A Review on the Phylogeography of Potentially Chemoautotrophic Bacteria from Major Vent and Seep Fauna and Their Contribution to Primary Production

Hydrothermal Energy Transfer and Organic Carbon Production at the Deep Seafloor

“…Carbon-fixation rate values as high as 80.2 and 3.5 10 4 gC m −3 y −1 have been reported from incubated fluids and microbial mats from hydrothermal systems, respectively (Das et al, 2011;Thomas et al, 2018). A critical need, however, is to better constrain the energy yields for vent chemolithoautotrophs in conditions truly representative of vent habitats.…”

Detailed Mapping of Hydrothermal Vent Fauna: A 3D Reconstruction Approach Based on Video Imagery

“…Bathymodiolus mussels are known as symbiotic species containing thiotrophic bacteria on their gills (Goffredi et al, 2004) that are likely acquired from their surrounding habitat (Thomas et al, 2018). Its individual composition can be highly variable within a single vent site (Van Dover, 2002).…”

“…Some mussels contain methanotrophic symbionts or a mix of thioand methanotrophic bacteria (Pond et al, 1998;De Busserolles et al, 2009). Despite their symbiotic ability, they are mixotrophic and remain a functional gut and filter feeding habit (Thomas et al, 2018), which could be related with a lower temperature tolerance (Podowski et al, 2009) and their preference to form greater aggregations on basaltic surfaces (Podowski et al, 2010).…”

“…Hydrothermal vents form structurally complex, small-scale habitats (Cuvelier et al, 2009;Podowski et al, 2010) of metal rich deposits. Fluid discharges provide energy for freeliving and symbiotic microorganisms that form the basis for chemoautotrophic primary production (Jannasch and Mottl, 1985;Childress et al, 1991;Thomas et al, 2018). These vent fields can support diverse and locally densely populated biological communities (Hashimoto et al, 1995;Galkin, 1997;Copley et al, 2016;Thornton et al, 2016).…”

Chemoautotrophy at the Expense of Thiosulphate: A Supplementary Nutritional Source to the Mangrove Clam-Polymesoda Erosa

“…Proteobacteria was the most abundant in gill and sediment while Bacteroidetes dominated in foot and mantle in metagenomic community analysis. Since Proteobacteria from various chemosynthetic ecosystems like hydrothermal vents and cold seeps are key players in chemoautotrophy (Thomas et al 2018). Such observation in mangrove ecosystems also emphasizes their important contribution in dark carbon xation.…”