#entomology, #zoology, #paleontology, #linguistics, #ancientDNA, #populationgenetics Views my own
Joined November 2022
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Leonidas Davranoglou retweeted
Very important update with respect to R-Z2103 in general and specifically among Semitic-speaking people (L-943/L-945). There is a new Assyrian at the FTDNA Assyrian Project. He is R-BY139789 at FTDNA. This is equivalent to R-Y345092 at YFull. I hope he will upload his results to YFull so we can get a more definitive idea of his placement. But the most important thing to take away from the new result is that he is R-Y345092 but far removed from the other R-Y345092 Assyrians. Going by 111 STR markers the new Assyrian has a genetic distance of 27 and 32 with the other Assyrians. FTDNA dates the split between the R-Y345092 Assyrians at ~3100 years ago.
Leonidas Davranoglou retweeted
【ほぼ同じDNAなのに姿が一変？鳥が持つ「超遺伝子」】ガラパゴス諸島のフィンチの全ゲノムを調べると、全体はほぼ同じなのに、くちばしや体格を劇的に変える単一の「超遺伝子」が多様化を促していたことがわかった。Nat Commun誌 doi.org/10.1038/s41467-026-7…
Leonidas Davranoglou retweeted
🇧🇷 Wasp-mimicking Katydid (Scaphura nigra)
📸: inaturalist.org/observations…
When did lizards first start shedding their tails to escape danger? Our newly published study in Palaeontologia Electronica provides direct fossil evidence that this remarkable escape mechanism was already operating 99 million years ago, during the age of the dinosaurs! 1/3
The discovery concerns a tiny lizard tail preserved in a fingernail-sized amber piece. The tail retains the distinctive muscle arrangement at the point of detachment, which is consistent with controlled tail release, scientifically known as caudal autotomy. 2/3
We were able to unveil the morphology of this one-of-a-kind specimen using X-ray microtomography. This collaboration between Greek, Jewish and Palestinian researchers reminds us how much we can discover together, even in troubled times.
Link to study:
palaeo-electronica.org/conte…
Great coverage of our work from the Independent:
New dinosaur-era insect found trapped in tree resin named after Teletubbies character independent.co.uk/news/scien…
Leonidas Davranoglou retweeted
I guess no lessons were learned from driving Tasmanian Tigers extinct a century ago. 🤷🏻♂️
Leonidas Davranoglou retweeted
Incredible, we just discovered that the Surinam toad has sensory organs in the tips of its forelimbs that sense prey without contact, similar to the star-nosed shrew. It's a wild world and we're just starting to learn about it!
link.springer.com/article/10…
Our team is peaking into the Cretaceous world, studying elusive creatures that lived 99 million years ago:
Evolutionary insights from a rare male palm bug (Hemiptera: Thaumastocoridae) in Cretaceous amber doi.org/10.3897/asp.84.e2103…
Leonidas Davranoglou retweeted
Cat of the day 7- sand cat
found in: Deserts of North Africa, Middle East, and Central Asia
• habitat: Sandy and stony arid deserts
• eats: Rodents, lizards, snakes, and birds
• status: Least Concern
Leonidas Davranoglou retweeted
1/ 🧵🧵🧵
Amer Abu Sabila was a 24-year-old Bedouin construction worker from the Negev. He was not a soldier, he was not assigned to Sderot, and he had no obligation to stop.
The footage in this thread is heartbreaking but necessary for people to bear witness to his incredible bravery, and the two girls whose lives he saved.
On the morning of October 7 he was asked to drive a wounded Jewish mother and her two little girls to the police station. He got into their car and did it. The station had already been taken.
The men waiting there killed him, killed her, and missed the children hiding in the back. Remember his name.
What happens when you question @nntaleb 's antisemitic claims with scientific data from aDNA? Obviously you get blocked (an honour for me, actually).
His h-index is 64, yet he neither acknowledges basic concepts in genetics, nor has he kept up with the literature. 1/2 – at Israel
