Yuki Haba

@yukihaba.bsky.social

Evolution, genomics, neuroethology - from mosquitoes to mole-rats | Leon Levy Scholar at Columbia Zuckerman Institute / Abdus-Saboor lab | PhD at Princeton McBride lab | Tokyo native, 麻布高/東大 alum 🇯🇵 yukihaba.github.io

How do transposons jump when they’re released from host control? I babysat two chromosomes for 2 years, making sure they are ok without most piRNAs. Here’s what we found & excited to share my 1st postdoc paper: “piRNA loss unleashes episodic transposition bursts” www.biorxiv.org/content/10.6...

piRNA loss unleashes episodic transposition bursts

In Metazoa, transposon expression is suppressed by the piRNA pathway, and disruption of this pathway leads to rampant transposon expression. However, it remains unclear whether increased transposon ex...

biorxiv.org

I am excited to tell you about our new study led by Tyler Audet and in collaboration with Stefan Lüpold's group. Below you see two species. On the right is Drosophila melanogaster. On the left, Drosophila prolongata. Notice the highly exaggerated legs of the males in D.p! doi.org/10.1093/evol...

Two panel image of Drosophila prolongata and Drosophila melanogaster. In the top panel is a female of Drosophila prolongata on the left and a female of Drosophila melanogaster on the right. It shows that D. prolongata females are somewhat larger than melanogaster, and have spotted wings. Importantly the legs are proportional in each species.

In the bottom panel are males. On the left is a Drosophila prolongata male which is larger than all the other individuals, and has highly exaggerated legs in terms of width and length, and also has black stripes. In contrast male Drosophila melanogaster are much smaller than all the others, with normally proportioned legs.

So excited to announce that I will be starting the Chen Lab at EMBL Rome in September 2026 🎉 ! The Chen Lab will investigate the genetics + evolution of innate behavior w/ high-throughput sequencing + computational methods across diverse rodent species. Stay tuned for upcoming opportunities...

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Do you know an outstanding aquarist? We're hiring a Senior Aquarist to help run our cephalopod facility at Columbia University. Our team maintains a colony of 250+ cuttlefish, develops new husbandry techniques (inc transgenics) & studies cuttlefish camouflage and social behavior. 1/3 [Pls repost!]

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

Thrilled to present my dissertation research at the Hamilton Symposium! We used approaches including GWAS, long-read sequencing, phylogenetic methods, and behavior experiments to uncover the genetic basis and evolutionary history of a shared polymorphism. Can’t wait to share what we’ve learned!

Picture of three diverged Xiphophorus species that display the false gravid spot, a sexual mimicry polymorphism that allows males to mimic females.
Society for the Study of Evolution@sse-evolution.bsky.social · 3mo ago

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).

Happy to highlight new findings by Vanesa Getseva and Lin Poyraz about the sources of variation in germline mutation rates among humans: www.biorxiv.org/content/10.6... Joint work with Anastasia Stolyarova and @ipsitaagarwal.bsky.social. 1/n

A sibling study of variation in parental mutation rates

People are born with variable numbers of de novo germline mutations (DNMs), depending primarily on the ages of their parents. To explore additional causes, we developed an approach to call DNMs from nucleotide differences between siblings in genomic regions inherited identical by descent from both parents. Applying it to whole genome sequences from 28,985 sibling pairs of diverse genetic ancestries present in the UK Biobank and All of Us datasets, as well as 2,330 trios, we identified >800K autosomal DNMs and characterized mutation phenotypes in 27,645 sets of parents. We found subtle shifts in the mutation spectrum but no differences in total DNM rates among genetic ancestry groups, or between smokers and non-smokers. Testing for associations between parental mutation phenotypes and their burden of loss-of-function and deleterious missense variants in a set of 180 DNA repair and maintenance genes, we discovered that disruptions in REV1 and LIG1 increase germline mutation rates, and thus that rare mutator alleles segregate in population cohorts. ### Competing Interest Statement The authors have declared no competing interest. NIH, R35 GM083098

biorxiv.org