Ulf Jondelius

Interested in evolution and marine biodiversity. Research on Acoelomorpha. Professor of Invertebrate Zoology at the Swedish Museum of Natural History.

[James Lucas @JamesLucasIT]

This book from the 19th century depicts the Rhine Valley by creating an impression of three-dimensionality and spatial distance

[Ulf Jondelius @ulfjo]

@Pawel_Burkhardt @PNASNews @MSarsCentre @UiB @ERC_Research @JoanJSoto @Alexandre4_Jan Very interesting! And superb photos on the cover.

[John Gibbons 🇵🇸 @think_or_swim]

Seriously, what do you think are the long term prospects for a species that routinely engages in such pointless atavistic savagery against the living world – and one another?
(Faroe Islands, yesterday)

[Ulf Jondelius @ulfjo]

#WormWednesday Aphanostoma virescens, an Acoela species from shallow waters at the Swedish west coast. Seen in July 2024 https://t.co/ExflYhLYWA

[Ulf Jondelius @ulfjo]

@Allan_littlecar @tendersombrero The egg capsule looks a lot like what you find in umagillids, but those are symbiotic. Assuming this is a free living species I would have to guess it is another dalyellioid rhabdocoel.

[Mossworm @Mossworm1]

aggressive reminder that insects, fairy shrimp, remipedes, and now copepods too (!!!) are a clade of crustaceans called Allotriocarida or literally "weird shrimp". Bugs is shrimps, by definition

[MNCN Colecciones @MNCN_Col]

Best practices in #taxonomy are critical for addressing the current #biodiversitycrisis. Taxonomy needs to be rebranded to the scientific community as a modern, active and important discipline with sufficient funding and taxonomic researchers. #Entomology #Zoology #Museums

[Ulf Jondelius @ulfjo]

@BastianFromm @grahbudd Wow! I had no idea

[Ulf Jondelius @ulfjo]

@BastianFromm @grahbudd Breaches as in intertidal?

[Ulf Jondelius @ulfjo]

@gustavmelin Studier av landlevande snäckor som är en artrik grupp med fler arter än däggdjur och fåglar tillsammans, visar mycket hög extinction rate, 10-100 gånger högre än den "naturliga" utdöendehastigheten.

[Ulf Jondelius @ulfjo]

@gustavmelin Inlägget baseras på anekdotiska resonemang om ryggradsdjur, men > 95% av alla djur är inte ryggradsdjur. Bara någon enstaka procent av ryggradslösa djur har blivit utvärderade av IUCN. Det är därför meningslöst att extrapolera med utgångspunkt från ryggradsdjuren.

[Ulf Jondelius @ulfjo]

@Swidstrand Mycket oroande. Man får hoppas att det blir en regelrätt utredning med remissgång till relevanta expertorgan, universitet m fl. Från min utgångspunkt vore det bättre att samla alla dessa beslut hos SNV med uppgift att främst ta hänsyn till biologisk mångfald och ekologi.

[Ulf Jondelius @ulfjo]

@Matt_Pinner Stunning photo, but where is the forest?

[Ulf Jondelius @ulfjo]

@JackPerksPhoto @toby_wildlife Would be interested in a VOD solution as I am not in the UK. seems to be a wonderful documentary!

[Ulf Jondelius @ulfjo]

@lakeCritter Absolutely!

[Ulf Jondelius @ulfjo]

Want to work with marine meiofauna diversity and do a lot of fieldwork? Fully funded PhD available in Stockholm! Closing date is 15 June. Hurry up and apply here: https://t.co/U8f7rN5upa

[Ulf Jondelius @ulfjo]

We decided to keep this PhD position open until 15 August (same link).

[Sideshow European @SideshowEU]

Dear Members of the European Parliament,
tomorrow all eyes will be on you.

Tomorrow, like always, decency and honesty matter!
Tomorrow, every single vote, even a single vote matters.
Please don't fall victim to the corrosive bitterness of one man.

Please vote to #RestoreNature