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| Registros recuperados: 56 | |
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| Willenz, P.; Pomponi, S.A.. |
| A new coralline sponge, <i>Willardia caicosensis</i>, assigned to the family Timeidae, is described from the deep fore reef off the Turks & Caicos Islands, tropical western Atlantic Ocean, where it is common at depths ranging from 100 to 119 m. Individuals vary up to 15-20 cm in width. The relatively thin aragonitic skeleton is covered with delicate pillars up to + 1 mm. The living tissue is restricted to the spaces between pillars and a thin sheet lying above the calcareous skeleton. Exhalant canals converge upon regularly spaced central oscules on the sponge surface. Siliceous spicules include tylostyles and amphiasters which are secondarily embedded in the aragonitic moiety of the skeleton. In addition, ultrastructural characters of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coral; New genera; Sponges; Porifera [Sponges]; Timeidae. |
| Ano: 1996 |
URL: http://www.vliz.be/imisdocs/publications/303635.pdf |
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| Regalado, E.L.; Jiménez-Romero, C.; Genta-Jouve, G.; Tasdemir, D.; Amade, P.; Nogueiras, C.; Thomas, O.P.. |
| Seven novel steroid glycosides, acanthifoliosides A-F (1-6) and the methyl ester of 6 (7), were isolated from the marine sponge Pandaros acanthifolium as minor components. Acanthifoliosides are characterized by a rare C-15 and C-16 oxidized D ring which was previously found in saponins produced by starfishes. Very uncommon is the presence of additional sugar residues at C-15 or C-16. Their structures were determined on the basis of extensive spectroscopic analyses, including two-dimensional NMR and HRESIMS data. The absolute configurations of the aglycones were assigned by comparison between experimental and TDDFT calculated CD spectra of 1, whereas the absolute configurations of the monosaccharide units were determined by chiral GC analyses of the acid... |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/3866 |
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| Mora-Cristancho, J.; Zea, S.; Gil-Agudelo, D.. |
| Las superficies sumerigdas en el mar son densamente colonizadas por bacterias y sus interacciones, tales como la inhibición del crecimiento, son importantes para determinar el desarollo de comunidades bactarinas, como también de posteriores etapas de las macroepibiosis. Para determinar el potencial de interacción entre bactarias de las biopelículas de esponjas, se realizaron ensayos de actividad de inhibición in vitro de crecimiento entre cepas bacterianas aisladas de superficies con diferente grado de macroepibiosis, de las esponjas Apysina insularis (limpia), Aplysina lacunosa (con macroepibiosis) y de la superficie calcárea de la concha del molusco bivalvo Donax sp. El procentaje total de interacción antagónica entre estas cepas bacterianas fue del 64... |
| Tipo: Journal Contribution |
Palavras-chave: Epibiosis; Sponges; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3574 |
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| Soest, R.W.M. van; Hooper, J.N.A.; Beglinger, E.; Erpenbeck, D.. |
| Comparison of Sollasella digitata Lendenfeld, 1888, up until the present assigned to its own family Sollasellidae Lendenfeld, 1887 in the order Hadromerida, and Raspailopsis cervicornis Burton, 1959, assigned to Raspailiidae Nardo, 1833 in the order Poecilosclerida, leads to the conclusion that both should be considered congeneric and are best assigned to a single genus Sollasella. This conclusion is based on examination of habit and skeletal characters of the type material of S. digitata and both type and freshly collected material of S. cervicornis. The conclusion is strengthened by the discovery of a new species, Sollasella moretonensis n.sp. collected in North Australia (primarily in the northeastern coast, but also an isolated record from the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Sponges; Classification; Sollasellidae; Raspailiidae; Sollasella; Raspailopsis; Australia; Oman; 42.72. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/214536 |
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| Erpenbeck, D.; Hooper, J.N.A.; List-Armitage, S.E.; Degnan, B.M.; Wörheide, G.; Soest, R.W.M. van. |
| This is the second part of a revision and re-classification of the demosponge family Sollasellidae, and an example of a successful use of combined morphological and molecular data. Sollasella had been a poorly known, long forgotten taxon, placed incertae sedis in the order Hadromerida in the last major revision of the demosponges. It has recently been suggested to belong to Raspailiidae in the order Poecilosclerida due to striking morphological similarities. The present analysis verified this re-classification using molecular markers. Comparing 28S rDNA fragments of Sollasella cervicornis, a newly described species S. moretonensis and a representative set of raspailiid and hadromerid samples. In our analyses Sollasella clearly clusters inside the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Sponges; Classification; Raspailiidae; Sollasella; Raspailopsis; 28S rDNA; Molecular systematics; 42.72. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/226474 |
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| Le Norcy, Tiffany; Niemann, Hendrik; Proksch, Peter; Linossier, Isabelle; Vallee-rehel, Karine; Hellio, Claire; Fay, Fabienne. |
| Dibromohemibastadin-1 (DBHB) is an already known potent inhibitor of blue mussel phenoloxidase (which is a key enzyme involved in bioadhesion). Within this study, the potentiality of DBHB against microfouling has been investigated. The activity of DBHB was evaluated on key strains of bacteria and microalgae involved in marine biofilm formation and bioassays assessing impact on growth, adhesion and biofilm formation were used. To assess the efficiency of DBHB when included in a matrix, DBHB varnish was prepared and the anti-microfouling activity of coatings was assessed. Both in vitro and in situ immersions were carried out. Confocal Laser Scanning Microscopy (CLSM) was principally used to determine the biovolume and average thickness of biofilms developed... |
| Tipo: Text |
Palavras-chave: Antifouling; Biodegradable coating; Hemibastadin; Sponges; Marine bacteria; Microalgae. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00616/72812/72626.pdf |
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| Regalado, E.L.; Tasdemir, D.; Kaiser, M.; Cachet, N.; Amade, P.; Thomas, O.P.. |
| The chemical composition of the Caribbean sponge Pandaros acanthifolium was reinvestigated and led to the isolation of 12 new steroidal glycosides, namely, pandarosides E-J (1-6) and their methyl esters (7-12). Their structures were determined on the basis of extensive spectroscopic analyses, including two-dimensional NMR and HRESIMS data. Like the previously isolated pandarosides A-D (13-16), the new compounds 1-12 share an unusual oxidized D-ring and a cis C/D ring junction. The absolute configurations of the aglycones were assigned by interpretation of CD spectra, whereas the absolute configurations of the monosaccharide units were determined by chiral GC analyses of the acid methanolysates. The majority of the metabolites showed in Vitro activity... |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3863 |
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| González-Díaz, P.; Perera-Pérez, O.; Pérez-García, J. A.; Hernández-Fernández, L.. |
| La investigación se realizó en los meses de octubre de 2011 y marzo de 2012. A partir del análisis de imágenes satelitales se seleccionaron 41 sitios en el sector central del golfo de Ana María, región surcentral de Cuba. En dichos sitios se llevó a cabo el inventario de corales, gorgonias y esponjas. Para los corales, se analizó, además, el estado de salud. El inventario se realizó en los ecosistemas de manglar, pastizales y arrecifes de coral (biotopos de cabezos y fondos areno-rocosos). El número de especies encontradas de corales fue de 41; de gorgonias, 23 y de esponjas, 41. Los corales más abundantes fueron Porites astreoides, Millepora alcicornis, Siderastrea siderea, Siderastrea radians, Agaricia agaricites. La mayor biodiversidad se... |
| Tipo: Journal Contribution |
Palavras-chave: Coral; Sponges; Recruitment; Biodiversity. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4641 |
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| Regalado, E.L.; Laguna, A.; Mendiola, J.; Thomas, O.P.; Nogueiras, C.. |
| Bioguided fractionation of Agelas cerebrum crude extract resulted in isolation of four bromopyrrole and four bromopyrrole aminoimidazole alkaloids, identified as 5-bromopyrrole-2-carboxylic acid (1), 4-bromopyrrole-2-carboxylic acid (2), 3,4-bromopyrrole-2-carboxylic acid (3), 4,5-bromopyrrole-2-carboxylic acid (4), oroidin (5), bromoageliferin (6), dibromoageliferin (7) and dibromosceptrin (8) on the basis of spectroscopic data analyses (UV, IR, HRMS, 1D and 2D NMR) and comparison with literature data. This is the first report of compounds 2 and 3 in a marine sponge belonging to the Agelas genus and the first evidence of the presence of 1 from a natural source. |
| Tipo: Journal Contribution |
Palavras-chave: Alkaloids; Sponges; Chemistry; Chemistry; Alkaloids; Sponges; Http://aims.fao.org/aos/agrovoc/c_1522; Http://aims.fao.org/aos/agrovoc/c_269; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3862 |
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| Barnes, D.K.A.; Bell, J.J.. |
| Sponges assemblages were sampled in four coastal study regions (Malindi, Kenya; Quirimba Archipelago, northern Mozambique; Inhaca Island, Southern Mozambique and Anakao, Madagascar) in the west Indian Ocean. Sponge species were counted inmultiple 0.5m2 quadrats at depths of between 0 and 20m at a number of sites withinlocalitieswithineach region.Despite the relatively small areas sampled, sponge samples comprised a total of130 species and 70 genera of the classesDemospongiae and Calcarea. |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Taxonomy. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/538 |
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| Cathalot, Cecile; Van Oevelen, Dick; Cox, Tom J.s.; Kutti, Tina; Lavaleye, Marc S. S.; Duineveld, Gca; Meysman, Filip J. R.. |
| Cold-water coral reefs and adjacent sponge grounds are distributed widely in the deep ocean, where only a small fraction of the surface productivity reaches the seafloor as detritus. It remains elusive how these hotspots of biodiversity can thrive in such a food-limited environment, as data on energy flow and organic carbon utilization are critically lacking. Here we report in situ community respiration rates for cold-water coral and sponge ecosystems obtained by the non-invasive aquatic Eddy Correlation technique. Oxygen uptake rates over coral reefs and adjacent sponge grounds in the Træna Coral Field (Norway) were 9–20 times higher than those of the surrounding soft sediments. These high respiration rates indicate strong organic matter consumption, and... |
| Tipo: Text |
Palavras-chave: Deep-seaecosystems; Cold-watercorals; Sponges; Respiration; Energyflow. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00275/38574/37099.pdf |
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| Batista,Twiggy Cristina Alves; Volkmer-Ribeiro,Cecília. |
| An extensive survey for freshwater sponges was carried at the temporarely exposed rocky bottoms of river Corumbá at Goiás State and river Manso at Mato Grosso State. The exposure resulted from the closing of the dams for lake formation at the respective Hidreletric Power Plants. Drulia uruguayensis Bonetto & Ezcurra de Drago, 1968, Corvospongilla seckti Bonetto & Ezcurra de Drago, 1966 and Trochospongilla repens (Hinde, 1888) were seen to be common to both rivers. Eunapiusfragilis (Leidy, 1851), Oncosclera navicella (Carter, 1881) and O. petricola (Bonetto & Ezcurra de Drago, 1969) were yet found in river Manso and O. schubarti (Bonetto & Ezcurra de Drago, 1967) in river Corumbá. O. schubarti is redescribed and SEM... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sponges; Oncosclera schubarti; Neotropical; River; Benthic assemblages. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100010 |
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| Ben Mustapha, K.. |
| Le peuplement de démosponges des îles Kerkennah a été étudié notamment du point de vue de sa répartition systématique et comparé à d’autres peuplements de démosponges de l’étage infralittoral méditerranéen. La récolte a intéressé 111 individus à partir de 11 stations différentes situées sur les hauts fonds des îles Kerkennah à des profondeurs variants entre 0,5 et 12 m, principalement des stations d’herbiers à posidonies. Nous avons pu identifier 50 espèces différentes, parmi lesquelles 19 étaient signalées pour la première fois en Tunisie, et 2 étaient nouvelles pour la Méditerranée. Parmi ces 50 espèces, 8 seraient nouvelles pour la science: Timea sp1 ; Timea sp2 ; Batzella sp ; Clathria (Microciona) sp1 ; Clathria (Microciona) sp2 ; Clathria sp ;... |
| Tipo: Journal Contribution |
Palavras-chave: New records; Marine biology; Geographical distribution; Taxonomy; Size; Sponges; Marine biology; Sponges; Geographical distribution; Taxonomy. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/4208 |
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| Busutil, L.; Nuez-Hernández, D.; Pérez Angulo, A.. |
| Se establecieron 12 estaciones de muestreo en perfiles batimétricos (5, 10 y 15 m) de cinco sitios ubicados en los Bajos de Sancho Pardo, Archipiélago de Los Colorados, región noroccidental de Cuba. Se empleó el marco cuadrado de 1 m de lado como unidad de muestreo, el cual se colocó aleatoriamente en 30 posiciones por estación. Fueron identificadas 50 especies de esponjas de la clase Demospongiae, distribuidas en 33 géneros, 10 órdenes y 22 familias. En las estaciones más someras predominó la especie Cliona aprica, mientras que en las más profundas lo hicieron Aplysina cauliformis, A. fistularis forma insularis e Ircinia felix. La riqueza de especies fue mayor en las estaciones más profundas. El índice de contaminación, calculado a partir de las... |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Biodiversity; Abundance; Archipelagoes; Species diversity. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4171 |
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| Registros recuperados: 56 | |
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