Jirka Manuel Petersen
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drjmpetersen.bsky.social
Jirka Manuel Petersen
@drjmpetersen.bsky.social
Currently: Postdoc at Max Planck Institute (Bremen🇩🇪) working on virus-like bacteria in protists

PhD in Invertebrate pathology and Virology 🦀🦋
🪲 Field note from Menorca 🇪🇸
Spotted a striking bloody-nosed beetle (Timarcha tenebricosa) on a roadside this morning. These flightless leaf beetles are slow-moving and exude a red defensive fluid (“nosebleed”) when disturbed - hence the name!

#Entomology #FieldNotes #Menorca #Beetles #insects
October 15, 2025 at 7:28 AM
Rhododendron leafhopper (Graphocephala fennahi) from the rhododendron bush in front of my mom's house in Germany. I love the contrast of that turquoise and orange ✨️ #insect #science #leafhopper #photography #nature
September 16, 2025 at 12:20 PM
Some photos from the scientific expedition I joined in the Austrian Alps 🏔️ with the @fischerlab.bsky.social team from @mpimarinemicrobio.bsky.social! We were hunting for viruses in high-altitude lakes 🦠🏞 Already excited to see what discoveries await in those samples 👨‍🔬 #science #postdoclife #virus
August 1, 2025 at 10:31 AM
Argiope bruennichi spotted in Wageningen with its wrapped-up prey 🕸️
A stunning wasp spider with built-in warning colors🐝
#Wageningen #waspspider #arachnids #nature
August 1, 2025 at 6:30 AM
In 2022, we published The Naked Truth - my 1st PhD paper - reviewing nudiviruses and their links to baculo- & bracoviruses. The field has advanced quickly since, and I’m grateful for the ongoing interest and citations from the community🙏🐛🧬 #virology #arthropods #DNAviruses
🔗 doi.org/10.1016/j.ji...
July 24, 2025 at 11:50 AM
One of my favorite insects! 🦋 Hummingbird hawk-moth (Macroglossum stellatarum), spotted in Leck (Germany). So difficult to properly focus on this speedster!⚡️📸 #hawkmoth #insect
July 16, 2025 at 2:49 PM
Spotted Lasiocampa quercus (oak eggar) on a hike in the Stubaital 🇦🇹
These hairy caterpillars eventually become large moths with 4.5 to 7.5 cm wingspan!
#Stubaital #Insects #Lepidoptera #OakEggar #FieldFinds
July 16, 2025 at 11:54 AM
This first week of sampling alpine lakes in mountainous heights had everything... snow, sunburn, frogs, sheep, marmots, insects and crustaceans, and of course, preliminary insights on the microbes that live in those extreme environments. Looking forward to what we'll find in the coming weeks🧑🏼‍🔬🦠
July 15, 2025 at 7:20 AM
Photos of a family of Long-eared Owls (Asio otus) I spotted during my first winter in the Netherlands 💤❄️

#AsioOtus #Owl #Birds #Netherlands #Nature #Photography
April 8, 2025 at 7:01 PM
Caught this Common Kingfisher (Alcedo atthis) while I was floating past on a bamboo boat in Vietnam 🐦🇻🇳

The last time I saw one was back in snowy Germany - such a striking sight against the white, but no camera on me. This time, I was ready 📸💙

#Kingfisher #AlcedoAtthis #Vietnam #Photography #nature
April 4, 2025 at 8:18 AM
This Stork-billed Kingfisher (Pelargopsis capensis) flew over the water like a bolt of blue lightning ⚡💙

I’ve always loved kingfishers for their vibrant colours, but this one really takes the cake with its crimson-red beak!

#Bird #Kingfisher #nature #photography #Singapore #PelargopsisCapensis 🐦🌿📸
April 1, 2025 at 6:59 AM
New day, new butterfl—wait, not a butterfly? My bad. It’s a moth! 💛
Spotted lots of these vibrant yellow beauties in Vietnam and thought they were butterflies. But nope - Dysphania militaris, the False Tiger Moth. What a twist!
#insect #nature #photography #WhatIsThisBug #AskAnEntomologist #Vietnam
March 29, 2025 at 7:30 AM
Starting small with a post of this butterfly I saw during my stay in Singapor. I believe this is the Common Rose butterfly (𝘗𝘢𝘤𝘩𝘭𝘪𝘰𝘱𝘵𝘢 𝘢𝘳𝘪𝘴𝘵𝘰𝘭𝘰𝘤𝘩𝘪𝘢𝘦), but please let me know if I'm wrong #insect #butterfly #nature #photography #AskAnEntomologist #WhatIsThisBug
March 28, 2025 at 9:54 AM