Juliana Rodríguez-Fuentes

@julianaxrf.bsky.social

PhD student at University of Bern | Studying the phenotypic effects of chromosomal inversions 🐟 | she/her | COL ⛰️

Renowned Evolutionary biologists Peter & Rosemary Grant are back with new research on adaptive radiation in Geospiza finches on Daphne Major, looking at the long term impacts of hybridization on 3 species of ground finch! You can read the full paper below 👇 🧪 (1/2) doi.org/10.1093/evol...

Fission, fusion and the generation of novelty in Geospiza species on Daphne Major Island, Galápagos

Abstract. Early stages in the adaptive radiation of Darwin’s finches are characterized by divergence (fission) and convergence (fusion) caused by natural s

doi.org

🐟 🎉 Research opportunity alert! 🚨 🐟 A fully funded 2-year Master’s by Research (MSc) is available on the “Stability of European freshwater fish communities under multiple environmental changes” with myself and Prof. Ian Donohue. Please apply or share!

BildBild

#NewPaperAlert! This one has a massive author list and has been a LONG time in coming, but is SO COOL! First, check out the first figure to get you interested! Manakins! Fruit! Sexual-selection in action (displays and Z:A chromosomal diversity)! Read on for the back story & link 1/n

above: montage of brightly coloured tropical birds, some in interesting display postures, some eating fruit
below: a phylogeny that includes those same taxa (and others) and a plot of the ratio of genetic diversity on the autosomes relative to the Z chromosomes

Researchers have identified superparamagnetic macrophages in the livers of rock pigeons to be crucial for magnetic sensing. The finding uncovers an unexpected role for immune cells in sensory perception and may fundamentally change our understanding of animal navigation. https://scim.ag/4nTQ3nq

How animals sense Earth’s magnetic field is one of biology’s enduring mysteries. Researchers have now identified superparamagnetic macrophages in the livers of rock pigeons (Columba livia) to be crucial for magnetic sensing. The finding uncovers an unexpected role for immune cells in sensory perception and may fundamentally change our understanding of animal navigation.

Photo: Andreas Teichmann/laif/Redux

📣 2026 winner of the JMS Prize: ⭐ Wendy Valencia-Montoya 🐝🌼 "...a tiny insect pollinator must find its rare host plant. How do they find each other? What signals and sensory systems allow them to communicate? And once they meet, how do insects survive feeding on plants packed with neurotoxins..."

Bild

Check out our newest preprint! 📝 We find that adaptation on coevolutionary fitness landscapes is highly repeatable, but landscape-specific, and intergenomic epistasis creates coevolutionary fitness load for interacting species due to frequent fitness trade-offs 🏋️

bioRxiv Evolutionary Biology@biorxiv-evobio.bsky.social · 4mo ago

Repeatability of adaptation in interacting species https://www.biorxiv.org/content/10.64898/2026.04.01.715933v1