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

• Main Authors: Thomas, Tresa Remya A., Anindita Das, LokaBharathi Ponnapakkam Adikesavan
• Format: Dataset
• Language: unknown
• Published: Taylor & Francis 2018
• Subjects: Microbiology; FOS Biological sciences; Cell Biology; Evolutionary Biology; 59999 Environmental Sciences not elsewhere classified; FOS Earth and related environmental sciences; Ecology; 69999 Biological Sciences not elsewhere classified; Marine Biology; Inorganic Chemistry; FOS Chemical sciences; Arctic
• Online Access: https://dx.doi.org/10.6084/m9.figshare.6046919; https://tandf.figshare.com/articles/A_Review_on_the_Phylogeography_of_Potentially_Chemoautotrophic_Bacteria_from_Major_Vent_and_Seep_Fauna_and_Their_Contribution_to_Primary_Production/6046919

Though geochemically and microbially well-defined, the phylogeographic data of microbial symbionts in these highly productive vent and seep systems require a closer examination and synthesis. QIIME analysis of 16S rDNA of bacterial associates of major fauna from 1995 to 2015 was thus undertaken to examine phylogeography of their microbial symbionts along with host specificity. While phylotypes were generally unrelated, bivalve Calyptogena exhibited vertical transmission sharing similar symbionts in geographically separated geosystems. Different species of tubeworms possessed identical symbionts through horizontal acquisition at geographically distinct Guaymas basin vent and the Arctic seep. Vents were more versatile with both mobile and sessile fauna hosting ecto- and endo-symbionts. Comparatively, seeps were more specialized with sessile animal hosts with endosymbionts. C-fixation rate measurements are still scanty for sediments, bedrocks and serpentine systems; vent, seep, anoxic and oxic basins were shown to fix up to 22, 325, 96, and 37,400 g C m −3 y −1 , respectively. Estimation of chemosynthetic primary production rates in chemoautotrophic ecosystems could endeavor to improve existing biogeographic models by coupling volcanism and plate-tectonics to global climate and phylogeography.