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#cnidarian

0 posts0 participants0 posts today
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Lukas VFN 🇪🇺

#Invertebrate #larvae use many different #senses to choose their habitat oceanbites.org/invertebrate-la

Multisensory integration by polymodal sensory #neurons dictates larval settlement in a brainless #cnidarian larva onlinelibrary.wiley.com/doi/10

"Once a larva chooses a place to settle, it’s stuck there and will either live or die depending on the quality of the habitat... How do larvae use their senses to choose the best places to settle?"

Adult hydrozoans (Ectopleura crocea).
Continued thread
Public
Peter Barnes

#Dogwalking miscellany

#Beach #beachcombing

I'll pull these two out from the previous CW, as I don't think either is in any way affronting. If you want to see the two equivalent animals (another #mollusc, and #cnidarian) see the previous post.
Here's an amended description:
The first image is the beautiful radial skeleton of the Blue Button, or Porpita porpita, a colony organism (when alive), made up of cooperating hydroids. It drifts in the surface waters, using its stinging tentacles to capture small copepods, but will also hunt crabs and fish.
Next is a mollusc, which preys on the former, amongst other things.
It’s the beautiful violet sea snail, Janthina janthina, a free-floating snail that uses a raft of bubbles to keep it on the sea’s surface where it preys on hydrozoa. (Unlike the first, this was taken back home with my D700, not the iPhone3GS).


#photography #beach #macro #animals #iphoneography #iphone3gs #nikon

The beautiful radial skeleton of the Blue Button, as small stinging hydrozoan colony organism. The skeleton is lying on the sand. It's round and tiny, probably only a centimeter across, and pale, almost white. The material is translucent, and made up from concentric, slightly sinusoidal rings, giving it a slightly ridged texture and an appearance a little like a collapsed spiderweb.
The concentric coiled base of the violet sea snail, seen from below. It is a rich blue-violet colour, and shows the usual increasing radial, rotational growth of a snail shell. The shell itself is very thin, partly translucent, as the snail has to be light enough to float on a raft of bubbles.
An extreme closeup of the Janthina shell, showing the growth ridges, and more particularly its beautiful, partly translucent colour.
Public
Lukas VFN 🇪🇺

#Corals' biological clocks can function even without the #algae that nourish them
phys.org/news/2022-12-corals-b

Temporal gene expression patterns in the #coral #Euphyllia paradivisa reveal the complexity of biological clocks in the #cnidarian-algal #symbiosis science.org/doi/10.1126/sciadv

E. paradivisa exhibits tolerance to #CoralBleaching and survives without algae during prolonged darkness... Its #BiologicalClock functions even at a depth of 65 meters underwater and in almost complete darkness.

The coral species Euphyllia paradivisa in the Red Sea Gulf of Eilat. Credit: Dr. Gal Eyal.
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Raphael Aguillon Chambaud, PhD

Postdoc in #marinebiology #molecularecology and #neuroscience. Futur european PI in a very instable biosphere.

Oren Levy Lab
Lior Appelbaum Lab

Investigate #circadianrhythm, #clock, #sleep, #CellStress in #cnidarian symbiotic or not, in their normal state or under environmental pressure.

#Behavior #CellularBiology #Imaging #MolecularBiology #Omics #Field
#Nematostella #Exaiptasia #Cassiopea #StonyCorals

Posting about sciences and climate crisis awarness.

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