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| Levi, Claude; Vacelet, Jean. |
| Thanks to the wonderful work of Topsent, most of the eastern Atlantic sponge fauna, from the North of France to the Isles of the Cape Verde, is now known. Most of this knowledge is based on the determination of some important collections gathered during the cruises of the "Hirondelle" and the "Princesse Alice" as well as those of the "Porcupine", the "Caudan" and of some vessels belonging to the Irish fisheries services.If the sponges from the Azores Islands are well known, it does not go the same for those dwelling off the French and Spanish coasts, and more especially those living in the Bay of Biscay. The collection of the Fisheries institute is made up, for the most part, of specimens from the Azores Islands and the Spanish coasts. It was gathered by... |
| Tipo: Text |
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| Ano: 1958 |
URL: http://archimer.ifremer.fr/doc/1958/publication-4599.pdf |
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| Dupont, Samuel; Carre-mlouka, Alyssa; Domart-coulon, Isabelle; Vacelet, Jean; Bourguet-kondracki, Marie-lise. |
| Combining culture-dependent and independent approaches, we investigated for the first time the cultivable fraction of the prokaryotic community associated with the carnivorous sponge Asbestopluma hypogea. The heterotrophic prokaryotes isolated from this tiny sponge were compared between specimens freshly collected from cave and maintained in aquarium. Overall, 67 isolates obtained in pure culture were phylogenetically affiliated to the bacterial phyla Proteobacteria, Bacteroidetes, Actinobacteria, and Firmicutes. This cultivable diversity was lower than the prokaryotic diversity obtained by previous pyrosequencing study and comparable to that of another Mediterranean demosponge, the filter-feeding Phorbas tenacior. Furthermore, using fluorescence in situ... |
| Tipo: Text |
Palavras-chave: Porifera; Asbestopluma hypogea; Carnivorous sponge; Symbiosis; Microbiology; Biologic activities. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00372/48273/48572.pdf |
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| Dupont, Samuel; Corre, Erwan; Li, Yanyan; Vacelet, Jean; Bourguet-kondracki, Marie-lise. |
| Using 454 pyrosequencing, we characterized for the first time the associated microbial community of the deep-sea carnivorous Demosponge Asbestopluma hypogea (Cladorhizidae). Targeting the 16S rRNA gene V3 and V6 hypervariable regions, we compared the diversity and composition of associated microbes of two individual sponges of A.hypogea freshly collected in the cave with surrounding seawater and with one sponge sample maintained 1year in an aquarium after collection. With more than 22961 high quality sequences from sponge samples, representing c. 800 operational taxonomic units per sponge sample at 97% sequence similarities, the phylogenetic affiliation of A.hypogea-associated microbes was assigned to 20 bacterial and two archaeal phyla, distributed into... |
| Tipo: Text |
Palavras-chave: Asbestopluma hypogea; Carnivorous sponge; Cladorhizidae; Microbial diversity; Microscopic studies; Pyrosequencing 454 amplicons. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00372/48277/48534.pdf |
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| Vacelet, Jean. |
| The four species studied in this note come from very different locations in the Mediterranean Sea, either from the eastern part (Cape Matapan and Kastelorizo in Greece) or from the western part (off the coasts of Algeria and the Alboran Sea) of the sea. Two species were new and two had never been observed before in the Mediterranean Sea. These sponges are part of the large collection of sponges sampled on board the "Président-Théodore-Tissier" and the "Calypso" in the Mediterranean Sea. These collections probably harbour other interesting species, but these four sponges seemed quite particular in several respects and thereby warranted immediate study. |
| Tipo: Text |
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| Ano: 1961 |
URL: http://archimer.ifremer.fr/doc/1961/publication-4262.pdf |
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| Gazave, Eve; Lavrov, Dennis V.; Cabrol, Jory; Renard, Emmanuelle; Rocher, Caroline; Vacelet, Jean; Adamska, Maja; Borchiellini, Carole; Ereskovsky, Alexander V.. |
| The family Oscarellidae is one of the two families in the class Homoscleromorpha (phylum Porifera) and is characterized by the absence of a skeleton and the presence of a specific mitochondrial gene, tatC. This family currently encompasses sponges in two genera: Oscarella with 17 described species and Pseudocorticium with one described species. Although sponges in this group are relatively well-studied, phylogenetic relationships among members of Oscarellidae and the validity of genus Pseudocorticium remain open questions. Here we present a phylogenetic analysis of Oscarellidae using four markers (18S rDNA, 28S rDNA, atp6, tatC), and argue that it should become a mono-generic family, with Pseudocorticium being synonymized with Oscarella, and with the... |
| Tipo: Text |
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| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00372/48285/48466.pdf |
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| Michez, Noemie; Fourt, Maia; Aish, Annabelle; Bellan, Gérard; Bellan Santini, Denise; Chevaldonne, Pierre; Fabri, Marie-claire; Goujard, Adrien; Harmelin, Jean-georges; Labrune, Celine; Pergent, Gerard; Sartoretto, Stephane; Vacelet, Jean; Verlaque, Marc. |
| Suite à l’acquisition de nouvelles informations sur les habitats marins méditerranéens, une mise à jour du référentiel national était nécessaire pour qu’il soit le reflet des connaissances actuelles. Ces nouvelles informations proviennent principalement de deux campagnes d’exploration des roches profondes et des canyons méditerranéens appelées MEDSEACAN et CORSEACAN, de CARTHAM (Cartographie des Habitats Marins) – deux programmes pilotés par l’Agence des Aires Marines Protégées – ainsi que de propositions émanant directement de la communauté scientifique. En collaboration avec les experts scientifiques benthologues, ces nouvelles observations ont été confrontées à la typologie (Michez et al., 2011) et des modifications et compléments ont été décidés. Ce... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00272/38315/36556.pdf |
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| Vacelet, Jean; Cardenas, Paco. |
| Discorhabdella pseudaster n. sp. is an incrusting sponge from the upper bathyal zone of the 'Banc du Geyser', north of Madagascar, Mozambique Channel This new species is described only from a single specimen but it is remarkable by the presence of spicules similar to euasters, a type of microsclere unknown in Poecilosclerida. These spicules are in fact a new example of homoplasy, being derivatives of the typical Discorhabdella pseudoastrose acanthostyles, which are here reduced to the aster-like tyles. The isochelae with a large lamella on the shaft are also quite unique in Poeciloclerida. |
| Tipo: Text |
Palavras-chave: Porifera; New species; Madagascar; Bathyal; Homoplasy. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00688/79995/82965.pdf |
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