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| Olu, Karine; Von Cosel, R; Hourdez, S; Carney, S; Jollivet, D. |
| Deep-sea bivalves of the subfamily Bathymodiolinae (family Mytilidae) are very widespread and form dense beds in reduced environments such as hydrothermal vents and cold seeps. Bathymodiolus mussels recently discovered on African cold seeps strangely resemble Gulf of Mexico and Barbados seep species. This raises intriguing questions regarding their taxonomic relationships and their dispersal capabilities across the Atlantic equatorial belt. The morphological study of the shell and soft parts of mussels from either sites of the Atlantic shows that they form two distinct groups: the Bathymodiolus boomerang group (also including Bathymodiolus heckerae and a species from Africa), and the Bathymodiolus childressi group (also including Bathymodiolus mauritanicus... |
| Tipo: Text |
Palavras-chave: RDNA ITS2; Mitochondrial cytochrome oxydase; Amphi Atlantic species; Cold seeps; Bathymodiolus. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-4064.pdf |
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| Brand, G; Horak, R; Le Bris, Nadine; Goffredi, S; Carney, S; Govenar, B; Yancey, P. |
| Vesicomyid clams, vestimentiferans, and some bathymodiolin mussels from hydrothermal vents and cold seeps possess thiotrophic endosymbionts, high levels of hypotaurine and, in tissues with symbionts, thiotaurine. The latter, a product of hypotaurine and sulfide, may store and/or transport sulfide non-toxically, and the ratio to hypotaurine plus thiotauririe (Th/[H + Th]) may reflect an animal's sulfide exposure. To test this, we analyzed seep and vent animals with in situ sulfide measurements. Calyptogena kilmeri clams occur at high-sulfide seeps in Monterey Canyon, while C. (Vesicomya) pacifica clams occur at seeps with lower levels but take up and metabolize sulfide more effectively. From one seep where they co-occur, both had gill thiotaurine contents... |
| Tipo: Text |
Palavras-chave: Vestimentiferan; Vesicomyid; Thiotaurine; Taurine; Hypotaurine; Bathymodiolin. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3563.pdf |
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