James Fleming
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jamesfvfleming.bsky.social
James Fleming
@jamesfvfleming.bsky.social
Postdoc: University of Barcelona BdP Fellow (based in Japan). Inverts, Outreach, Palaeo and Phylo. Sometimes also tRPGs. he/him. En/De/日本語/Ga/No/Es OK (in decreasing proficiency)! Personal Account
Reposted by James Fleming
🔊 ERGA committees are open to all members. Interested in embedding justice, equity, diversity, and inclusion principles in #biodiversitygenomics? Consider joining our Social Justice Committee!

www.erga-biodiversity.eu/team-1/socia... #community #science #socialjustice #diversity
www.erga-biodiversity.eu
February 10, 2026 at 9:00 AM
Reposted by James Fleming
It's that developing sideline in Texas Hold'em, presumably
February 9, 2026 at 4:20 PM
Reposted by James Fleming
Indeed, Czech journalist Saša Uhlová argues that the ‘iron wage curtain’, maintaining stark economic East-West inequalities through the systemic reliance of Western industries on exploited East-European labour, is one of the biggest threats to social cohesion and stability in today’s Europe
February 9, 2026 at 12:14 PM
I love when you see two of them next to each other and they start boxing like some weird Shrimp-themed Rock 'em Sock 'em Robot set. Adorable.
February 3, 2026 at 7:36 AM
To detect problematic para and xenologs, I might recommend TreSpex, which has a good workflow.
I am also working on BOSTIn, which combines the DE-Score with others for a more comprehensive picture of a variety of phylogenetic artifacts
github.com/JFFleming/BO...
journals.sagepub.com/doi/10.4137/...
TreSpEx–-Detection of Misleading Signal in Phylogenetic Reconstructions Based on Tree Information - Torsten H. Struck, 2014
Phylogenies of species or genes are commonplace nowadays in many areas of comparative biological studies. However, for phylogenetic reconstructions one must ref...
journals.sagepub.com
February 1, 2026 at 2:36 PM
At the same time, the Vieira & Rozas study on Odorant Binding Proteins shows 62% of sequences are saturated. That is probably due to the high-paced adaptation associated with ODPs - but that also makes them challenging to resolve phylogenetically (which they rightly note in that study).
February 1, 2026 at 2:36 PM
A good example (with paralogs) is in Table 1. I took one of my old studies, which has multiple opsin paralogs (expressed in ciliary and rhabdomeric receptors in the eyes, brains, skin and pineal glands), and the DE-Score is high because the sampling across each paralogous clade is reasonable even.
February 1, 2026 at 2:36 PM
Topology errors from site saturation are generally more of an interaction between the dataset and the model (it's a violation of the GTR model's assumptions), so how the DE-Score deals with para- and xenologs will depend on the dataset.
February 1, 2026 at 2:36 PM
This was inspired by a lot of great work that has already been done before me, especially this work by Mattia Giacomelli - www.cell.com/iscience/ful...
and this work by @xelamarie92.bsky.social - academic.oup.com/sysbio/artic...

Which got me thinking about how amino acid recoding could be used. 8/7
Resolving tricky nodes in the tree of life through amino acid recoding
Biological sciences; Evolutionary biology; Phylogenetics
www.cell.com
February 1, 2026 at 10:36 AM
The reason that score varies is that the DE-Score normalises itself for the size of your dataset (the bottom bit), letting you compare saturation between datasets regardless of how their size. So it's simple! Input the alignment, look for Scores bigger than 0, then bigger than the Critical! 7/7
February 1, 2026 at 10:36 AM
However, there are some points when the dataset has information, but is still too noisy. A "yellow card" to the "red card" of DE-Score 0. That's when the within/between ratio < 0.265. The DE-Score varies for each dataset, but our software calculates it, and calls it the Critical Score. 6/7
February 1, 2026 at 10:36 AM