title: Uncoupled viral and bacterial distributions in coral reef waters of Tuamotu Archipelago (French Polynesia).
abstract: This study examined the distribution of virioplankton and bacterioplankton in two coral reef systems (Ahe and Takaroa atolls) in the Tuamotu Archipelago, in comparison with the surrounding oligotrophic ocean. Mean concentrations of 4.8×10(5) and 6.2×10(5) cells ml(-1) for bacteria and 8.1×10(6) and 4.3×10(6) VLP(virus-like particle) ml(-1) were recorded in Ahe and Takaroa lagoons, respectively. Chlorophyll-a concentrations and dissolved organic matter were higher in Ahe whereas (3)H thymidine incorporation rates were higher in Takaroa. First data on lytic and lysogenic strategies of phages in coral reef environments were discussed in this paper. The fraction of visibly infected cells by viruses was negligible regardless of the lagoon station (mean=0.15%). However, the fraction of lysogenic cells ranged between 2.5% and 88.9%. Our results suggest that the distribution patterns of virioplankton are apparently not coupled to the spatial dynamics of the bacterioplankton communities.
authors.affiliation: UMR 5119, ECOSYM - Ecologie des systèmes marins côtiers (UM2, CNRS, IRD, Ifremer, UM1), Université Montpellier 2, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex 5, France. marc.bouvy@ird.fr
authors.forename: Marc
authors.initials: M
authors.lastname: Bouvy
authors.forename: Marine
authors.initials: M
authors.lastname: Combe
authors.forename: Yvan
authors.initials: Y
authors.lastname: Bettarel
authors.forename: Christine
authors.initials: C
authors.lastname: Dupuy
authors.forename: Emma
authors.initials: E
authors.lastname: Rochelle-Newall
authors.forename: Loic
authors.initials: L
authors.lastname: Charpy
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000382:microbiology* / Q000821:virology; D001419:Bacteria / Q000145:classification / Q000254:growth & development* / Q000302:isolation & purification; D057894:Coral Reefs; D004784:Environmental Monitoring; D010933:Plankton / Q000145:classification / Q000254:growth & development* / Q000302:isolation & purification; D011114:Polynesia; D012623:Seawater / Q000382:microbiology / Q000821:virology; D014780:Viruses / Q000145:classification / Q000254:growth & development* / Q000302:isolation & purification