Mastodawn

cassandroid אַנטיפֿאַ Jun 28, 2024

The #tunicates here around Mabul, Borneo would like to share their assessment of the current state of democracy in the United States.

Lukas VFN 🇪🇺May 17, 2024

#Jellyfish may dominate the future Arctic Ocean https://www.awi.de/en/about-us/service/press/single-view/quallen-koennten-kuenftig-den-arktischen-ozean-dominieren.html

Pan-#Arctic distribution modeling reveals #ClimateChange driven poleward shifts of major gelatinous #zooplankton species https://aslopubs.onlinelibrary.wiley.com/doi/full/10.1002/lno.12568

"jellyfish and other gelatinous zooplankton could be some of the few organism groups to benefit from #climate change... the transparent #cnidarians, #ctenophores and pelagic #tunicates thrive on rising water temperatures, nutrient contamination and #overfishing."

Single view - AWI

Benjamin Carr, Ph.D. 👨🏻‍💻🧬Jul 30, 2023

Bizarre ancient #sea creature brings evolution mystery to the surface
A new #tunicate #fossil, a close relative of vertebrates, is half a billion years old. There is now strong evidence that #tunicates are the closest relatives to #vertebrates, but a mystery still surrounds them. How did they evolve, and what did they evolve from? A 500 million-year-old fossil is now telling us more about the #evolution of these peculiar life forms. https://arstechnica.com/science/2023/07/bizarre-ancient-sea-creature-brings-evolution-mystery-to-the-surface/

Bizarre ancient sea creature brings evolution mystery to the surface

A new tunicate fossil, a close relative of vertebrates, is half a billion years old.

Ars Technica

michael Jul 6, 2023

6-JUL-2023
Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins
https://www.eurekalert.org/news-releases/994062

#science #evolution #fossils #tunicates

Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins

In a new study in Nature Communications Harvard researchers describe a 500 million-year-old tunicate fossil species. The study suggests that the modern tunicate body plan was already established soon after the Cambrian Explosion.

EurekAlert!

Lukas VFN 🇪🇺Jul 6, 2023

Discovery of 500-million-year-old #fossil reveals astonishing secrets of tunicate origins https://phys.org/news/2023-07-discovery-million-year-old-fossil-reveals-astonishing.html

A mid-#Cambrian #tunicate and the deep origin of the #ascidiacean body plan https://www.nature.com/articles/s41467-023-39012-4

"Ancestral #tunicates lived as stationary, filter-feeding adults and likely underwent #metamorphosis from a tadpole-like larva."

Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins

Karma Nanglu says his favorite animal is whichever one he's working on. But his latest subject may hold first place status for a while: a 500-million-year-old fossil from the wonderfully weird group of marine invertebrates, the tunicates.

Phys.org

KaylinQ Jan 20, 2023

"Jet-propelled #tunicates pump #carbon through the #oceans"

https://phys.org/news/2023-01-jet-propelled-tunicates-carbon-oceans.html#!

Jet-propelled tunicates pump carbon through the oceans

Salps are transparent, tube-shaped jellies well known for their propulsive jetting movements. According to new research, they also take quite a bit of carbon along for the ride.

Phys.org

Lukas VFN 🇪🇺Jan 19, 2023

Jet-Propelled #Tunicates Pump #Carbon Through the Oceans https://eos.org/research-spotlights/jet-propelled-tunicates-pump-carbon-through-the-oceans

Populations of these gelatinous #zooplankton are episodic, patchy. Sometimes they bloom and form huge aggregations. Their feces, daily migrations, and sinking carcasses sequester carbon into the #DeepSea. This is especially prominent in retentive or low-export #FoodWebs.

The Outsized Role of #Salps in Carbon Export in the #Subarctic Northeast #PacificOcean: Deborah Steinberg et al. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GB007523

Jet-Propelled Tunicates Pump Carbon Through the Oceans

New research reveals that blooms of the widespread gelatinous zooplankton—along with their feces, daily vertical migrations, and carcasses—increase marine carbon export.

Eos