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| Titel: |
Protozoan feeding on natural and cultured bacteria deposited on inert polymeric and mineral membrane filters |
| Auteur: |
Zubkov, Mikhail V. Sleigh, Michael A. |
| Verschenen in: |
Biofouling |
| Paginering: | Jaargang 14 (1999) nr. 1 pagina's 25-35 |
| Jaar: |
1999-06 |
| Inhoud: |
Early stages of development of marine bacterial biofilms were represented by cultured or freshly-collected natural bacteria radiolabelled and deposited on 0.2 μm pore size polycarbonate (Nuclepore) or aluminium oxide (Anopore) filters. A proportion of the bacteria gradually resuspended themselves, but few were lost from the mineral filters; larger quantities of bacteria were lost from the surfaces of filters (especially the mineral ones) in the presence of un-specialised protozoa than in the absence of protozoa. The extent of grazing on deposited bacteria and the assimilation of bacterial biomass was measured separately for the flagellates Paraphysomonas imperforata, Pteridomonas danica and Cafeteria menbergensis and the ciliate Uronema marinum. Deposited bacteria were grazed similarly by all four protozoa to the extent of about 25% from polymeric filters and 7% from mineral filters. The proportion of the consumed biomass of cultured Vibrio natriegens that was assimilated by protozoa ranged between 10 and 20%, while between 25% (Cafeteria) and 65% (Pteridomonas) of the consumed natural bacterial biomass was assimilated. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 10 gevonden artikelen
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