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| Registros recuperados: 27 | |
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| Blanchet, Aline; Chevalier, Claire; Gaffet, Jean-dominique; Hamon, Dominique. |
| Following a preliminary mapping survey using a combination of acoustic techniques, spatial patterns of sedimentologic and biological characteristics of the Bay of Douarnenez were studied in 2001 from a series of grab samples and underwater video recording aiming at calibrate the acoustic facies of the bottom and at characterized them from a biological point of view. Results obtained from community structure analysis showed that four principal ecological groups dominate : The coarse sands community with Branchiostoma lanceolatum, Glycymeris glycymeris and Glycera lapidum, the fine to medium sand community with Nephtys cirrosa, Ophelia borealis and Gastrosaccus spinifer, the mixed muddy sand and gravel community with Amphiura filiformis, Edwardsia sp. and... |
| Tipo: Text |
Palavras-chave: Cartographie; Peuplements; Baie de Douamenez; Zoo-benthos; Analyses multivariées; Vidéo; Échinodermes.; Cartography; Comrnunities; Bay of Douamenez; Zoo-benthos; Multivariate analysis; Video; Echinodermata. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/00431/54254/56103.pdf |
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| Hemery, Lenaig G.; Ameziane, Nadia; Eleaume, Marc. |
| This circumpolar dataset of the comatulid (Echinodermata: Crinoidea) Promachocrinus kerguelensis (Carpenter, 1888) from the Southern Ocean, documents biodiversity associated with the specimens sequenced in Hemery et al. (2012). The aim of Hemery et al. (2012) paper was to use phylogeographic and phylogenetic tools to assess the genetic diversity, demographic history and evolutionary relationships of this very common and abundant comatulid, in the context of the glacial history of the Antarctic and Sub-Antarctic shelves (Thatje et al. 2005, 2008). Over one thousand three hundred specimens (1307) used in this study were collected during seventeen cruises from 1996 to 2010, in eight regions of the Southern Ocean: Kerguelen Plateau, Davis Sea, Dumont d'Urville... |
| Tipo: Text |
Palavras-chave: Antarctica; Crinoidea; Cytochrome Oxydase subunit I; Echinodermata; Phylogeography; Promachocrinus; Southern Ocean; Sub-Antarctic. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00296/40758/39749.pdf |
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| Weber, Alexandra At; Hugall, Andrew F; O’hara, Timothy D. |
| The deep ocean is the largest biome on Earth and yet it is among the least studied environments of our planet. Life at great depths requires several specific adaptations; however, their molecular mechanisms remain understudied. We examined patterns of positive selection in 416 genes from four brittle star (Ophiuroidea) families displaying replicated events of deep-sea colonization (288 individuals from 216 species). We found consistent signatures of molecular convergence in functions related to protein biogenesis, including protein folding and translation. Five genes were recurrently positively selected, including chaperonin-containing TCP-1 subunit α (CCTα), which is essential for protein folding. Molecular convergence was detected at the functional and... |
| Tipo: Text |
Palavras-chave: Echinodermata; TC P-1; Protein folding; Positive selection; Protein stability; Pressure adaptation. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00659/77136/78452.pdf |
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| Alves,Orane Falcão de Souza; Cerqueira,Walter Ramos Pinto. |
| This paper presents 28 species of Echinoderms collected on 5 beaches of Salvador (12º54' to 13º01' S and 38º26' to 38º33' W), Brazil, which are distributed in 19 families. Ophiuroidea represented 53,6% of the collected species, followed by Echinoidea (28,6%), Asteroidea (7,1%), Holothuroidea (7,1%), and Crinoidea (3,6%). Ophiuroidea and Echinoidea were the most frequent groups, occurring at all the studied beaches while Crinoidea occurred only on 20% of them. Most of the species are characterized as belonging to the tropical warm waters, some to the shallow coastal areas and some having a broad bathymetric distribution. The richness of species values on beaches ranged from 7 to 24, at Itapua Beach, and from 2 to 14 among different kinds of habitats, where... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Echinodermata; Beaches; Salvador; Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200024 |
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| González G,Dunia N; Solano P,Oscar D; Navas S,Gabriel R. |
| Se listan, diagnostican e ilustran 22 especies de equinodermos colectadas en 21 arrastres con red demersal realizados desde Cartagena hasta el Golfo de Urabá, entre 30 y 380 m de profundidad, por la expedición CIOH-INVEMAR-SMITHSONIAN en 1995. Las especies corresponden a dos crinoideos, siete asteroideos, cinco ofiuroideos, cuatro equinoideos y cuatro holoturoideos. De estas Astropecten nitidus Verrill, Plutonaster agassizi agassizi (Verrill), Tethyaster grandis (Verrill) y Leptopentacta deichmannae Domantay son primeros registros para el Mar Caribe, y Astropecten alligator Perrier, Anthenoides piercei Perrier, Amphiodia atra (Stimpson), Amphilimna olivacea (Lyman), Ophiomusium acuferum Lyman, Araeosoma fenestratum (Wyville - Thomson) y Molpadia parva... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Echinodermata; Taxonomía; Caribe; Colombia. |
| Ano: 2002 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612002000100007 |
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| 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 & 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 |
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| 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 |
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| Jagt, J.W.M.. |
| All Campanian, Maastrichtian and Danian echinoids known to date from the extended type area of the Maastrichtian Stage are listed and, with a few exceptions, also illustrated. The geographic and stratigraphic distribution of these echinoderms are documented. A total of 55 (sub)genera and 119 (sub)species (inclusive of formae), two of which are new, are recognised. A number of taxa are reassigned, while others have to remain in open nomenclature for the time being. Recorded for the first time from the area are representatives of Hagenowia and Zeuglopleurus, as well as juvenile specimens of Hemipneustes striatoradiatus. Cidaris gigas (= Temnocidaris (Stereocidaris) gigas) is accepted as a valid species. The name Cyphosoma rutoti is shown to be based on the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Echinodermata; Echinoidea; Late Cretaceous; Early Palaeogene; Taxonomy; Stratigraphy; 42.72; 38.22. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/219114 |
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| Jagt, J.W.M.. |
| All Campanian, Maastrichtian and Danian asteroids known to date from the extended type area of the Maastrichtian Stage, are described and illustrated. The geographic and stratigraphic distribution are documented. Eighteen genera (one of them new) and at least sixty-four species (eight of them new) are listed: Astropecten? sp. nov., astropectinid sp. nov., Coulonia? sp. nov., Lophidiaster? gr. punctatus/ postornatus, L. pygmaeus Spencer, 1913, Aldebarania sp. nov., Astropectinidae indet., ctenodiscid? indet., benthopectinid sp. 1 (? spp.), benthopectinid sp. 2, Metopaster alexiae sp. nov., M. aff. carinatus Brünnich Nielsen, 1943, M. continuus sp. nov., M. decipiens Spencer, 1913, M. kagstrupensis Brünnich Nielsen, 1943, M. lisannae sp. nov., M. miriamae... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Echinodermata; Asteroidea; Late Cretaceous; Early Palaeogene; Taxonomy; Stratigraphy; 42.72; 38.22. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/219134 |
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| Jagt, J.W.M.. |
| The palaeobiology of echinoderms occurring in the Meerssen and Geulhem members is discussed and changes in diversity across the K/T boundary are documented. Using literature data on the ecology of extant faunas, the various echinoderm groups are considered. Naturally, such data can only be applied with due caution to fossil forms, whose skeletal morphology is often incompletely known. This holds especially true for asteroids, ophiuroids, and crinoids, which, upon death, rapidly disintegrate into jumbles of dissociated ossicles. Bioturbation, scavenging, and current winnowing all contribute to blurring the picture still further. However, data on extant forms do allow a preliminary subdivision of fossil species into various ecological groups, which are... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Echinodermata; Late Cretaceous; Early Palaeogene; Palaeobiology; K/T boundary; Extinction; 42.72; 38.22. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/219135 |
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| Jagt, J.W.M.. |
| All Campanian, Maastrichtian and Danian articulate (cladid) crinoids known to date from the extendedtype area of the Maastrichtian Stage, are described and illustrated. The geographic and stratigraphicdistribution of this unexpectedly diverse echinoderm group are documented. A total of twentygenera (three of them new) and thirty-six species (six of them new) are defined: Austinocrinus bicoronatus(von Hagenow, 1840), ‘Isocrinus’ sp., ‘I.’ lanceolatus (Roemer, 1840)?, Isselicrinus buchii (Roemer,1840), Praeisselicrinus? limburgicus (Rasmussen, 1961), Nielsenicrinus agassizii (von Hagenow, 1840) (=‘Pentacrinites’ kloedeni von Hagenow, 1840), N. ewaldi sp. nov., Jaekelometra gr. belgica (Jaekel, 1902), J.gr. concava (Schlüter, 1878) (= J. columnaris Gislén,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Echinodermata; Crinoidea; Late Cretaceous; Early Palaeogene; Taxonomy; Stratigraphy; 42.77; 38.22. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/218997 |
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| Registros recuperados: 27 | |
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