#polychaetes — Public Fediverse posts

A sassy sparkler: Scientists film footage of alien, shimmering creature in the remote ocean https://mashable.com/article/ocean-species-deep-sea-footage-iridescent-animal

Dr. Karen Osborn: "They come in every imaginable color and pattern, from completely transparent to iridescent to candy-striped. You can find #polychaetes of every shape from spherical to sausage-shaped to pencil thin, and every size from microscopic to several feet long. Some are smooth and sleek, others frilly and elaborate."

#Bacteria found to produce #proteins that act like #antifreeze, helping marine #worms survive in polar waters
https://phys.org/news/2024-06-bacteria-proteins-antifreeze-marine-worms.html

Resistance to freezing conditions of endemic #Antarctic #polychaetes is enhanced by cryoprotective proteins produced by their #microbiome https://www.science.org/doi/10.1126/sciadv.adk9117

"The finding showed that the worms and bacteria had formed a symbiotic relationship—the bacteria got a home in the worm and a food source, and the worms avoided freezing to death."

Mediterranean marine #worm has developed eyes "as big as millstones" https://phys.org/news/2024-04-mediterranean-marine-worm-eyes-big.html

High-resolution vision in #pelagic #polychaetes https://www.cell.com/current-biology/fulltext/S0960-9822(24)00237-9

"if our eyes were proportionally as big as the ones of this worm, we would need a big, sturdy wheelbarrow and brawny arms to lug around the extra 100kg... the worm's eyes weigh about 20x as much as the rest of the animal's head and seem grotesquely out of place... As if two giant, shiny red balloons have been strapped to its body."

Using #DNAsequencing to show how marine worms adapt to #DeepSea conditions https://phys.org/news/2023-10-dna-sequencing-marine-worms-deep-sea.html

Third-Generation #Sequencing Reveals the Adaptive Role of the #Epigenome in Three Deep-Sea #Polychaetes: Maeva Perez et al. https://academic.oup.com/mbe/article/40/8/msad172/7231443

"#epigenetic regulation by #DNAmethylation could be an adaptive mechanism that counteracts the effects of hydrostatic pressure at the bottom of the #ocean"

Using #DNAsequencing to show how marine #worms adapt to deep-sea conditions https://phys.org/news/2023-10-dna-sequencing-marine-worms-deep-sea.html

Third-Generation #Sequencing Reveals the Adaptive Role of the #Epigenome in Three #DeepSea #Polychaetes: Maeva Perez et al. https://academic.oup.com/mbe/article/40/8/msad172/7231443

"#Methylation is an #epigenetic process that chemically modifies some of DNA bases. It plays a role in environmental acclimatization, making organisms living in habitats where conditions are unpredictable more resilient to environmental changes"

Deep-sea imagery and observations reveal novel #octopus feeding behavior
https://phys.org/news/2023-07-deep-sea-imagery-reveal-octopus-behavior.html

Miles down for lunch: #DeepSea in situ observations of #Arctic finned #octopods #Cirroteuthis muelleri suggest #pelagic–#benthic feeding #migration https://royalsocietypublishing.org/doi/10.1098/rspb.2023.0640

"Videos from remotely operated vehicles and towed observation systems suggest that the #DumboOctopus Cirrotheutis muelleri migrates from the water column to the #SeaFloor, where it catches #crustaceans and #polychaetes."