Hydrostatic pressure is a dominant cue in the sea and many aquatic organisms are known to respond to changes in pressure, however the neuronal mechanisms have remained unclear.
We studied the larvae of the marine #annelid #Platynereis and found that they respond to increases in pressure by increased upward swimming.
#neuroscience
2/9

"Researchers at Durham University, UK, and Northwest University, Xi'an, China, examined 15 exceptionally preserved fossils of the #annelid #worm #Iotuba #chengjiangensis dating from the early #Cambrian period 515 million years ago.

The fossilized remains included evidence of the worms' guts and kidneys and revealed they had an unexpectedly complex structure similar to that of other #annelid #worms."

https://phys.org/news/2023-01-ancient-fossils-evolution-sea-worm.html

The full version of our desmosomal #connectome paper is now out, with all videos, supplements, source data nicely integrated
https://elifesciences.org/articles/71231#content
#neuroscience #annelid #microscopy

Ver nice work by Martín-Zamora et al showing the role of #heterochrony of gene expression in the evolution of larva in bilaterians #Annelid #EvoDevo #MolecularEvolution https://doi.org/10.1038/s41586-022-05636-7

And lastly, did we forget that selection is also involved in evolution? Not just variation?
#evolution #creationism #crazyscience #naturalselection #insect #crinoid #mutation #annelid