Oleksandr Holovachov
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holovachov.bsky.social
Oleksandr Holovachov
@holovachov.bsky.social
53 followers 41 following 59 posts
Nematologist
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holovachov.bsky.social
Warning to all interested in metagenomics. If you want to try using github.com/benn888/PRON... – DO NOT! The script is missing all required dependencies and is a waste of your time on ARM64bplatform. I do not believe www.frontiersin.org would publish anything so poorly written and untested.
GitHub - benn888/PRONAME: PRONAME is an open-source bioinformatics pipeline that allows processing and significantly increasing the accuracy of Nanopore metabarcoding sequencing data.
PRONAME is an open-source bioinformatics pipeline that allows processing and significantly increasing the accuracy of Nanopore metabarcoding sequencing data. - benn888/PRONAME
github.com
October 25, 2025 at 12:16 PM
holovachov.bsky.social
Ultraconserved Elements and Machine Learning Classifiers Enable Robust Phylogenetics and Taxonomy in Model and Non-Model Nematodes doi.org/10.1111/1755...
Ultraconserved Elements and Machine Learning Classifiers Enable Robust Phylogenetics and Taxonomy in Model and Non‐Model Nematodes
Nematodes are among the most diverse animals, yet only around 28,000 of an estimated one million species have been morphologically described. Their small size, morphological simplicity, and cryptic d...
doi.org
October 24, 2025 at 4:03 PM
Reposted by Oleksandr Holovachov
marinespecies.bsky.social
www.marinespecies.org/news.php?p=s...
Edaphobase adopts Nemys as taxonomic backbone for nematodes
As part of a collaboration between WoRMS and Edaphobase, the World Database of Nematodes (Nemys) has been integrated as the official taxonomic backbone for Nematoda in Edaphobase.
www.marinespecies.org
October 20, 2025 at 8:47 AM
holovachov.bsky.social
New identification manual "Introduction to #Nematodes of the Family Cephalobidae" was released as PDF on my ResearchGate account. Published with Sven Boström with support from @worm-lab.bsky.social and Swedish Museum of Natural History.
October 14, 2025 at 5:56 PM
Reposted by Oleksandr Holovachov
deepakhaarith.bsky.social
I am looking for a PhD student in #molecularbiology #biochemistry #bioinformatics to work with #plants and #nematodes

Please share widely. Also, prospective applicants please check out this link:
www.alligator.org/article/2024...

#PhDposition
July 9, 2025 at 6:33 PM
Reposted by Oleksandr Holovachov
youngnemas.bsky.social
🪱 Calling all Early-Career Nematologists:
Registration for #VNC2025 is NOW OPEN! 🎉

If you are MSc student, PhD candidate, or postdoc working in nematology, Register and submit your abstract.

Register here👉 lnkd.in/dzTRsK7z

⏰ Registration closes September 10th!!!
July 10, 2025 at 1:19 PM
Reposted by Oleksandr Holovachov
david1822.bsky.social
#Nematodes: these worms stack together to form living towers
edition.cnn.com/2025/06/05/s...
First evidence of ‘living towers’ made of worms discovered in nature | CNN
Scientists captured nematodes that stack themselves into a wriggling, vertical tower for the first time. Watch the tiny architects in action.
edition.cnn.com
June 8, 2025 at 8:58 AM
holovachov.bsky.social
The ForBio/NRM course on the Identification of Soil and Freshwater #Nematodes is taking place in my office/lab at the Swedish Museum of Natural History www.nrm.se. Morning preparation for live display of fixed and live slide mounted nematodes in progress here.
June 4, 2025 at 4:59 PM
Reposted by Oleksandr Holovachov
metasian.bsky.social
Netsuke of a Female Monkey Holding a Nut while her Baby Crawls on her Back https://www.metmuseum.org/art/collection/search/59647
Gift of Alvin H. Schechter, 1985
June 4, 2025 at 10:15 AM
Reposted by Oleksandr Holovachov
nemaplant.bsky.social
New paper alert! A chromosome-scale genome of Meloidogyne hapla. A devastating plant pathogen. But this is not just another genome.
www.biorxiv.org/content/10.1...
🧵
NO CANONICAL TELOMERES but a novel 16-mer repeat at chromosome ends. A new mechanism for chromosome-end maintenance?
May 23, 2025 at 4:25 PM
Reposted by Oleksandr Holovachov
david1822.bsky.social
🌍 Save the date! The 36th Symposium of the European Society of Nematologists will take place in Egmond aan Zee, the Netherlands, from June 1–5, 2026.
🔗 First details now live: www.esn2026.nl/copy-of-home
#ESN2026 #Nematology
May 29, 2025 at 7:29 AM
Reposted by Oleksandr Holovachov
david1822.bsky.social
📌 Repost from the Italian #Nematology Society
🎨 𝗡𝗲𝗺𝗔𝗿𝘁 𝗖𝗼𝗺𝗽𝗲𝘁𝗶𝘁𝗶𝗼𝗻: 𝗧𝗵𝗲 𝗕𝗲𝗮𝘂𝘁𝘆 𝗼𝗳 𝗡𝗲𝗺𝗮𝘁𝗼𝗱𝗲𝘀
Unleash your creativity and help spread awareness about #nematodes through art! All forms of artistic expression are welcome.
🆓 Free to enter
📅 Deadline: August 19, 2025
May 30, 2025 at 1:57 PM
Reposted by Oleksandr Holovachov
biorxiv-plants.bsky.social
A Chromosome-scale Reference Genome of Meloidogyne hapla reveals localized recombination hotspots enriched with Effector Proteins https://www.biorxiv.org/content/10.1101/2025.05.21.654606v1
May 23, 2025 at 12:04 PM
Reposted by Oleksandr Holovachov
raymondlc.bsky.social
A beautiful Elaphonema sp female found in some dry soil from South Africa. 🐘 First and only discovered in South Africa by Prof J Heyns during his PhD studies 🇿🇦 #nematology #free-livingnematode
May 21, 2025 at 1:04 PM
Reposted by Oleksandr Holovachov
simonebrito.bsky.social
Honored to spend the next few weeks at the Swedish Museum of Natural History, working in the Department of Zoology with Prof. @holovachov.bsky.social I’ll be studying new species of marine nematodes. Thanks to @dsbsoc.bsky.social and @hollybik.bsky.social for this amazing experience!
May 17, 2025 at 5:47 PM
Reposted by Oleksandr Holovachov
simonebrito.bsky.social
May 17, 2025 at 5:47 PM
Reposted by Oleksandr Holovachov
berndsures.bsky.social
Great News: Our book Aquatic Parasitology: Ecological and Environmental Concepts and Implications of Marine and Freshwater Parasites has been published online open access! link.springer.com/book/10.1007... @nicojsmit.bsky.social @unidue.bsky.social
Aquatic Parasitology: Ecological and Environmental Concepts and Implications of Marine and Freshwater Parasites
A unique open access collection on ecological and environmental parasitology in marine and freshwater. Covers climate change and parasite conservation.
link.springer.com
May 16, 2025 at 1:01 PM
Reposted by Oleksandr Holovachov
thegsbi.bsky.social
📢The Global Soil Biodiversity Conference 2026 abstract submission portal is NOW OPEN 🐛🐜🕷️🦠🪱

Abstracts are due July 15th 23:59 PDT ‼️

Submit an abstract 👇

globalsoilbiodiversity2026.org/abstract/
May 15, 2025 at 2:27 PM
Reposted by Oleksandr Holovachov
ashmoleanmuseum.bsky.social
Here we share the inspiration for today’s animation.

This cute carving of a seated monkey holding a crab is a Japanese netsuke, which were used to secure small personal items such as purses, pipes or medicine containers to a kimono sash (obi).
A netsuke depicting a monkey with a baby riding on its back. The monkey holds a crab by the legs.
May 15, 2025 at 1:01 PM
Reposted by Oleksandr Holovachov
patrickkapty.bsky.social
'Owl attacking a bat' netsuke
ebony wood with inlays
19th century CE
Japan

#handmade #japanese #netsuke #circa19thcentury #Japan #japanesecraft #carved #wood #inlay #japaneseart #art #tiny #sculpture #utilitarian #usefulart
A netsuke is a small carved ornament, especially of ivory or wood, worn as part of Japanese traditional dress as a toggle by which an article may be attached to the sash of a kimono. A netsuke is a miniature sculpture, originating in 17th century Japan. Initially a simply-carved button fastener on the cords of an inrō box, netsuke later developed into ornately sculpted objects of craftsmanship. Like all art objects of great worth, netsuke distill the essence of a specific time and place. Worn as part of a traditional Japanese man’s ensemble from the 17th-century onwards, the netsuke’s purpose was hyper-specific, and its functional simplicity lent artists unlimited freedom to constantly redefine what it could be. Formally, netsuke have few requirements: they must be small, they must have holes through which to pass a single cord, and they must have no protuberances that could damage one’s kimono. Everything else is left to the carver’s imagination. As such netsuke differ in style, subject and material as widely as the personalities of their makers, and they are consequently supremely collectable. Netsuke emerged as a practical solution to dressing in 17th-century Japan. ‘Men’s kimonos didn’t have sewn-up sleeves — they were completely open, front and back, and that meant that the sleeves couldn’t be used as a pocket, as they could in women’s kimonos,’ Goodall explains. To carry things suchas tobacco, medicine or other necessities, men hung stylish inro and other vessels from cords looped under and behind the wide sashes that held their kimonos in place. At the other end of those cords, men fastened small, ornamental objects as counterweights; those objects evolved into netsuke.
May 15, 2025 at 2:30 PM
holovachov.bsky.social
I am starting a new long thread, dedicated to a project funded by the Swedish Taxonomy Initiative / Artdatabanken www.slu.se/artdatabanken/ and focusing on the diversity of #nematoda associated with insects in Sweden.
Ett kunskapscentrum för arter och naturtyper | slu.se
SLU Artdatabanken är ett kunskapscentrum för arter och naturtyper. Vi arbetar med faktainsamling, information och forskning om biologisk mångfald i Sverige.
www.slu.se
May 14, 2025 at 7:50 PM
Reposted by Oleksandr Holovachov
katakurakenta.bsky.social
Just finished. Texts are in ALT.
Title : Marumetako (Spherical octopus) Material: deer antler Size: 2.6cm x 2.5cm x 2.1cm 2025 I thought to myself, "I haven't carved an octopus in about a year," so I decided to create a composition of an octopus by itself for the first time in a while. Mollusks are soft and pliable with muscular ridges, and I feel that the difference between the two is a very attractive motif. This time, while carving out the shape of such an octopus, I created a work that is small enough to be easily used as a netsuke in everyday life.
May 14, 2025 at 10:15 AM
holovachov.bsky.social
An unidentified species of #Caenorhabditis from the Atacama desert in Chile is growing now in my lab :-)
Caenorhabditis
May 14, 2025 at 1:26 PM
Reposted by Oleksandr Holovachov
roger1952.bsky.social
A netsuke figure of a sleeping boar covered by grasses. This netsuke dates from the Meiji period.

(Source: metmuseum.org)
May 8, 2025 at 9:32 PM
Reposted by Oleksandr Holovachov
natrevbiodiv.nature.com
ICYMI: New online! Utilizing aquatic environmental DNA to address global biodiversity targets
Utilizing aquatic environmental DNA to address global biodiversity targets
Nature Reviews Biodiversity, Published online: 28 April 2025; doi:10.1038/s44358-025-00044-xAquatic eDNA-based technologies offer the potential for universal and standardized biodiversity monitoring. In this Perspective, Altermatt et al. discuss how these technologies can help to achieve the targets of the Kunming–Montreal Global Biodiversity Framework through informing appropriate policy and actions, and describe the next steps required for widespread and equitable use of these technologies.
bit.ly
May 5, 2025 at 8:41 PM