Consulta: subjectFacets:"Ophiuroidea"
Registros recuperados: 8
Data/hora: 08/06/2024 18:45:50

Genetic data, reproduction season and reproductive strategy data support the existence of biological species in Ophioderma longicauda
Provedor de dados: 5
Autores: Weber, Alexandra Anh-thu; Stohr, Sabine; Chenuil, Anne.
Cryptic species are numerous in the marine environment. The brittle star Ophioderma longicauda is composed of six mitochondrial lineages, encompassing brooders, which form a monophyletic group, and broadcasters, from which the brooders are derived. To clarify the species limits within O. longicauda, we compared the reproductive status of the sympatric lineages L1 and L3 (defined after sequencing a portion of the mitochondrial gene COI) during the month of May in Greece. In addition, we genotyped a nuclear marker, intron i51. Each L3 female was brooding, whereas all L1 specimens displayed full gonads, suggesting temporal pre-zygotic isolation between brooders and broadcasters. Statistical differences were found among lineages in morphology and bathymetric...
Tipo: Text
Palavras-chave: Ophiuroidea; Espèces cryptiques; Espèce incubante; Sous-unité I de la cytochrome oxydase; EPIC; Ophiuroidea; Cryptic species; Brooding species; Cytochrome oxidase subunit I; EPIC.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00372/48271/48576.pdf

Résultats Biologiques de L'expédition Snellius. Echinodermata: Ophiuroidea I
Provedor de dados: 16
Autores: Guille, A.; Wolff, W.J.
During our studies of this first part of the brittle-stars collection of the Snellius Expedition (1929-1930) in Indonesia, 37 species were found. Among these, a new genus and a new species of Amphiurid, Paramphichondrius tetradontus, are described; Ophiothrix picteti Loriol is transferred from the subgenus Acanthophiothrix to Ophiothrix s.s.; 17 other species, either rare or of taxonomically confused status, are discussed, i.e., Astroceras elegans, Ophiocentrus koehleri and O. vexator, Macrophiothrix belli, M. longipeda, M. rhabdota, and M. sp. aff. variabilis, Ophiothrix contenta, O. savignyi and O. trilineata (with a new synonym: O. tristis), O. (Acanthophiothrix) armata, O. (A.) spinossissima, O. (Keystonea) martensi, O. (Placophiothrix) hybrida and O....
Tipo: Article / Letter to the editor
Palavras-chave: Echinodermata; Ophiuroidea; Taxonomy; Indonesia.; 42.72.
Ano: 1984
URL: http://www.repository.naturalis.nl/record/317834

Copepoda (Siphonostomatoida) associated with Ophiuroidea in Jamaica, Puerto Rico, and Barbados
Provedor de dados: 16
Autores: Humes, A.G.
Three new siphonostomatoid copepods are associated with Ophiuroidea in the tropical western Atlantic. Collocheres vervoorti spec. nov., from Ophiothrix angulata in Jamaica, has an elongate, gently tapered genital double-somite in the female and the second segment of leg 5 has a distal outer notch. Collocheres lunulifer spec. nov., an associate of Ophiothrix angulata and Ophiothrix suensonii in Barbados, has sclerotized lunules on the basis and first segment of the endopod of leg 1. Ophiurocheres bellulus gen. nov., spec, nov., living on Ophiomyxa flaccida in Puerto Rico, has the third segment of the exopod of leg 1 armed with 11,2,2 and the second segment of leg 5 bears 2 setae in the female and 3 setae in the male.
Tipo: Article / Letter to the editor
Palavras-chave: Copepoda; Siphonostomatoida; Ophiuroidea; Associates; Caribbean; West Indies.; 42.74.
Ano: 1998
URL: http://www.repository.naturalis.nl/record/317733

Late Cretaceous ophiuroids in the Binkhorst Collection at the Museum für Naturkunde, Berlin, reassessed
Provedor de dados: 16
Autores: Jagt, J.W.M.; Neumann, C.
A small lot of latest Cretaceous brittlestars from the Maastrichtian type area, contained in the Binkhorst [van den Binkhorst] Collection at the Museum für Naturkunde in Berlin, is restudied and, in part, illustrated for the first time. Presumably, these thirteen specimens represent only a portion of the ophiuroid material referred to in two papers by Binkhorst van den Binkhorst, both published in 1859, because all are assignable to two species which are common only in the Nekum and Meerssen members of the type Maastrichtian, namely Felderophiura vanderhami Jagt, 1991, and Ophiomusium lux Jagt &amp; Kutscher in Jagt, 2000. Brittlestar material from lower levels within the Maastricht Formation (i.e., Valkenburg, Gronsveld, Schiepersberg and Emael members)...
Tipo: Article / Letter to the editor
Palavras-chave: Echinodermata; Ophiuroidea; Late Cretaceous; Maastrichtian; The Netherlands; 38.22.
Ano: 2010
URL: http://www.repository.naturalis.nl/record/361977

Late Cretaceous-Early Palaeogene echinoderms and the K/T boundary in the southeast Netherlands and northeast Belgium —
Provedor de dados: 16
Autores: Jagt, J.W.M.; Kutscher, M.
The present paper is divided into two parts. In the first, all Campanian, Maastrichtian and Danian ophiuroids known to date from the extended type area of the Maastrichtian Stage, are described and illustrated. The geographic and stratigraphic distribution of this diverse echinoderm group are documented. A total of twenty-one genera (one of them new) and thirty-seven species (seven of them new) are recorded from the Campanian-Danian of Liège-Limburg and the Aachen area (Germany). The following taxa are new: Ophiocten? yvonnae sp. nov., Stegophiura? trispinosa sp. nov., Deckersamphiura inusitata gen. et sp. nov., Ophiarachna? martinblomi sp. nov., Ophiolepis? falsa sp. nov., Ophiomusium lux sp. nov., and Mesophiomusium decipiens gen. et sp. nov. Additional...
Tipo: Article / Letter to the editor
Palavras-chave: Echinodermata; Ophiuroidea; Late Cretaceous; Early Palaeogene; Taxonomy; Stratigraphy; 42.72; 38.22.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/219095

Associação entre Ophionereis reticulata (Say) (Ophiuroidea, Ophionereididae) e Malmgreniella variegata (Treadwell) (Polychaeta, Polynoidae) das praias de Salvador, Bahia, Brasil
Provedor de dados: 104
Autores: Santa-lsabel,Lêda Maria de; Cerqueira,Walter R. Pinto; Alves,Orane Falcão de Souza.
The occurrence and distribution records of the association between Ophionereis reticulata (Say) and Malmgreniella variegata (Treadwell) in Northeastem Brazil, and the redescription of M. variegata, are included.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ophiuroidea; Ophionereididae; Malmgreniella variegata; Polychaeta; Polynoidae.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000100013

Taxonomy of Ophiuroidea (Echinonermata) from the continental shelf and slope of the southern and southeastern Brazilian coast
Provedor de dados: 49
Autores: Borges,Michela; Monteiro,Ana Maria Gouveia; Amaral,Antonia Cecília Zacagnini.
This study focuses on the ophiuroids collected during the Programme of Evaluation of the Living Resources of the Exclusive Economic Zone for the Brazilian coast (REVIZEE), South Score/Benthos, in the states of Rio de Janeiro (Ilha Grande Bay), São Paulo, Paraná, Santa Catarina and Rio Grande do Sul (Tramandaí) (24° 07,113' S and 29° 48,500' S; and 43° 46,759' W and 49° 06,800' W). Samples were collected on the continental shelf and slope (60-810 m) using the following equipment: van Veen, box corer and a rectangular dredge. Individuals were identified, measured and photo-graphed under a stereomicroscope and a scanning electron microscope. Growth series of the species that contributed with more than 10 individuals were analysed. A total of 5044 individuals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomy; Ophiuroidea; Geographical distribution; Bathymetric distribution; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000200010

Annotated and illustrated list of echinoderms collected during the Colombian scientific expeditions to the Antarctica (2016-2019)
Provedor de dados: 50
Autores: Borrero-Pérez,Giomar H.; Yepes-Gaurisas,Daniela.
ABSTRACT In order to contribute to the base line of knowledge that is being built of the Gerlache Strait and the adjacent areas, the echinoderms collected during the Scientific Expeditions from Colombia to Antarctica carried out between 2016 and 2019 as part of the project “Biodiversity and oceanographic conditions of the Gerlache Strait, Biogerlache-Antártica” are presented. Eleven stations between 54 and 523 m deep were sampled, using sediment dredgers that captured incidentally some individuals from the mega and macro-epifauna, which were separated, reviewed and identified. Twentynine (29) individuals were obtained in five of the sampled stations, belonging to 13 morphotypes. Ophiuroidea was the richest class (five morphotypes), followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crinoidea; Asteroidea; Ophiuroidea; Holothuroidea; Biogerlache project.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300085