julianaxrf.bsky.social
Juliana Rodríguez-Fuentes
@julianaxrf.bsky.social
180 followers 510 following 8 posts
PhD student at University of Bern | Studying the phenotypic effects of chromosomal inversions 🐟 | she/her | COL ⛰️
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
Really excited to share my first PhD paper about fitness effects of chromosomal inversions!

Using an experimental approach we explored if inversions involved in ecotype divergence in threespine stickleback affect fitness-proxies 1/🧵

www.nature.com/articles/s41...
@heredityjournal.bsky.social
Experimental test of the fitness effects of divergent marine–freshwater chromosomal inversions in stickleback under different salinity conditions - Heredity
Heredity - Experimental test of the fitness effects of divergent marine–freshwater chromosomal inversions in stickleback under different salinity conditions
www.nature.com
1 10 20
Reposted by Juliana Rodríguez-Fuentes
pseudacris.bsky.social
Josef Uyeda @pseudacris.bsky.social · 6d
Master's degree position at Towson University with Daniel Caetano on macroevolutionary and phylogenetic comparative methods! Daniel is an awesome human and a great mentor, share with your students!
caetanods.weebly.com/join-the-lab...
Join the lab
The Caetano lab at Towson University (Maryland, USA) is seeking a Master's degree student to start in Fall 2026. A Research Assistant (RA) position is available to the student during part (or all) of....
caetanods.weebly.com
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Reposted by Juliana Rodríguez-Fuentes
mpi-ce.bsky.social
Max Planck Institute for Chemical Ecology @mpi-ce.bsky.social · 12d
New study in @science.org reveals why some animals display striking colors to warn predators while others use camouflage. Our former group leader @hannahmrowland.bsky.social, now @livuni-ives.bsky.social was part of the global project on the evolution of animal colors. www.ice.mpg.de/511966/PR_Me...
Warning colour or camouflage: Why some animals shine bright and others disappear in plain sight
A global study explores why some animals use bright warning colors while others rely on camouflage for predator evasion. Findings reveal that predator competition and habitat influence these strategie...
www.ice.mpg.de
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Reposted by Juliana Rodríguez-Fuentes
gcscicom.bsky.social
Graduiertenzentrum der CAU @gcscicom.bsky.social · 14d
Why are kids not half copies of their parents? How does our DNA control our fertility? Rajalekshmi Narayana Sarma from the @uni-kiel.de answers these and other exciting questions in her talk on 26.09 at 18:00 in the Pumpe.
Free admission
@mpi-evolbio.bsky.social
#ScienceDay
#KielRegion
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Reposted by Juliana Rodríguez-Fuentes
kyle-horton.bsky.social
Kyle Horton @kyle-horton.bsky.social · 14d
Truly impressive number of birds migrating tonight. More than 800 MILLION birds up in the air right now❗ #BirdMigration
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Reposted by Juliana Rodríguez-Fuentes
olivia.science
Olivia Guest · Ολίβια Γκεστ @olivia.science · 15d
"But it exposed how the system works: extract specialist knowledge at low cost and mostly without giving credit, repackage it into global claims and call it collaboration. I declined." @darmenteras.bsky.social

www.nature.com/articles/d41...
Equity in science is a beautiful lie — and I’m done pretending
Science isn’t really moving towards equity; institutions are just perfecting the appearance of equity. We need to build an alternative system.
www.nature.com
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Reposted by Juliana Rodríguez-Fuentes
vertebrategenomes.bsky.social
Vertebrate Genomes Project @vertebrategenomes.bsky.social · Aug 22
🪽 We are excited to announce an annotated genome assembly for the hoatzin (Opisthocomus hoazin), found in swamps, riparian forests, and mangroves of the Amazon and the Orinoco basins in South America. Special thanks to our collaborator Andrew Crawford! (1/3)
from David Cook Wildlife Photography via iNaturalist (CC BY-NC) from Ben Zerante via iNaturalist (CC BY-NC-ND)
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Reposted by Juliana Rodríguez-Fuentes
pjvphotography.bsky.social
Patrick Vallely @pjvphotography.bsky.social · Aug 28
"Pat, why do you carry that ridiculous 600mm lens on long hikes?"

Buddy, I can see mountains reflected in the eyes of a trailside pika.
A pika sits on a mossy rock. Tighter crop of the same pika, focusing on its head. An even tighter crop, focusing more on the pika's eye. An extremely tight crop of the pika's eye, emphasizing their reflection of an early morning mountain scene.
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Reposted by Juliana Rodríguez-Fuentes
kimholzmann.bsky.social
Kim L. Holzmann @kimholzmann.bsky.social · Aug 26
You're attending #gfoe2025? Want to hear what animals do when the tropical rainforest is suddenly freezing? 🥶 I will talk about this on Monday afternoon
@ecoresearchzoo3.bsky.social @biologie-uniwue.bsky.social
@gfoesoc.bsky.social
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 20
The FOMO is strong but super happy to follow online the awesome work from friends 🥹
yagmurerten.bsky.social
E. Yağmur Erten @yagmurerten.bsky.social · Aug 19
MEME alumni (www.evobio.eu) at #ESEB2025! We span so many generations now, from the first cohort (graduated in 2012) to those who are still studying, with master students, PhD students, postdocs, and PIs among us! So happy to get together in every ESEB 🤩
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
This study nicely highlights the need of experimental approaches to test for associations found in genomic studies 🐟

Stay tuned for our exploration on ecological relevant traits of these inversions!
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
Moreover, there were no strong effect of inversion genotype across salinity treatments in body size, suggesting that salinity alone might not be the selective force acting on them and the need to explore further aspects of stickleback biology 5/
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
Across the three inversions, genotype frequencies follow a Mendelian ratio suggesting that there are no lethal effects when inversions are in homozygous state. 4/
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
Given their association with marine-freshwater divergence, we hypothesized that saltwater could be a potential selective force acting on these inversions. Thus, our crosses were grown in freshwater and saltwater 3/
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
Three inversions have been associated with marine-freshwater divergence in this system but little is known about their effects. So, we decided on assesing survival and body size using experimental crosses 2/
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · Aug 5
Really excited to share my first PhD paper about fitness effects of chromosomal inversions!

Using an experimental approach we explored if inversions involved in ecotype divergence in threespine stickleback affect fitness-proxies 1/🧵

www.nature.com/articles/s41...
@heredityjournal.bsky.social
Experimental test of the fitness effects of divergent marine–freshwater chromosomal inversions in stickleback under different salinity conditions - Heredity
Heredity - Experimental test of the fitness effects of divergent marine–freshwater chromosomal inversions in stickleback under different salinity conditions
www.nature.com
1 10 20
Reposted by Juliana Rodríguez-Fuentes
davetoews.bsky.social
David Toews @davetoews.bsky.social · May 23
Congrats to Dr. Dave Lutgen at U Bern for a damn fine dissertation defense today! Keep an eye out for some quality wheatear genomics in the near future, avec Reto Burri and Katie Peichel et al.
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Reposted by Juliana Rodríguez-Fuentes
evobiocc.bsky.social
EvoBio Crash Course @evobiocc.bsky.social · Jun 4
Hello Everyone!

We are back for the 2025 edition of the #EvoBioCC 🥳💚✨

Register to our free online course on Evolutionary Biology, focused on supporting the dreams of Global South students hoping to build their careers in the field! Here is the link:

docs.google.com/forms/d/e/1F...
EvoBio Crash Course 2025 | Registration Form
The fourth edition of the EvoBio Crash Course has opened registration and we are very happy to have you! We are focusing on delivering a rich course on the basics of evolutionary biology so that stude...
docs.google.com
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Reposted by Juliana Rodríguez-Fuentes
evobiocc.bsky.social
EvoBio Crash Course @evobiocc.bsky.social · Jun 4
Please share widely!
We are offering the 4th iteration of our free & online crash course in Evolutionary Biology, catered to students in the Global South! Join us this summer for an incredible line of up classes & tutorials from amazing graduate student researchers, covering a vast array of topics!
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Reposted by Juliana Rodríguez-Fuentes
science.org
Science Magazine @science.org · Jun 2
Researchers in #ScienceAdvances have uncovered a previously unknown genetic branch of ancient hunter-gatherers local to the Colombian land bridge.

Learn more: scim.ag/4mEsGNL
A 6000-year-long genomic transect from the Bogotá Altiplano reveals multiple genetic shifts in the demographic history of Colombia
The hunter-gatherer gene pool of the Bogotá Altiplano was replaced by Central American ancestry at least 2000 years ago.
scim.ag
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Reposted by Juliana Rodríguez-Fuentes
amcuervo.bsky.social
Andrés Cuervo @amcuervo.bsky.social · May 21
⚠️Highly recommended🐤
Laura Céspedes on her research about the crazy speciation history of Andean Myioborus 🧬
@theaga.bsky.social
blog.theaga.org/eecg-embarka... #birds #andes #genomes #hybridzones
EECG Embarkation: Studying the interplay of selection and recombination shaping the genomes of warbler hybrids – AGA Blog
blog.theaga.org
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Reposted by Juliana Rodríguez-Fuentes
jrossibarra.bsky.social
Jeffrey Ross-Ibarra @jrossibarra.bsky.social · May 8
Now out in print! Elli Cryan (coadvised by @spicybotrytis.bsky.social) digs deep into the sgtructure and function of hybrid incompatibility loci in maize. Among other things she discovers a conserved, ancient pseudogene haplotype that silences the locus in trans! academic.oup.com/genetics/adv...
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Reposted by Juliana Rodríguez-Fuentes
dickmerrill.bsky.social
Richard Merrill @dickmerrill.bsky.social · May 6
Interested in a PhD connecting sensory ecology and evolutionary genetics? Applications are now open for a project on the Speciation Genomics of Eye Size Variation in Heliconius Butterflies in our lab at LMU Munich: www.evol.bio.lmu.de/research/mer... Please repost!
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Reposted by Juliana Rodríguez-Fuentes
ben-moran.bsky.social
Ben Moran @ben-moran.bsky.social · May 1
1/9 Excited to share the preprint for the second half of my PhD with @mollyschumer.bsky.social: Connecting human environmental impacts to hybridization in swordtail fish through genomics, GIS, water chemistry, and histology. Thread below!

#SciSky

www.biorxiv.org/content/10.1...
Increased rates of hybridization in swordtail fish are associated with water pollution
Biodiversity loss can occur when disturbance compromises the reproductive barriers between species, causing them to collapse into a single population through hybridization. Recent research has documen...
www.biorxiv.org
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julianaxrf.bsky.social
Juliana Rodríguez-Fuentes @julianaxrf.bsky.social · May 2
Hermoso 🥹
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Reposted by Juliana Rodríguez-Fuentes
jjlagosoviedo.bsky.social
Juan J. Lagos-Oviedo @jjlagosoviedo.bsky.social · May 1
A cool part of expending hours quietly in front of a bivouac is that one experiences non-common encounters. Here there is a Rufous-vented ground cuckoo who is one of the many army ants followers.
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