Results 71 to 80 of about 1,256 (206)

Molecular phylogeny and fossil records reveal the origin and evolutionary history of deep-sea Ophiuroidea

open access: yesFrontiers in Marine Science
IntroductionThe evolutionary history and biogeographic assembly of deep-sea Ophiuroidea remain incompletely understood. This study aimed to clarify the origin, spatial evolution, and long-term assembly of deep-sea ophiuroid diversity through an ...
Han Yan   +11 more
doaj   +1 more source

Benthic megafauna and the functioning of macroalgal forests and urchin barrens

open access: yesOikos, Volume 2026, Issue 7, July 2026.
Two temperate rocky reef food‐web models, representing the trophic diversity of the Mediterranean rocky reef communities, were built for the two stable states: macroalgal forests and barren grounds, which are characterized by opposite amounts of erect macroalgal biomass.
Chiara Bonaviri   +18 more
wiley   +1 more source

Quantitative assessment of the Blake Nose ophiuroid assemblage.

open access: yes, 2013
A: Detrended Correspondence Analysis (DCA) of modern ophiuroid assemblages in comparison with the Blake Nose ophiuroid fauna and Cretaceous shelf assemblages.
Lea D. Numberger-Thuy (303388)   +6 more
core   +1 more source

Posidonia oceanica Leaves as a Natural Filler for Poly(Butylene Succinate‐Co‐Adipate) Composites: Characterization and Biodegradation Assessment in Seawater

open access: yesJournal of Vinyl and Additive Technology, Volume 32, Issue 4, Page 988-1005, July 2026.
This study shows that incorporating 5–10 wt.% Posidonia oceanica , with or without micro‐talc, in PBSA preserves thermal stability, modifying crystallization behavior, and maintains good filler dispersion and interfacial adhesion. Mechanical properties are moderately stiffened. ABSTRACT This study investigates the use of Posidonia oceanica (PO) leaves,
Chiara Pedrotti   +8 more
wiley   +1 more source

Ophiuroids Discovered in the Middle Triassic Hypersaline Environment

open access: yesPLoS ONE, 2012
Echinoderms have long been considered to be one of the animal phyla that is strictly marine. However, there is growing evidence that some recent species may live in either brackish or hypersaline environments. Surprisingly, discoveries of fossil echinoderms in non-(open)marine paleoenvironments are lacking.
Salamon, Mariusz A.   +4 more
openaire   +6 more sources

A late Maastrichtian "out-of-the-ordinary" ophiuroid from The Netherlands [PDF]

open access: yes, 1995
A tetramerous specimen of a new late Maastrichtian ophiuroid species from the Meerssen Member (Maastricht Formation) as exposed at the ENCI NV quarry, south of Maastricht, is described and briefly discussed.
Jagt, J.W.M., Deckers, M.J.M.
core  

Synergic effects of tryptamine and octopamine on ophiuroid luminescence (Echinodermata).

open access: yes, 2004
In ophiuroids, bioluminescence is under nervous control. Previous studies have shown that acetylcholine is the main neurotransmitter triggering light emission in Amphipholis squamata and Amphiura filiformis.
Vanderlinden, Christine   +1 more
core   +1 more source

The Enigmatic Hadal Ophiuroid Has Found Its Place: A New Family Abyssuridae Links Ultra-Abyssal and Shallow-Water Fauna

open access: yesDiversity
Severely understudied and poorly known ultra-abyssal (hadal) brittle-stars of the genus Abyssura were collected during a recent expedition to the Japan Trench at depths between 6183 and 6539 m and were examined for the first time for both their molecular
Alexander Martynov, Tatiana Korshunova
doaj   +1 more source

Profundum solomoni (Amphipoda: Uristidae) Exhibits a Disjunct Geographic Distribution at Hadal Depths Across the San Cristobal Trench, Santa Cruz Trench and Nova Canton Trough

open access: yesZoologica Scripta, Volume 55, Issue 4, Page 639-651, July 2026.
ABSTRACT Hadal environments (> 6000 m ocean depths) are often viewed as isolated locations with high species endemism due to limited dispersal. However, molecular studies continue to reveal greater complexity that questions historical perceptions. Recent population genetic studies focused on scavenging amphipods have identified broadly distributed ...
Brett C. Gonzalez   +2 more
wiley   +1 more source

A note on an early Jurassic ophiuroid from Rachecourt (Lorraine, Belgium) [PDF]

open access: yes, 1996
A fairly well-preserved ophiuroid, collected from micaceous sandy argillites of the Messaney Formation (Domerian, late Pliensbachian) as exposed at Rachecourt (Gaume, Belgian Lorraine) is described and tentatively identified as Sinosura wolburgi (Hess ...
Jagt, J.W.M., Delsate, D.
core  

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