Biology Open, 2017 Ophiuroids locomote along the seafloor by coordinated rhythmic movements of multi-segmented arms. The mechanisms by which such coordinated movements are achieved are a focus of interest from the standpoints of neurobiology and robotics, because ...
Yoshiya Matsuzaka +4 more
doaj +3 more sources
The peristomial plates of ophiuroids (Echinodermata: Ophiuroidea) highlight an incongruence between morphology and proposed phylogenies. [PDF]
PLoS ONE, 2018 The peristomial plates are skeletal components of the interbrachial frame (or mouth frame), which is located below the true mouth of ophiuroids. Whilst the peristomial plates were extensively described and used as diagnostic characters by some early ...
Iain C Wilkie, Martín I Brogger
doaj +3 more sources
A brittle star is born: Ontogeny of luminous capabilities in Amphiura filiformis. [PDF]
PLoS ONEBioluminescence is the production of visible light by living organisms thanks to a chemical reaction, implying the oxidation of a substrate called luciferin catalyzed by an enzyme, the luciferase.
Constance Coubris +3 more
doaj +2 more sources
Trophic Position Stability of Benthic Organisms in a Changing Food Web of an Arctic Fjord Under the Pressure of an Invasive Predatory Snow Crab, Chionoecetes opilio [PDF]
BiologyThe introduction of a large predatory snow crab, Chionoecetes opilio, into the Kara Sea is a unique situation where the impact of an invasive species affecting an otherwise undisturbed ecosystem can be observed unhindered by other ecosystem stressors ...
Anna K. Zalota +7 more
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Morphological Characterization and Complete Mitochondrial Genome of a New Epizoic Hexamerous Brittle Star <i>Gymnolophus sexradia</i> sp. Nov. [PDF]
Ecol EvolThis study describes a new hexamerous epizoic brittle star species, Gymnolophus sexradia sp. nov., from the South China Sea, which lives on crinoid hosts and exhibits a six‐armed body plan possibly indicating fissiparity. Its vertebral and arm plate structures enhance horizontal flexibility for grasping the host, and phylogenetic analysis based on ...
Zhang Z +5 more
europepmc +2 more sources
New articulated asteroids (Echinodermata, Asteroidea) and ophiuroids (Echinodermata, Ophiuroidea) from the Late Jurassic (Volgian / Tithonian) of central Spitsbergen [PDF]
European Journal of Taxonomy, 2018 The Late Jurassic–Early Cretaceous Slottsmøya Member of the Agardhfjellet Formation in central Spitsbergen has yielded two new species of asteroids and two species of ophiuroids, one of which is described as new.
Julie Rousseau +2 more
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Frontiers in Marine Science, 2021 This study analyzes the fauna composition of the community of brittle and sea stars associated with sponge aggregations located in Avilés Canyons System and El Cachucho, Marine Protected Area (MPA).
Maria Eugenia Manjón-Cabeza +7 more
doaj +1 more source
Contrasting cryptofaunal responses to seabird nutrient inputs illuminate coral reef productivity pathways. [PDF]
EcologyAbstract Nutrients moving across ecosystems can propagate through food webs via distinct trophic pathways. Their integration into food webs is often mediated by small, abundant taxa that channel subsidies from primary producers to higher trophic levels.
Jeannot LL +6 more
europepmc +2 more sources
Royal Society Open Science, 2021 Understanding of the evolutionary history of the ophiuroids, or brittle stars, is hampered by a patchy knowledge of the fossil record. Especially, the stem members of the living clades are poorly known, resulting in blurry concepts of the early clade ...
Ben Thuy +2 more
doaj +1 more source
Carrion-Eating by Ophiuroids [PDF]
Nature, 1959 OPHIUTROIDS are known1,2 to eat a wide range of food, including phytoplankton, zooplankton, polychaetes and detritus; carrion-eating can now be added to the list, for it has recently been observed in this laboratory on the part of Ophiocomina nigra (Abild.), Ophiothrix fragilis(Abild.), Ophiura texturata Lam. and O. abilda Forbes.
A. K. NAGABHUSHANAM, J. S. COLMAN
openaire +1 more source