Julien Devilliers

@juliendevilliers.bsky.social

Postdoc Virginia Tech / sensory system 🦟 / molecular biology / entomology / phylogenomics / colour pattern / mimicry / vision / polarised light 🦋🇨🇵🇬🇧🇺🇲🇨🇭 https://juliendevi.github.io/

🧵 New paper! We’re excited to release OPTICS: software that immediately predicts color sensitivity from any opsin protein sequence. In other words: give OPTICS any opsin sequence, and it predicts the wavelength of light the pigment is most sensitive to 🌈👁️ academic.oup.com/mbe/advance-...

Accessible and Robust Machine Learning Approaches to Improve the Opsin Genotype-Phenotype Map

Abstract. Predicting phenotypes from genetic variation is a central challenge in biology. Here, machine learning (ML) offers great promise, but its use is

academic.oup.com

Invasive insects don’t find hosts by chance: They rely on specialized chemical sensing systems. By decoding the genome & gene activity of the woodwasp Sirex noctilio, researchers uncovered how this forest pest may detect pine hosts, mates & egg-laying sites. #LIBresearch © Postma et al. CC BY 1/3

Two PCA plots with points in various colors and shapes representing life stage, sex, and body part of Sirex noctilio, accompanied by illustrations of a female and male insect in different colors.

Check it out! Daily fluctuations of human smell, with behavioural and molecular synchronisation of mosquitoes smell and attraction! And icing on the cake a new timeless mutant line...

Clement Vinauger@thevinaugerlab.bsky.social · 7mo ago

Check out this new preprint from the lab: www.biorxiv.org/content/10.6... Lan Lou, @juliendevilliers.bsky.social, @karthikeyanc.bsky.social, @lahonderelab.bsky.social, the Tu Lab, and @joshuabenoit.bsky.social show that mosquito olfactory rhythms are synced with daily rhythms in how we smell.

Check out this new preprint from the lab: www.biorxiv.org/content/10.6... Lan Lou, @juliendevilliers.bsky.social, @karthikeyanc.bsky.social, @lahonderelab.bsky.social, the Tu Lab, and @joshuabenoit.bsky.social show that mosquito olfactory rhythms are synced with daily rhythms in how we smell.

Temporal synchrony between human odor rhythms and mosquito olfactory preference shapes host attraction

For anthropophilic mosquitoes such as Aedes aegypti, aligning host-seeking with human availability enhances foraging efficiency and reproductive success. Although time of day modulates mosquito activity and olfactory sensitivity, it remains unknown whether human hosts display rhythmic changes in odor cues and whether mosquitoes adjust their sensory responses accordingly. Here, we combine chemical, behavioral, genetic, and transcriptomic approaches to reveal that both mosquitoes and their human hosts in this interaction are temporally synchronized. Gas chromatography-mass spectrometry showed systematic daily shifts in human body odor composition between morning and evening. Correspondingly, mosquitoes prefer host odors that match their own active phase, a time-specific preference abolished in timeless mutants and under constant darkness. Silencing the timeless gene further induced an aversion for the host scent under light-dark conditions. Transcriptomic analysis of mosquito heads and antennae uncovered rhythmic expression of sensory and neuromodulatory genes, driven by both circadian and light-dark cycles and which peaks during mosquitoes' active periods, with rhythmic co-expression networks collapsing in timeless knockouts. Together, these results show that mosquito attraction to humans is temporally tuned by the interplay of host odor rhythms and mosquito sensory rhythms, revealing a previously unrecognized form of interspecific temporal synchronization in vector-host interactions. ### Competing Interest Statement The authors have declared no competing interest. National Institutes of Health, R01AI155785, R21AI166633, R01AI148551 National Institute of Food and Agriculture, VA-160212

biorxiv.org

Learn about using the VectorByte Databases, VecTraits and VecDyn, to answer cool questions! Save the date for the VectorByte training workshop at Virginia Tech, together with EEID, May 30-June 1, 2026!!

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Spiders that experience vibrations, visual stimuli, both or none during development do not differ strongly in the size of their brain areas. This is a surprising finding. Even more surprising is that siblings react alike. See our new publication in the J. comp. Neurology. doi.org/10.1002/cne.... 🧪🕷

We performed an experiment with two spider species, one web building and one cursorial species. Juveniles experienced vibrations or visual input or both or no stimuli. Their brain areas did not differ significantly. However, siblings reacted in a similar way.

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

Do you work (/want to work) with caterpillars? Or sensory systems? Or BOTH?! Well good golly do we have the paper for you! We explain the senses that caterpillars have, what they use them for, and how anthropogenic sensory pollution might be messing it all up 🐛 doi.org/10.1007/s003...

The sensory ecology of caterpillars - Journal of Comparative Physiology A

Caterpillars (larval Lepidoptera) are one of the most ecologically and evolutionarily significant taxa on Earth. As both feeders and food, they shape the dynamics of enumerate ecosystems on land. Key ...

doi.org

Excited to announce the final version of the Mosquito Cell Atlas is out now in @cellpress.bsky.social!! 🦟🩸 There is SO much left to find & investigate in this dataset (& the rich biology of the Aedes aegypti mosquito)! We hope this helps scientists in many fields! www.cell.com/cell/fulltex...

A single-nucleus transcriptomic atlas of the adult Aedes aegypti mosquito

A comprehensive single-nucleus RNA-seq atlas of >367,000 nuclei from male and female Aedes aegypti mosquitoes reveals sexual dimorphism in sensory systems and brain cell types and widespread co-expres...

cell.com