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| Pante, Eric; France, Scott C.; Couloux, Arnaud; Cruaud, Corinne; Mcfadden, Catherine S.; Samadi, Sarah; Watling, Les. |
| The diversity, ubiquity and prevalence in deep waters of the octocoral family Chrysogorgiidae Verrill, 1883 make it noteworthy as a model system to study radiation and diversification in the deep sea. Here we provide the first comprehensive phylogenetic analysis of the Chrysogorgiidae, and compare phylogeny and depth distribution. Phylogenetic relationships among 10 of 14 currently-described Chrysogorgiidae genera were inferred based on mitochondrial (mtMutS, cox1) and nuclear (18S) markers. Bathymetric distribution was estimated from multiple sources, including museum records, a literature review, and our own sampling records (985 stations, 2345 specimens). Genetic analyses suggest that the Chrysogorgiidae as currently described is a polyphyletic family.... |
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| Ano: 2012 |
URL: https://archimer.ifremer.fr/doc/00467/57831/60158.pdf |
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| Lorion, Julien; Halary, Sebastien; Do Nasciment, Joana; Samadi, Sarah; Couloux, Arnaud; Duperron, Sebastien. |
| Small mytilids of the genus Ildas are related to the large mussels found worldwide at deep-sea hydrothermal vents and cold seeps. They are therefore keys to a better understanding of the colonization of vents and seeps by symbiont-bearing organisms, but still little is known about their biology. For this study, specimens of a mytilid referred to the genus Idas were collected from various substrates in a cold seep area near the Nile deep sea fan. Based on molecular and morphological data, all specimens are confirmed to belong to a single species of the genus Idas, which was previously shown to host six distinct bacterial symbionts. Its larval shell characteristics indicate a long planktonic phase, which could explain its close relationship to a mussel... |
| Tipo: Text |
Palavras-chave: Idas; Planktotrophy; Organic falls; Cold seeps; Symbiosis. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00133/24425/22436.pdf |
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| Lecointre, Guillaume; Ameziane, Nadia; Boisselier, Marie-catherine; Bonillo, Celine; Busson, Frederic; Causse, Romain; Chenuil, Anne; Couloux, Arnaud; Coutanceau, Jean-pierre; Cruaud, Corinne; D'Udekem D'Acoz, Cedric; De Ridder, Chantal; Denys, Gael; Dettai, Agnes; Duhamel, Guy; Eleaume, Marc; Feral, Jean-pierre; Gallut, Cyril; Havermans, Charlotte; Held, Christoph; Hemery, Lenaig; Lautredou, Anne-claire; Martin, Patrick; Ozouf-costaz, Catherine; Pierrat, Benjamin; Pruvost, Patrice; Puillandre, Nicolas; Samadi, Sarah; Saucede, Thomas; Schubart, Christoph; David, Bruno. |
| There has been a significant body of literature on species flock definition but not so much about practical means to appraise them. We here apply the five criteria of Eastman and McCune for detecting species flocks in four taxonomic components of the benthic fauna of the Antarctic shelf: teleost fishes, crinoids (feather stars), echinoids (sea urchins) and crustacean arthropods. Practical limitations led us to prioritize the three historical criteria (endemicity, monophyly, species richness) over the two ecological ones (ecological diversity and habitat dominance). We propose a new protocol which includes an iterative fine-tuning of the monophyly and endemicity criteria in order to discover unsuspected flocks. As a result nine "full" species flocks... |
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| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00296/40754/39754.pdf |
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| Martin-lescanne, Julie; Rousseau, Florence; De Reviers, Bruno; Payri, Claude; Couloux, Arnaud; Cruaud, Corinne; Le Gall, Line. |
| Molecular phylogenies inferred from rbcL sequences including 39 representative members of the Laurencia complex confirm the four genera currently recognised within the complex: Laurencia sensu stricto, Osmundea, Chondrophycus and the recently described genus Palisada. Furthermore, Palisada poiteaui was resolved as a fifth independent lineage suggesting that the complex is actually composed of five rather than four genera. Palisada poiteaui is the type species of the subgenus Yuzurua, and elevation of this subgenus to generic rank is proposed. This new genus allied strongly with Laurencia s.s. However, the other intergeneric relationships were not well supported, suggesting that rbcL sequences may not have sufficient signal to clarify infrageneric... |
| Tipo: Text |
Palavras-chave: Chondrophycus; Laurencia complex; Molecular phylogeny; Osmundea; Palisada; RbcL; Yuzurua poiteaui; Yuzurua stat; Nov. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00202/31324/29729.pdf |
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