 5:46 PM
One of the most exciting works of my career, years in the making. We used high-throughput precision genome editing to test the fitness effects of thousands of natural variants. Our findings challenge the long-held assumption that common variants are inconsequential.
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Cheyenne Payne
Congratulations to @jeffgroh.bsky.social on the publication of his paper on an ancient balanced polymorphisms controlling heterodichogamy in two genera of wingnuts. The paper shows the putative turnover & reversal of dominance of a mating type polymorphism
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Distinct haplotypes and reversed dominance at a single-gene balanced polymorphism controlling heterodichogamy in two genera of wingnuts
In the angiosperm mating system of heterodichogamy, two hermaphroditic morphs temporally alternate between male and female flowering phases, promoting…
www.sciencedirect.com
October 16, 2025 at 3:42 PM
Congratulations to @jeffgroh.bsky.social on the publication of his paper on an ancient balanced polymorphisms controlling heterodichogamy in two genera of wingnuts. The paper shows the putative turnover & reversal of dominance of a mating type polymorphism
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Cheyenne Payne
One of the most challenging aspects of the climate crisis is that it becomes harder to solve as it proceeds, both in terms of mitigation and adaptation. It isn't something that can be put off until tomorrow without serious penalty.
The wet tropical rainforests of Queensland are now a carbon source because CO₂ emitted from trees dying and decaying outstripped the CO₂ taken up by trees growing. 😕
Australia's tropical trees emit more carbon than they absorb: study
Climate change is killing trees faster than they can be replaced leading to greater carbon emissions, according to a new study.
www.abc.net.au
October 15, 2025 at 8:51 PM
One of the most challenging aspects of the climate crisis is that it becomes harder to solve as it proceeds, both in terms of mitigation and adaptation. It isn't something that can be put off until tomorrow without serious penalty.
Reposted by Cheyenne Payne
Very excited to share that our work assessing the genomic diversity of snow leopards has come out today in PNAS! Spoiler alert - they have the lowest genetic diversity of all big cats!
www.pnas.org/doi/10.1073/...
news.stanford.edu/stories/2025...
@petrovadmitri.bsky.social @elliecat.bsky.social
www.pnas.org/doi/10.1073/...
news.stanford.edu/stories/2025...
@petrovadmitri.bsky.social @elliecat.bsky.social
Exceedingly low genetic diversity in snow leopards due to persistently small population size | PNAS
Snow leopards (Panthera uncia) serve as an umbrella species whose conservation benefits
their high-elevation Asian habitat. Their numbers are belie...
www.pnas.org
October 7, 2025 at 9:10 PM
Very excited to share that our work assessing the genomic diversity of snow leopards has come out today in PNAS! Spoiler alert - they have the lowest genetic diversity of all big cats!
www.pnas.org/doi/10.1073/...
news.stanford.edu/stories/2025...
@petrovadmitri.bsky.social @elliecat.bsky.social
www.pnas.org/doi/10.1073/...
news.stanford.edu/stories/2025...
@petrovadmitri.bsky.social @elliecat.bsky.social
Reposted by Cheyenne Payne
New — with @joannarifkin.bsky.social, @jotlovell.bsky.social, @spicybotrytis.bsky.social, and many more — we created seven new high-quality genomes and explored pangenomic variation in the emerging oilseed crop pennycress (Thlaspi arvense). 1/
Structure and sequence evolution in the pennycress (Thlaspi arvense) pangenome
Summary · Eukaryotic genomes harbor many forms of variation, including nucleotide diversity and structural polymorphisms, which experience natural selection and contribute to genome evolution and biod...
www.biorxiv.org
September 28, 2025 at 5:25 PM
New — with @joannarifkin.bsky.social, @jotlovell.bsky.social, @spicybotrytis.bsky.social, and many more — we created seven new high-quality genomes and explored pangenomic variation in the emerging oilseed crop pennycress (Thlaspi arvense). 1/
Reposted by Cheyenne Payne
We're on a roll: Super proud of this paper lead by Dr. Megan Frayer & GS Hagar Soliman (with a major contrib from GS Pia Schwarz): Introgression and Parental Conflict Shape Repeated Occurrences of Postzygotic Isolation @hybridzones.bsky.social @hagarsoliman.bsky.social @pfschwarz.bsky.social
September 25, 2025 at 9:29 PM
We're on a roll: Super proud of this paper lead by Dr. Megan Frayer & GS Hagar Soliman (with a major contrib from GS Pia Schwarz): Introgression and Parental Conflict Shape Repeated Occurrences of Postzygotic Isolation @hybridzones.bsky.social @hagarsoliman.bsky.social @pfschwarz.bsky.social
Reposted by Cheyenne Payne
I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
September 24, 2025 at 8:30 PM
I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)