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Petr Nguyen

@petrnguyen.bsky.social
622 followers 995 following 24 posts

Chromosome biology, evolutionary genetics, sex chromosomes, holocentric chromosomes, meiosis, butterflies,...

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Andrew Mongue @ajmongue.bsky.social · 17/09/2026
What's going on here? Is that fungus? Noodles?? No, it's bagworm moth cases! In a new article led by co-advised student David Cheng, we describe two new species and a whole new subfamily of bagworm moths: Tenuipsychinae! academic.oup.com/isd/article-... Brief explainer below!
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Judith Mank @judithmank.bsky.social · 20/11/2025
Team fish - we need your help! We are trying to build a database of all the fish chromosome-scale genomes where sex chromosomes have been identified. Have you build one or some? Do you know someone who has? Can you post the link in the comments? Please spread the word and repost! Thank you!
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Andrew Mongue @ajmongue.bsky.social · 09/12/2025
Pre-print and weird repro thread time! I've posted here about scale insects a lot, but ~half of my research is on Lepidoptera. My lab is developing bagworm moths (Psychidae) as models for comparative genomics. You probably know them like you see in the pics below: caterpillars that make cases.
Two evergreen bagworms feedingOne abbot's bagworm hanging out
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Petr Nguyen @petrnguyen.bsky.social · 28/11/2025
Our whitepaper on #ProjectPsyche is online now in @cp-trendsecolevo.bsky.social! Psyche will generate reference genomes for all European butterflies. Just imagine what we’ll be able to learn from them. And if you can’t quite imagine it, have a look at the piece. :)
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Genome Biology and Evolution @genomebiolevol.bsky.social · 22/09/2025
Hospodářská, @petrnguyen.bsky.social et al. investigated genome size and karyotype in Polyommatus and Lysandra butterflies, rejecting polyploidy to confirm karyotypic diversification via chromosome fragmentation in Polyommatinae butterflies. 🔗 doi.org/10.1093/gbe/evaf157 #genome #evolution
GBE | Polyommatine Blue Butterflies Reveal Unexpected Integrity of the W Sex Chromosome Amid Extensive Chromosomal Fragmentation Linked to Telomere Restoration
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Project Psyche @projectpsyche.bsky.social · 13/09/2025
(1/6) 🦋 We are thrilled to announce the release of the 1,000th reference genome of Lepidoptera species found in Europe! This goal was reached with the release of Stenoptilia islandicus, also known as the mountain plume moth. Read the story below!👇🏽
Genome sequencing progress for Lepidoptera. 
Stacked bar charts represent the cumulative number of lepidopteran species with a reference genome per year. The colours represent the different levels of genome assembly quality, ranging from contig to chromosome-level. Numbers in brackets represent the range in numbers of species that have a given assembly level per year. Data derived from GoaT on 05.09.2025.
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EvolDir @evoldir.bsky.social · 25/08/2025
PhD position in Butterfly Conservation Genomics at the Czech Academy of Sciences. Applications due by Sept 12, 2025. Requires a Master's degree. Details: www.prf.jcu.cz/en. Apply: pavel.matos@entu.cas.cz. #phd
prf.jcu.cz
FoS - Přírodovědecká fakulta JU
FoS - Přírodovědecká fakulta JU
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Erik Postma @erikpostma.bsky.social · 22/08/2025
With #eseb2025 coming to a close, it is time to start making plans for 2026. Interested in the interface of evolution 🧬 and ecology 🌳? Come to our #ExE conference hosted by @uniexecec.bsky.social in beautiful #Cornwall. Leave your email address at tinyurl.com/EvolxEcol to join our mailing list!
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Toni Gabaldón @tonigabaldon.bsky.social · 20/08/2025
As expected, the scientific content of the meeting is being truly outstanding, we will have over 600 talks and over 1000 posters on display. Plenty to choose from and many opportunities for unexpected eye-opening discoveries for anyone. #eseb2025
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Toni Gabaldón @tonigabaldon.bsky.social · 17/08/2025
#eseb2025 has started. So many friends and colleagues around. This is amazing. Welcome everyone to Barcelona!
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Petr Nguyen @petrnguyen.bsky.social · 12/08/2025
Another paper on polyommatine blue butterflies just published in @genomebiolevol.bsky.social. Blues have high chromosome numbers associated with increased diversification and their karyotypes reveal strategies to maintain genomic integrity amidst profound karyotypic changes doi.org/10.1093/gbe/...
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Petr Nguyen @petrnguyen.bsky.social · 24/07/2025
Excited to share our new paper in #MolEcol on sex chromosome evolution in African killifish! 🐟 A great collaboration with @alexandrsember.bsky.social . We uncovered ≥4 sex chromosome turnovers across Nothobranchius spp. using cytogenetics & genomics. 👉 onlinelibrary.wiley.com/doi/10.1111/...
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Hélène Defendini @helenedef.bsky.social · 30/01/2025
New paper out now in #ProcB @royalsocietypublishing.org We explored how sex loss shapes gene expression patterns by comparing sexual & asexual aphid lineages 🧬🪲 🔑 #SexualAntagonism #Parthenogenesis #Asexuality #Transcriptomics #SexBiasedExpression #SexualDimorphism 🔗 doi.org/10.1098/rspb...
doi.org
The release of sexual conflict after sex loss is associated with evolutionary changes in gene expression | Proceedings of the Royal Society B: Biological Sciences
Sexual conflict can arise because males and females, while sharing most of their genome, can have different phenotypic optima. Sexually dimorphic gene expression may help reduce conflict, but the expr...
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Petr Nguyen @petrnguyen.bsky.social · 22/01/2025
Another grant application submitted. The toll of sleep deprivation near the finish line feels heavier and heavier as I get older. 🤦🥱
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Petr Nguyen @petrnguyen.bsky.social · 07/01/2025
Register for the International Workshop on Molecular Biology and Genetics of Lepidoptera! Let us meet on Crete! 😁
events.gwdg.de
The 12th international Workshop on molecular biology and genetics of the Lepidoptera
REGISTRATION NOW OPEN We are delighted to invite you to join us at the Orthodox Academy of Crete, set just outside the lovely Cretan village Kolymbari, for a stimulating and enriching event. With 150 ...
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Shen Tian 田申 @tianshenbio.bsky.social · 05/12/2024
Our miRNA story is now in @science.org ! We found a microRNA, not a protein, that finally solved a long-standing evolutionary mystery of wing coloration in butterflies and moths. (1/n) www.science.org/doi/10.1126/...
science.org
A microRNA is the effector gene of a classic evolutionary hotspot locus
In Lepidoptera (butterflies and moths), the genomic region around the gene cortex is a “hotspot” locus, repeatedly implicated in generating intraspecific melanic wing color polymorphisms across 100 mi...
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bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 03/12/2024
Sex-biased gene expression under sexually antagonistic and sex-limited selection www.biorxiv.org/content/10.1101/202…
biorxiv.org
Sex-biased gene expression under sexually antagonistic and sex-limited selection https://www.biorxiv.org/content/10.1101/2024.11.29.622017v1
Sex differences in gene expression are ubiquitous, evolve quickly, and are expected to underlie phen
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Jing @everyjing.bsky.social · 04/12/2024
2 New #PhD positions in my institution to study #biodiversity and interactions #ants and #beetles in the tropics!
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Petr Nguyen @petrnguyen.bsky.social · 30/11/2024
@odedrechavi.bsky.social is here! I am so relieved. 😆So hello new place in the sky!
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