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| Lelievre, Yann; Sarrazin, Jozee; Marticorena, Julien; Schaal, Gauthier; Day, Thomas; Legendre, Pierre; Hourdez, Stephane; Matabos, Marjolaine. |
| Hydrothermal vent sites along the Juan de Fuca Ridge in the north-east Pacific host dense populations of Ridgeia piscesae tubeworms that promote habitat heterogeneity and local diversity. A detailed description of the biodiversity and community structure is needed to help understand the ecological processes that underlie the distribution and dynamics of deep-sea vent communities. Here, we assessed the composition, abundance, diversity and trophic structure of six tubeworm samples, corresponding to different successional stages, collected on the Grotto hydrothermal edifice (Main Endeavour Field, Juan de Fuca Ridge) at 2196 m depth. Including R. piscesae, a total of 36 macrofaunal taxa were identified to the species level. Although polychaetes made up the... |
| Tipo: Text |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00439/55083/56515.pdf |
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| Borda, Elizabeth; Kudenov, Jerry D.; Chevaldonne, Pierre; Blake, James A.; Desbruyeres, Damien; Fabri, Marie-claire; Hourdez, Stephane; Pleijel, Fredrik; Shank, Timothy M.; Wilson, Nerida G.; Schulze, Anja; Rouse, Greg W.. |
| Since its description from the Galapagos Rift in the mid-1980s, Archinome rosacea has been recorded at hydrothermal vents in the Pacific, Atlantic and Indian Oceans. Only recently was a second species described from the Pacific Antarctic Ridge. We inferred the identities and evolutionary relationships of Archinome representatives sampled from across the hydrothermal vent range of the genus, which is now extended to cold methane seeps. Species delimitation using mitochondrial cytochrome c oxidase subunit I (COI) recovered up to six lineages, whereas concatenated datasets (COI, 16S, 28S and ITS1) supported only four or five of these as clades. Morphological approaches alone were inconclusive to verify the identities of species owing to the lack of discrete... |
| Tipo: Text |
Palavras-chave: Deep sea; Hydrothermal vents; Cold methane seeps; Cryptic species; Polychaete. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00157/26814/24961.pdf |
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| Teixeira, Sara; Olu, Karine; Decker, Carole; Cunha, Regina L.; Fuchs, Sandra; Hourdez, Stephane; Serrao, Ester A.; Arnaud-haond, Sophie. |
| Chemosynthetic ecosystems are distributed worldwide in fragmented habitats harbouring seemingly highly specialized communities. Yet, shared taxa have been reported from highly distant chemosynthetic communities. These habitats are distributed in distinct biogeographical regions, one of these being the so-called Atlantic Equatorial Belt (AEB). Here, we combined genetic data (COI) from several taxa to assess the possible existence of cryptic or synonymous species and to detect the possible occurrence of contemporary gene flow among populations of chemosynthetic species located on both sides of the Atlantic. Several Evolutionary Significant Units (ESUs) of Alvinocarididae shrimp and Vesicomyidae bivalves were found to be shared across seeps of the AEB. Some... |
| Tipo: Text |
Palavras-chave: Atlantic equatorial belt; Chemosynthetic habitats; Deep-sea connectivity; Endemic bivalves; Endemic shrimp; Genetic diversity; Microsatellite markers; Mitochondrial COI gene. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00157/26789/24950.pdf |
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| Gaill, Francoise; Felbeck, Horst; Desbruyeres, Daniel; Lallier, Francois; Toulmond, A.; Alayse, Anne-marie; Briand, Patrick; Brulport, Jean-pierre; Caprais, Jean-claude; Chevaldonne, P.; Coail, Jean-yves; Cosson, R.; Crassous, Philippe; Delachambre, J.; Durif, C.; Echardour, L.; Herve, G.; Hourdez, Stephane; Jollivet, D.; Kerdoncuff, Jacques; Khripounoff, Alexis; Lechaire, J.p.; Pruski, Audrey; Ravaux, Juliette; Sarradin, Pierre-marie; Shillito, Bruce; Toullec, J.y.; Arndt, C.; Fisher, C.; Lutz, Richard; Childress, J.. |
| Tipo: Text |
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| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00179/29003/27431.pdf |
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| Samadi, Sarah; Puillandre, Nicolas; Pante, Eric; Boisselier, Marie-catherine; Corbari, Laure; Chen, Wei-jen; Maestrati, Philippe; Mana, Ralph; Thubaut, Justine; Zuccon, Dario; Hourdez, Stephane. |
| The deep-sea part of the ‘Papua Niugini Biodiversity Expedition’ surveyed the deep-sea environments along the coasts of New Guinea Island in the Bismarck Sea, from the Vitiaz Strait to the border between Papua New Guinea (PNG) and Irian Jaya. This expedition was a follow-up of the BIOPAPUA cruise (2010) that gave some of the first insights into the diversity of the deep-sea fauna of the Bismarck and Solomon Seas for environments other than deep-sea hydrothermal vents. The main aims of the cruise were to survey the diversity of the fauna of (i) hard bottoms that are typically found on deep seamounts, (ii) Astrolabe Bay from 200 m to about 1000 m, (iii) the chemosynthetic environments of the deep sea, including cold-seep environments and plant debris.... |
| Tipo: Text |
Palavras-chave: Bathymodiolinae; Cold-seep; Deep-sea; Siboglinidae. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00276/38703/37210.pdf |
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| Jollivet, Didier; Mary, Jean; Gagniere, Nicolas; Tanguy, Arnaud; Fontanillas, Eric; Boutet, Isabelle; Hourdez, Stephane; Segurens, Beatrice; Weissenbach, Jean; Poch, Olivier; Lecompte, Odile. |
| Taking advantage of the massive genome sequencing effort made on thermophilic prokaryotes, thermal adaptation has been extensively studied by analysing amino acid replacements and codon usage in these unicellular organisms. In most cases, adaptation to thermophily is associated with greater residue hydrophobicity and more charged residues. Both of these characteristics are positively correlated with the optimal growth temperature of prokaryotes. In contrast, little information has been collected on the molecular 'adaptive' strategy of thermophilic eukaryotes. The Pompeii worm A. pompejana, whose transcriptome has recently been sequenced, is currently considered as the most thermotolerant eukaryote on Earth, withstanding the greatest thermal and chemical... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00129/24008/21976.pdf |
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