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Trophic structure of vermetid reef community: High trophic diversity at small spatial scales ArchiMer
Colombo, Francesca; Costa, Valentina; Dubois, Stanislas; Gianguzza, Paola; Mazzola, Antonio; Vizzini, Salvatrice.
Stable isotopes were used to investigate contributions of autochthonous (i.e. benthic: epilithon and macroalgae) and allochthonous (i.e. pelagic: phytoplankton) organic matter sources to the diet of suspension-feeders, grazers and predators associated to small reef-pools (cuvettes) created by the reef-building species Dendropoma petraeum in the north-western coast of Sicily (Italy). Contributions of potential food sources were calculated using Bayesian mixing-models and integrated to a multivariate approach to highlight the diversity of C and N pathways within Dendropoma cuvettes. Both pelagic and benthic organic matter sources were exploited by benthic consumers, although clear differences were revealed in the various species depending on their feeding...
Tipo: Text Palavras-chave: Dendropoma petraeum; Stable Isotope; Bayesian Mixing Model; Trophic Niche; Intertidal.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00130/24103/22855.pdf
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Out of the deep-sea into a land-based aquarium environment: Investigating innate immunity in the hydrothermal vent mussel Bathymodiolus azoricus ArchiMer
Bettencourt, Raul; Costa, Valentina; Laranjo, Mario; Rosa, Domitilia; Pires, Luis; Colaco, Ana; Sarradin, Pierre Marie; Lopes, Humberto; Sarrazin, Marie Josée; Santos, Ricardo Serrao.
Deep-sea hydrothermal vents are considered as some of the most adverse environments in the world, yet the animals dwelling around the vent sites exhibit high productivity and therefore must cope with unusual levels of heavy metals, pH, temperature, CO2 and sulfide, in addition to environmental microbes. In an attempt to understand the physiological reactions of animals normally set to endure extreme conditions we investigated molecular indicators of acclimation processes during which the mussel Bathymodiolus azoricus was maintained over long periods of time under without methane and/or sulfide supplementation, vent mussels seem to endure well aquarium conditions. The presence and induction of a Rel Homology Domain containing gene was investigated along...
Tipo: Text Palavras-chave: Bathymodiolus azoricus; Innate immunity; Gene expression; IPOCAMP; Physiological adaptation; Hydrothermal vent.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00019/13042/10154.pdf
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