Results 91 to 100 of about 1,682 (210)

Density fluctuations of the ophiuroids Ophiothrix fragilis and Ophiocomina nigra in the Bay of Douarnenez, Brittany, France

, 2013
International audiencen the Bay of Douarnenez, in a reference area surveyed for echinoderms, the relative abundance of epifaunal ophiuroids (Ophiothrix fragilis and Ophiocomina nigra) was estimated by dredging and video surveys.
Guillou, Monique, Blanchet-Aurigny, Aline, Le Goaster, Edouard   +2 more
core   +1 more source

A taxonomic guide to the brittle-stars (Echinodermata, Ophiuroidea) from the State of Paraíba continental shelf, Northeastern Brazil

ZooKeys, 2013
We provide the first annotated checklist of ophiuroids from the continental shelf of the State of Paraíba, northeastern Brazil. Identification keys and taxonomic diagnoses for 23 species, belonging to 14 genera and 8 families, are provided.
Anne Gondim, Carmen Alonso, Thelma Lúcia Pereira Dias, Cynthia Lara de Castro Manso, Martin Lindsey Christoffersen   +4 more
doaj   +1 more source

On the composition of sulfated polyhydroxysteroids in some ophiuroids and the structure determination of six new constituents

, 1995
Nine ophiuroid species from different geographical areas have been analyzed for their polar steroid content. Six new sulfated polyhydroxysteroids have been isolated, together with six known compounds of this type previously reported from brittle scars ...
RICCIO, Raffaele, Maria Valeria D' Auria, Riccio R., ZAMPELLA, ANGELA, Gomez Paloma L., D'AURIA, MARIA VALERIA, Luigi Minale, Angela Zampella, GOMEZ PALOMA, Luigi, Minale L.   +9 more
core   +1 more source

A New Steroidal Glycoside Granulatoside C from the Starfish , Unexpectedly Combining Structural Features of Polar Steroids from Several Different Marine Invertebrate Phyla

Natural Product Communications, 2017
A new unique steroidal glycoside, granulatoside C (1), was isolated from the ethanol extract of the starfish Choriaster granulatus. The structure of 1 was elucidated by extensive NMR and ESI-MS techniques as (20 R )-16,21- O -di-(P-D-fucopyranosyl)-24 ...
Natalia V. Ivanchina, Timofey V. Malyarenko, Alla A. Kicha, Anatoly I. Kalinovsky, Pavel S. Dmitrenok, Valentin A. Stonik   +5 more
doaj   +1 more source

Non-destructive morphological observations of the fleshy brittle star, Asteronyx loveni using micro-computed tomography (Echinodermata, Ophiuroidea, Euryalida)

ZooKeys, 2017
The first morphological observation of a euryalid brittle star, Asteronyx loveni, using non-destructive X-ray micro-computed tomography (µCT) was performed.
Massanori Okanishi, Toshihiko Fujita, Yu Maekawa, Takenori Sasaki   +3 more
doaj   +3 more sources

Size–frequency dynamics of NE Pacific abyssal ophiuroids (Echinodermata: Ophiuroidea)

, 2008
The 17-year time-series study at Station M in the NE Pacific has provided one of the longest datasets on deep-sea ophiuroids to date. Station M is an abyssal site characterized by low topographical relief and seasonal and interannual variation in surface-
Bailey, David M., Booth, J.A.T., Lovell, L.L., Smith Jr, K.L., Lovell, Lawrence L., Bailey, D.M., Booth, J. Ashley T., Ruhl, Henry A., Smith, Kenneth L., Ruhl, H.A.   +9 more
core   +1 more source

Echinodermata, Ophiuroidea, Gorgonocephalus Leach, 1815: First report of the genus for the Brazilian continental margin

Check List, 2010
The Gorgonocephalidae includes 38 genera, five of them reported for Brazilian waters. Gorgonocephalus chilensishas a wide distribution throughout Antartica and Subantartican regions and its northern limit was restricted to the coast ofUruguay.
Barboza, C. A. M., Mendes, F. M., Dalben, A., Tommasi, L. R.   +3 more
doaj  

Post-larval development in deep-sea echinoderms

, 1998
The post-larval phase is an essential period in the life history of marine invertebrates; vulnerable to high mortality, it ultimately influences the distribution and abundance of adult populations.
Sumida, P.Y.G.
core   +1 more source

Stable isotopes reveal a potential kleptoparasitic relationship between an ophiuroid (Ophiocnemis marmorata) and the semaeostome jellyfish, Aurelia aurita

, 2017
A diverse suite of fish and invertebrates form commensal and parasitic relationships with scyphozoan jellyfish. Associations between ophiuroids and medusae, however, are rare.
Ingram, Brooke, Pitt, Kylie, Ingram, Brooke A, Barnes, Peter, Pitt, Kylie A   +4 more
core   +1 more source

Gene expression and regeneration in ophiuroids: A study of transcriptional activity and regeneration in the temperate Amphiura filiformis and Antarctic Ophionotus victoriae

, 2012
Regeneration, in which lost or damaged tissues are re-grown, is a common phenomenon amongst animals and especially so within the ophiuroids (brittle stars) of the phylum echinodermata.
Burns, Gavin,
core