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| Registros recuperados: 55 | |
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| Soest, R.W.M van; Cleary, D.F.R.; Kluijver, M.J. de; Lavaleye, M.S.S.; Maier, C.; Duy, F.C. van. |
| Sponge diversity and community composition in bathyal cold water coral reefs (CWRs) were examined at 500-900 m depth on the southeastern slopes of Rockall Bank and the northwestern slope of Porcupine Bank, to the west of Ireland in 2004 and 2005 with boxcores. A total of 104 boxcore samples, supplemented with 10 trawl/dredge attempts, were analyzed for the presence and abundance of sponges, using microscopical examination of (sub)samples of collected coral branches, and semi-quantitative macroscopic examination. Approximate minimum size of identified and counted sponge individuals was 1 mm. Literature data were added to the Porcupine Bank results to compensate for a less intensive sampling program in that location. Species richness and abundance were... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coldwater; Multivariate analysis; North Atlantic; Ordination; PCA; Porifera; RDA; 42.72. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/226534 |
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| Lerner,Cléa; Hajdu,Eduardo. |
| Two new Mycale (Naviculiiia) Gray, 1867 are described, M. (N.) arcuiris sp. n. and M. (N.)purpurata sp. n., from the Paulista Biogeographic Province (Southwestern Atlantic). They both occur in the São Sebastião Channel area (São Paulo stale coast), the former extending its known distribution to "Arvoredo Marine Biological Reserve" (Santa Catarina state coast). The new species are sibling and differ from each other by a series of very small traits, the most notorious being live-color: yellow, orange, green, white, grey and beige, always light, in M. (N.) arcuiris sp. n. and bordeaux in M. (N.) purpúrala sp. n. Both species are compared with other known M. (Naviculiiia). Mycale (Aegogropila) henlscheli Sim & Lee, 2001 is transferred to subgenus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Taxonomy; Southwestern Atlantic; Mycale; Naviculiiia. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100009 |
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| Carrera,Marcelo G; Ortega,Gladys. |
| A nearly complete specimen of a hexactinellid sponge has been recovered from Lower Ordovician siliciclastic rocks of the Argentine Precordillera. The material was collected in the upper member of the Los Azules Formation (Sandbian). A new species of the genus Cyathophycus Walcott, C. extendis, is erected. The taxonomic position of the genus is still controversial. Their recent assignment to the family Dictyospongiidae is discussed; Cyathophycus has been considered as a transitional form between protospongiids with simple regular skeletons and dictyospongiids with more complex skeletons. Previous studies have stated that hexactinellid evolution through the Cambrian-Ordovician interval, like other sponge groups at this time, appears to have been based on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Hexactinellida; Ordovician; Argentina. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142009000300001 |
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| Custódio,Márcio Reis; Hajdu,Eduardo. |
| As esponjas (Filo Porifera) são um dos metazoários mais antigos existentes, mas ainda facilmente encontradas em uma grande variedade de ambientes aquáticos. São um componente fundamental em diversos ecossistemas, influenciando diretamente a qualidade da água em seus habitats. Em tempos recentes são um dos grupos que mais fornece novas moléculas bioativas ou com estruturas incomuns. No entanto, são historicamente considerados um grupo de taxonomia complexa e ainda são comuns discussões acerca da sistemática ao nível de ordens ou mesmo da monofilia do grupo. Este cenário começou a ser alterado de forma marcante na última década, a partir de iniciativas multinacionais voltadas a fornecer uma base taxonômica mais sólida. No Brasil, este processo foi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Biota paulista; Programa BIOTA/FAPESP. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000500015 |
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| Mothes,Beatriz; Campos,Maurício; Lerner,Cléa; Carraro,João Luís; Parra-Velandia,Fernando José. |
| This work provides new information on agelasid sponges found on the continental shelf off northern Brazil. Agelas sceptrum (Lamarck, 1815) and Agelas wiedenmayeri Alcolado, 1984 have their first record for the Brazilian coast. Agelas dispar Duchassaing & Michelotti, 1864 and Agelas schmidti Wilson, 1902, previously recorded from Brazil, are cited for the first time off the mouth of the Amazon River. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Agelas; Off Amazon River mouth; Brazil; Taxonomy. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000300009 |
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| Araya-Vargas,Alexander; Busutil,Linnet; García-Rojas,Andrea; Pereira-Chaves,José Miguel; Piedra-Castro,Liliana. |
| ABSTRACT Marine sponges fulfill many critical functions to coral reefs. In turn, variations in the community structure of the poriferans may indicate changes in the environmental conditions of the ecosystems where they live. However, their study has been scarce in the Caribbean of Costa Rica, mainly in the ecological field. Therefore, the community structure of these organisms was evaluated in four reef patches (Perezoso, Pequeño, Coral Garden, and the 0.36) and it was determined whether it could be explained by sedimentation, substrate, and depth. Relative abundance (RA) and relative coverage (RC) for each species, sponge density, and diversity indices (species richness, Shannon heterogeneity, Pielou's evenness, and Simpson's dominance) were calculated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Coral reef; Sedimentation; Substrate; Depth. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000100039 |
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| Valderrama,Diego; Zea,Sven. |
| El costado noroccidental del Golfo de Urabá en el sur del Mar Caribe alberga variadas zonas coralinas sometidas a condiciones de alta turbulencia y salinidad y turbidez fluctuantes. Allí se estudió la composición y densidad de esponjas marinas (Porifera) y se analizó su relación con factores físicos y características estructurales de las zonas coralinas. En total, 65 especies de la clase Demospongiae y una especie de la clase Calcarea fueron registradas dentro de transectos de banda (20 m²) dispuestos en 11 estaciones entre 1 y 17 m de profundidad. La densidad de esponjas en el Urabá tendió a ser superior a la encontrada en otras áreas de condiciones óptimas para el desarrollo arrecifal (ej. Atolones remotos como Roncador, Serrana y Quitasueño, Caribe... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Esponjas; Porifera; Distribución; Baja salinidad; Alta turbidez. |
| Ano: 2003 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612003000100003 |
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| Silva,Jaime Andrés; Zed,Sven. |
| ABSTRACT Sponges (Porifera) are important constituents of littoral habitats in the Caribbean Sea. The knowledge of their biodiversity is fundamental to carry out ecological, managerial and utilitarian research. Their taxonomy is complex, but in the Caribbean in general, and in Colombia in particular, there are important advances. With this work, some sponge species of the genera Petrosia and Xestospongia are recorded and described for the first time from the Colombian Caribbean. Petrosia (Strongylophora) davilai, Xestospongia arenosa, Xestospongia deweerdtae and Xestospongia purpurea are described and illustrated. The number of records of Petrosia and Xestospongia for the Colombian Caribbean are now three and four species, respectively. In all species, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Caribbean; Colombia; Taxonomy; New records. |
| Ano: 2017 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100113 |
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| Laport,Marinella Silva; Pontes,Paula Veronesi Marinho; Santos,Daniela Silva dos; Santos-Gandelman,Juliana de Fátima; Muricy,Guilherme; Bauwens,Mathieu; Giambiagi-deMarval,Marcia; George,Isabelle. |
| ABSTRACT Although antibiotic-resistant pathogens pose a significant threat to human health, the environmental reservoirs of the resistance determinants are still poorly understood. This study reports the detection of resistance genes (ermB, mecA, mupA, qnrA, qnrB and tetL) to antibiotics among certain culturable and unculturable bacteria associated with the marine sponge Petromica citrina. The antimicrobial activities elicited by P. citrina and its associated bacteria are also described. The results indicate that the marine environment could play an important role in the development of antibiotic resistance and the dissemination of resistance genes among bacteria. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbes; Natural hotspots; Porifera; Resistance; Rio de Janeiro. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300617 |
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| Registros recuperados: 55 | |
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