Tessera

Eduardo Amorim

@cegamorim.bsky.social

Assistant Professor @ Arizona State University || School of Human Evolution and Social Change || Institute of Human Origins || Center for Evolution and Medicine|| March Mammal Madness @mmmletsgo.bsky.social || Amateur ceramist || #aDNA #PopGen

113 Posts767 Follower 557 Folgt

SMBE IDEA taskforce @smbe-idea.bsky.social · yesterday

📣 SMBE IDEA proposals are OPEN for 2027 📣 Here are some more details on our initiatives around inclusion, diversity, equity and access (IDEA), centred in molecular biology and evolution, and what we value in proposals... (More details on project proposals here: www.smbe.org/idea-initiat...)

IDEA Initiative Call for Proposals

2027 CALL FOR PROPOSALS SMBE, through the IDEA (Inclusion, Diversity, Equity and Access) task force, aims to address systemic racism, sexism, colonialism, and other forms of exclusion in our SMBE soci...

smbe.org

Dr. Arun Sethuraman @arunsethuraman.bsky.social · last mo.

With two of my fav CSU colleagues - @cegamorim.bsky.social and @pleunipennings.bsky.social at #SMBE2026. California misses you!

Anne Stone @acstone.bsky.social · last mo.

What’s going on in that ancient S. American canid ‘s mouth? @mbravolo.bsky.social is looking into their oral microbiomes with @cegamorim.bsky.social & @hunemeier.bsky.social! #SMBE2026

Miriam starting her talk at SMBE! (Sorry for the terrible angle but someone with a big head was sitting in front of me)

bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 2mo ago

Joint dog and wolf genealogies reveal the evolution of the canine genome https://www.biorxiv.org/content/10.64898/2026.06.18.729863v1

Physalia-courses@ONLINE @physaliacourses.bsky.social · 2mo ago

🧬Join our online course Population Genomics Using Ancient DNA Data (21–25 Sept) with @arunsethuraman.bsky.social and @cegamorim.bsky.social & learn how ancient genomes are processed, authenticated, and analysed to reconstruct population history, migration, demography & selection shorturl.at/tXl7p

Society for Molecular Biology and Evolution @official-smbe.bsky.social · 2mo ago

#SMBE2026 S14: Evolution of Host-Pathogen Interactions in the Genomic Age 🗓️ Mon Jun 29, 3:50pm 🔗 smbe2026.org/programme Talks:

Eduardo Amorim @cegamorim.bsky.social · 3mo ago

Yesterday our article was featured on the cover of Nature. I'm incredibly proud of this team, led primarily by Latin Americans, & the result of the decade-long work by @hunemeier.bsky.social & lab. Kudos to the 1st authors too (incl @macscastro.bsky.social here on 🟦☁️) www.nature.com/nature/volum...

Dr Sam Leggett @samleggs22.bsky.social · 3mo ago

Interested in people who lived through the Norman Conquest? We have a new pre-print out about the aDNA of a rural community in Surrey who did just that! With more bioarch to come on this amazing site: www.biorxiv.org/content/10.6... @liabetti.bsky.social @cegamorim.bsky.social & others not on 🦋

biorxiv.org

Marcos Castro e Silva, PhD 🇧🇷@macscastro.bsky.social · 3mo ago

Also, check out the accompanying research briefing in Nature: www.nature.com/articles/d41...

Genomic roots of Indigenous Americans uncovered

Newly assembled genomes address the under-representation of Indigenous Americans in global genomic databases.

nature.com

Marcos Castro e Silva, PhD 🇧🇷@macscastro.bsky.social · 3mo ago

🚨 Check out our new paper in Nature! In our new study, we sequenced 128 high-coverage genomes from Indigenous peoples across Latin America and uncovered their unique genetic diversity and history. 👇🧵 www.nature.com/articles/s41...

The evolutionary history and unique genetic diversity of Indigenous Americans - Nature

Analysis of 128 high-coverage Indigenous American genomes shows extensive diversity shaped by several South American dispersals, ancient Australasian admixture, archaic introgression and long-term ada...

nature.com

Eduardo Amorim @cegamorim.bsky.social · 3mo ago

“Largest genomic dataset of Indigenous Americans to date sheds light on history, diversity and health” by Megan Martin @asubeinghuman.bsky.social @asuiho.bsky.social @evmedasu.bsky.social news.asu.edu/20260422-sci... Link to the original research article in the quoted skeet below.

Largest genomic dataset of Indigenous Americans to date sheds light on history, diversity and health | ASU News

The story of Indigenous peoples in the Americas is woven through their DNA, and scientists are beginning to trace its threads in new ways.

news.asu.edu

Eduardo Amorim@cegamorim.bsky.social · 3mo ago

The largest and most diverse collection of Indigenous American genomes 👉🏻 “The evolutionary history and unique genetic diversity of Indigenous Americans” @macscastro.bsky.social @hunemeier.bsky.social @chiarabarbieri.bsky.social @jrockdrigo.bsky.social 🔗 www.nature.com/articles/s41...

Eduardo Amorim @cegamorim.bsky.social · 3mo ago

“South America—the last continet to be settled—was peopled in surprisingly complex way” by Lizzie Wade @science.org www.science.org/content/arti... (Link to the paper in the quoted skeet below)

South America—the last continent to be settled—was peopled in surprisingly complex way

Genetically diverse groups arrived in three waves, some potentially carrying genes acquired from long-ago Australasian ancestors

science.org

Eduardo Amorim@cegamorim.bsky.social · 3mo ago

Eduardo Amorim @cegamorim.bsky.social · 3mo ago

Institut de Biologia Evolutiva (IBE)@ibe-barcelona.bsky.social · 4mo ago

📕Una investigación internacional liderada por @ibe-barcelona.bsky.social ha generado la mayor base de datos genómica de los indígenas americanos El estudio publicado en #Nature aporta 128 genomas completos y revela más de un millón de variantes genéticas nuevas🧬 👉https://shorturl.at/G8Ys6

Tres grandes dispersiones moldearon la diversidad genética de los pueblos indígenas de Sudamérica. Crédito a Marcos Araújo Castro e Silva.

Jennifer Raff @jenniferraff.bsky.social · 4mo ago

I am so happy to share this new paper that I wrote with @cegamorim.bsky.social! We hope that it will help encourage dialogue and collaboration between archaeologists and geneticists trying to understand kinship in the past. www.cambridge.org/core/journal... 🧬🧪

Scrutinizing Kinship and Biological Relatedness Through the Lens of Palaeogenomics | Cambridge Archaeological Journal | Cambridge Core

Scrutinizing Kinship and Biological Relatedness Through the Lens of Palaeogenomics - Volume 36 Issue 2

cambridge.org

Eduardo Amorim @cegamorim.bsky.social · 4mo ago

Our special issue KINSHIP TROUBLE is now out in the Cambridge Archaeological Journal, edited by S. Cveček, M. Raghavan, & P. Bickle. 👉 Kinship Trouble: Traversing Interdisciplinary Boundaries between Archaeology, Archaeogenetics, and Socio-cultural Anthropology 🔗 www.cambridge.org/core/journal...

Eduardo Amorim @cegamorim.bsky.social · 4mo ago

Pizzigalli et al. (2025) used mtDNA from tissue & poop samples to investigate croc diversity in Guinea Bissau in W. Africa. They found evidence for Nile crocodile (previously thought to be extinct in that region 200 years ago)! doi.org/10.1038/s415... #2026MMM #RIP

TOP: Fig. 1.Placement of study samples within the African crocodilian phylogenetic tree. Colours of the branches refer to the species found in Guinea-Bissau in this study, namely: the Nile crocodile (C. niloticus in green), the West African crocodile (C. suchus in yellow), and the West African dwarf crocodile (O. cf. tetraspisin purple). Red dots at the nodes represent highly supported nodes (>95% pp), coloured dots next to the branch description represent the samples collected for this study. The red rectangle in the inset map of Africa represents the geographic location of Guinea-Bissau. This figure and maps within it, were produced using QGIS version 3.36. BOTTOM: Fig. 2. Distribution of crocodile data collected in Guinea Bissau. Symbols with red strokes represent barcoded genetic samples.

Eduardo Amorim @cegamorim.bsky.social · 4mo ago

Sales‑Oliveira et al. (2023) found that croc chromosomes are conservative maintaining similar karyotype structures & diploid chrom numbers for ~100 MY! Most Crocodylinae (including Nile Crocodile) maintain the ancestral number of 2n = 32 (16 pairs) #2026MMM doi.org/10.1007/s004...

A Representative ideograms of three main karyotypes (2n = 30/32/38) observed among the true crocodile species analyzed in the present study showing Zoo-FISH results after using CSI-1, OST-1, OST-4, and OST-19 probes, and the 18S rDNA distribution. Arrows indicate the 4 main chromosomal rearrangements involved in karyotype differentiation from a putative ancestral 2n = 32. B Ancestral state reconstruction of diploid chromosome number using maximum parsimony. The phylogenetic relationships were adapted from Oaks (2011) and Colston et al. (2020), C. halli was added manually, & its position requires confirmation. Karyological data were collected from Cohen & Gans (1970), Kawagoshi et al. (2008), Hekkala et al. (2011), Srikulnath et al. (2015), Oliveira et al. (2021), Olmo and Signorino (2022), and this study (in bold). The colored circles represent different 2n, while the black diamonds indicate the species with unknown 2n. Ambiguous data (marked with an asterisk) are addressed in the “Discussion” section of the paper.

Eduardo Amorim @cegamorim.bsky.social · 4mo ago

There are many ways to get animal DNA! In a preprint (not yet peer-reviewed), scientists have shown that instead of invasive biopsies, they can generate whole genomes for humpback whales by non-invasively sampling their exhaled respiratory vapor or ‘blow’! #2026MMM doi.org/10.64898/2026.03.08.710374

(A) Geographic locations of non-invasive blow sampling (green dots) and invasive biopsy sampling for blow sampling validation (yellow dots) of humpback whales in Canada. (B) Image from a drone sent for blow sampling of a humpback whale. Scarring on the back of the whale was used for checking individual identification. (C) The drone used for blow sampling of humpback whales with custom attachments for holding a sterile petri dish for sampling. (D) An example of a blow sample from a humpback whale after collection by a drone but before processing by scientists.

Katie Hinde @mammalssuck.bsky.social · 4mo ago

HAT-TIP @acstone.bsky.social & @cegamorim.bsky.social for leading the genetics teaMMM of @n8upham.bsky.social @fervillanea.bsky.social @lucasrocm.bsky.social @carloschalicothere.bsky.social @elinork.bsky.social @afogel29.bsky.social @elliecat.bsky.social @michelle-e-white.bsky.social #2026MMM

a woman sitting at a table with the words they say it 's genetic on the bottom

Alt: a woman expressing "they say it's genetic"

media.tenor.com

Katie Hinde @mammalssuck.bsky.social · 4mo ago

Thank you again Oxford University Press or curating the special collection of articles about #2026MMM combatants freely accessible to folks researching the contenders academic.oup.com/asm/pages/ma...

March Mammal Madness 2026

The Journal of Mammalogy and Mammalian Species are once again pleased to participate in March Mammal Madness (MMM) with the addition of other related Oxford Uni

academic.oup.com

Eduardo Amorim @cegamorim.bsky.social · 4mo ago

a man applauds with the #schitts creek logo behind him

ALT: a man applauds with the #schitts creek logo behind him

media.tenor.com

Katie Hinde@mammalssuck.bsky.social · 4mo ago

Can we get an exuberant round of applause for @grumpator.bsky.social & everyone at ASU Library for the March Mammal Madness LibGuide with Player, Learner, & Educator Portals & updating the RESULTS page each night & LIBRARY COLUMNS in the MMMagazine libguides.asu.edu/MarchMammalM... #2026MMM

Katie Hinde @mammalssuck.bsky.social · 4mo ago

Are you ready? #2026MMM

a silhouette of a man in a top hat holding a cane in a dark room

ALT: a silhouette of a man in a top hat holding a cane in a dark room

media.tenor.com

Anne Stone @acstone.bsky.social · 5mo ago

Given tonight's #2026MMM, you might wonder how do we recover DNA from ancient animals or humans? To find out see www.youtube.com/watch?v=gp_y...!

Ancient DNA Analysis: From Sample to Sequence

YouTube video by StoneLab

youtube.com

Eduardo Amorim @cegamorim.bsky.social · 5mo ago

RIP the mold? Or the library? Xerophilic fungi like Aspergillus thrive at very low moisture and slowly consume paintings and paper—maybe by switching on enzyme genes that digest cellulose, glues, and binders. #RIP #2026MMM www.mdpi.com/2309-608X/10...

Historic oil painting RCS 15 from the church with signs of biodeterioration on both sides. (A) Front side of the painting, (B–D) Back, (E–G) Stratigraphy of the painting under UV light. (E), the ground layer, the paint layer, and the surface of the varnish (F), and the ground layer and the paint layer (G), all with visible penetration of dark septate hyphae. Light and Scanning electron microscopy (SEM) (K–M) images show conidiogenous structures of Aspergillus on the back and massive growth on the front side of the painting.

Eduardo Amorim @cegamorim.bsky.social · 5mo ago

Watch out! Mold (Aspergillus) is lurking all around us, in the soil and in the air. Genome sequencing shows many infections in vulnerable patients trace back to environmental sources. #2026MMM www.nature.com/articles/s41...

a, Unrooted maximum likelihood phylogenetic tree showing the itraconazole MIC breakpoint and clinical or environmental source of isolation. b, Map showing the location of isolation for isolates included in this study, with the legend (bottom right) indicating the cyp51A polymorphisms present. c, Unrooted maximum likelihood phylogeny of all 218 isolates showing the genetic relationship between isolates. ‘Clade A’ and ‘clade B’ indicate the clustered nature of triazole resistance polymorphisms.

Eduardo Amorim @cegamorim.bsky.social · 5mo ago

Genome-level analyses from Figueiro et al. (2017) revealed that the big cats have a very tangled evolutionary history. Their analyses showed evidence of post-speciation hybridization (aka introgression) between big cat species many millions of years ago. doi.org/10.1126/scia... #2026MMM

A) Frequency of species tree compared to alternative tree topologies, B) Divergence times of specific species tree topologies in windows, C) Possible signals of hybridization in the cats, and D) Relationship between recombination and phylogenetic discordance in windows across the genome.

Eduardo Amorim @cegamorim.bsky.social · 5mo ago

#RIP Book scorpion: 'Chelifer cancroides' is the sole surviving member of its genus. Over 300 other named Chelifer species have been moved or synonymized into relatives. Yet this tiny cosmopolitan arachnid thrives on every continent... just not in every battle. #2026MMM #RIP doi.org/10.1636/K13-...

Figure 1.(from Harvey 2014) —Chelifer cancroides (Linnaeus), living male from near Prebbleton, New Zealand (image courtesy of B. Donovan).

Katie Hinde @mammalssuck.bsky.social · 5mo ago

Moving On: #5-seed Grey Fox (Urocyon cinereoargenteus) vs. #12-seed Book Scorpion (Chelifer cancroides) #2026MMM

Eduardo Amorim @cegamorim.bsky.social · 5mo ago

The tiny pseudoscorpion 'Chelifer cancroides' evolved venomous claws independently from scorpions & spiders. Proteomics & transcriptomics of its venom revealed the first genuine pseudoscorpion toxins, including brand-new antimicrobial compounds! #2026MMM pubmed.ncbi.nlm.nih.gov/34416254/

Fig. 3. Documentation of venom release in C. cancroides after electrical stimulation of the chelal hand. The flow of current was facilitated by a conductive fluid (CF). A liquid indicator (LI) was used for the experiments to visualize venom release. A, B) Venom extraction using Type 1 capillaries with larger inner diameter. These capillaries partially cover the movable finger (MF) while the venom (V) is being collected. Before electrical stimulation, the movable finger is in a relaxed state (A). When electrical power is applied, the venom tooth pinches the glass wall of the capillary, causing the release of venom (B). C, D) Venom extraction from the fixed finger using Type 2 capillaries with an inner diameter of about 10 μm. These capillaries covered only the venom tooth and lamina defensor. The application of electricity caused the immediate release of venom, which replaced the brownish liquid indicator at the tip of the capillary.