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Samridhi Chaturvedi

@samridhi

Evolutionary genomics 🧬, Molecular ecology, πŸ¦‹πŸ¦‹πŸ¦‹ biology, Assistant Professor, EEB, Tulane University https://chaturvedi-lab.wp.tulane.edu/

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21.09.2023
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Latest posts by Samridhi Chaturvedi @samridhi

Say hi to old main for me :)

05.03.2026 23:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

woah!! Congratulations Tanner!!

05.03.2026 22:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Congrats!!! you’re a rockstar and this is super cool ❀️

05.03.2026 22:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Our paper is out in @Science! The Atlantic silverside spans Earth's steepest latitudinal gradient in coastal sea-surface temperature. Despite high gene flow, populations show clinal genetic variation in multiple locally adapted traits. doi.org/10.1126/scie...

05.03.2026 19:05 πŸ‘ 48 πŸ” 20 πŸ’¬ 6 πŸ“Œ 1
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Convergent evolution of hexenal isomerases in Lepidoptera and plants - Nature Ecology & Evolution Phylogenetic and functional analyses across 34 Lepidoptera and 183 plant species show that hexenal isomerases found in Lepidoptera exhibit functional convergence with those found in plants despite hav...

Phylogenetic and functional analyses across 34 Lepidoptera and 183 plant species show that hexenal isomerases found in Lepidoptera exhibit functional convergence with those found in plants despite having evolved independently from unrelated enzyme families πŸ§ͺ www.nature.com/articles/s41...

03.03.2026 16:42 πŸ‘ 19 πŸ” 13 πŸ’¬ 0 πŸ“Œ 1

It was our pleasure to host Andrew and listen about the #worldsgreatestecoevoexperiment

02.03.2026 13:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Parallel evolution of industrial melanism in the peppered moth: one locus, many alleles https://www.biorxiv.org/content/10.64898/2026.02.26.707722v1

27.02.2026 05:31 πŸ‘ 16 πŸ” 9 πŸ’¬ 0 πŸ“Œ 3
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Evolution, genomicsΒ and conservation of butterflies and moths - Nature Reviews Biodiversity Butterflies and moths are key indicators of functioning and healthy ecosystems around the world. This Review describes the evolutionary history of the order Lepidoptera and tracks shifts in researcher...

Now online! In this review, we cover four major topics on butterflies and moths: their evolutionary history and diversification dynamics, genomics, global diversity patterns, and conservation πŸ¦‹πŸŒ (1/8) @natrevbiodiv.nature.com
www.nature.com/articles/s44...

24.02.2026 16:19 πŸ‘ 83 πŸ” 44 πŸ’¬ 2 πŸ“Œ 0
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We’re excited to announce @tarnopol.bsky.social as the recipient of the 2026 Larry Sandler Award! πŸŽ‰ She’ll present the Larry Sandler Memorial Lecture during the #Dros26 opening session on March 4β€”she'll share how her research explores how protein toxins evolve to shape host–parasite interactions.

19.02.2026 17:01 πŸ‘ 23 πŸ” 10 πŸ’¬ 1 πŸ“Œ 1
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Recent work using hybrid zones in Juniper species show diverse ancestry and increased chemical diversity. Hybrids also occupy intermediate environments and produce unique phytochemicals. This genetic and chemical variation impacts ecology and adaptation.
Photo: Kevin Stanchfield
1/2

19.02.2026 14:25 πŸ‘ 7 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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Happy Mardi Gras from this beautiful float of butterflies and metamorphosis! it’s truly a work of art. #mardigras2026

18.02.2026 02:53 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Assessing Ancient DNA Sampling Strategies for Natural Selection Inference in Humans Using Allele Frequency Time Series Data Abstract. The increased availability of genomic data from ancient humans allows estimating the strength of natural selection at a given locus using time se

Interested in using aDNA time-series datasets to estimate selection?

Our study "Assessing Ancient DNA Sampling Strategies for Natural Selection Inference in Humans Using Allele Frequency Time Series Data" is now out in GBE! doi.org/10.1093/gbe/... @genomebiolevol.bsky.social @cegamorim.bsky.social

03.02.2026 09:17 πŸ‘ 53 πŸ” 24 πŸ’¬ 2 πŸ“Œ 1

Ancient human genomes from Ladakh reveal Tibetan, South Asian, and Central Asian admixture over the last three millennia https://www.biorxiv.org/content/10.64898/2026.01.26.701789v1

28.01.2026 13:31 πŸ‘ 2 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1

So cool!!

28.01.2026 00:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

That day is tomorrow for me - chapatis and tomato potato gravy!!

23.01.2026 02:51 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
The American Naturalist classic cover

The American Naturalist classic cover

Special Feature: Can we predict the future of evolution? In this review, Jackson et al. dig into genomic analyses of change over time to determine if and when evolution can be forecast using genomic methods.

Read now ahead of print!
www.journals.uchicago.edu/doi/10.1086/...

21.01.2026 03:46 πŸ‘ 12 πŸ” 8 πŸ’¬ 0 πŸ“Œ 0
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The green lacewing venom system and the complex mechanisms underlying its evolution Abstract. Venom has independently evolved across many lineages, yet relatively few have been studied in detail, particularly among insects. Of these, Neuro

@mariusmaur.bsky.social et al. investigate the venom system in Neuroptera by integrating genomics, transcriptomics and functional assays, showing that their toxin arsenal is the result of a multitude of genomic and evolutionary mechanisms.

πŸ”— doi.org/10.1093/molbev/msaf326

#evobio #molbio

05.01.2026 15:18 πŸ‘ 7 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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A north-south hemispheric migratory divide in the butterfly Vanessa cardui - Nature Communications Here authors find a latitudinal migratory divide in a butterfly across Earth’s hemispheres, highlighting how hemisphere-specific seasonality and navigational cues shape migratory strategies. They find...

Super cool new study from Talavera lab on migratory divide between painted lady (Vanessa cardui) populations north of the equator and south of the equator! They find a candidate gene that might be associated with the differenc ein behaviour.
www.nature.com/articles/s41...

02.01.2026 09:46 πŸ‘ 18 πŸ” 8 πŸ’¬ 2 πŸ“Œ 1
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Pangenomes: new tools for ecological and evolutionary genomics Genomic structural variation is an important component of genetic variation in natural populations. By assembling and analyzing multiple high-quality genomes within a species or clade, pangenomes capt...

www.cell.com/trends/ecolo...

26.12.2025 15:01 πŸ‘ 60 πŸ” 20 πŸ’¬ 0 πŸ“Œ 1
An image of a recruitment advertisement for a MS position at New Mexico Tech

An image of a recruitment advertisement for a MS position at New Mexico Tech

I am recruiting a MS student in Biology at New Mexico Tech with an anticipated start date of Fall 2026 to work on the applied evolutionary genetics of wild populations with conservation or management concerns (butterflies, bighorn sheep). Please see the attached advertisement for more info.

22.12.2025 18:58 πŸ‘ 14 πŸ” 14 πŸ’¬ 0 πŸ“Œ 0
Screenshot of Fig 2A from the linked paper, plotting mean Β±SE of residual bill length by tarsus length for UCLA juncos by their hatch year in comparison to the same measure for nearby natural-area juncos; before and after the COVID anthropause the UCLA juncos have bills much shorter than the natural-areas juncos, but during 2020 and 2021 the UCLA junco bill lengths spike upwards to be comparable to the natural-areas juncos

Screenshot of Fig 2A from the linked paper, plotting mean Β±SE of residual bill length by tarsus length for UCLA juncos by their hatch year in comparison to the same measure for nearby natural-area juncos; before and after the COVID anthropause the UCLA juncos have bills much shorter than the natural-areas juncos, but during 2020 and 2021 the UCLA junco bill lengths spike upwards to be comparable to the natural-areas juncos

Dark-eyed juncos living in urbanized Los Angeles have shorter bills than juncos in nearby natural areasβ€”Β but while UCLA was closed for COVID-19 safety, campus juncos evolved longer bills again πŸͺΆπŸŒΏ

buff.ly/BOOinne

17.12.2025 15:12 πŸ‘ 13 πŸ” 4 πŸ’¬ 3 πŸ“Œ 0
Book cover for Reproducible Code guide. The cover has a red background with a large yellow-bodied black-headed stag beetle.

Book cover for Reproducible Code guide. The cover has a red background with a large yellow-bodied black-headed stag beetle.

Excited to launch the new improved Reproducible Code guide from @britishecologicalsociety.org @methodsinecoevol.bsky.social FREE online here! www.britishecologicalsociety.org//wp-content/... Amazing work by some very talented ECRs. We hope it’s useful!

16.12.2025 15:03 πŸ‘ 315 πŸ” 198 πŸ’¬ 6 πŸ“Œ 9

So cool!

11.12.2025 19:29 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Butterfly populations across the U.S. are in alarming decline, a Science study finds, with total abundance falling by 22% in just 20 years.

Such widespread losses emphasize the urgent need for conservation action. https://scim.ag/4ombGv3 #WildlifeConservationDay

04.12.2025 17:38 πŸ‘ 48 πŸ” 20 πŸ’¬ 2 πŸ“Œ 2
a person is leaning over a scanner of some kind under bright lights around her to put something tiny on the glass in a room lined with shelves full of shallow wooden drawers

a person is leaning over a scanner of some kind under bright lights around her to put something tiny on the glass in a room lined with shelves full of shallow wooden drawers

two tiny butterfly specimens, one blue and one white with spots, are mounted above a ruler and several cards with species names and collection location

two tiny butterfly specimens, one blue and one white with spots, are mounted above a ruler and several cards with species names and collection location

Alia Donly, a Utah State University student, traveled here to the McGuire Center to image and DNA sample all of our specimens of the Sand Mountain Blue butterfly (Euphilotes pallescens arenamontana) that lives on a single dune system in Nevada.

Read more:
www.floridamuseum.ufl.edu/mcguire/news...

04.12.2025 15:24 πŸ‘ 12 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

Super happy to share the *first* lab publication. Out today in Molecular Ecology - a review of methods used to identify repeated adaptation using genomic data (1)

Molecular Ecology | Molecular Genetics Journal | Wiley Online Library onlinelibrary.wiley.com/doi/10.1111/...

22.11.2025 17:53 πŸ‘ 17 πŸ” 6 πŸ’¬ 1 πŸ“Œ 0
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Project Psyche: reference genomes for all Lepidoptera in Europe Project Psyche is a transnational initiative to generate and study chromosome-level reference genomes of all ~11 000 species of Lepidoptera (butterflies and moths) found in Europe. Here, we describe t...

(1/5)Thrilled to announce our paper on #ProjectPsyche is out! πŸ¦‹We describe how we’ve generated 1000+ high-quality genomes for European Lepidoptera, providing an unprecedented resource for biodiversity, conservation, and evolutionary research.
#Genomics #Biodiversity
www.cell.com/trends/ecolo...

27.11.2025 13:22 πŸ‘ 58 πŸ” 24 πŸ’¬ 3 πŸ“Œ 2
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India’s agroecology programme, β€˜Zero Budget Natural Farming’, delivers biodiversity and economic benefits without lowering yields - Nature Ecology & Evolution Analysis of crop yields, farmer income and bird species abundances identifies multiple positive outcomes of a large-scale Indian government-incentivized agroecology initiative.

Analysis of crop yields, farmer income and bird species abundances identifies multiple positive outcomes of a large-scale Indian government-incentivized agroecology initiative. πŸ§ͺ

www.nature.com/articles/s41...

19.09.2025 13:56 πŸ‘ 6 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1

This was a massive effort, and I'm glad to have two rising Indian women researchers leading the charge with me - my grad students @vineesha.bsky.social and Garima (not on the sky). Please give it a read and let us know your thoughts! Fin.

22.11.2025 17:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

We identify potential issues with genomic data and statistical methods that can bias gene reuse identification and propose solutions to fix these issues. We also provide a simple framework for designing studies and testing hypotheses related to repeated adaptation (2).

22.11.2025 17:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0