Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Filtering activity on a pure culture of Vibrio alginolyticus by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis: a potential service to improve microbiological seawater quality economically |
| Abstract | We investigated and compared, by laboratory experiments, the filter-feeding activity on bacteria by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis. Clearance rates and retention efficiencies were estimated by using, as only food source, the bacterial species Vibrio alginolyticus selected on account of its importance in aquaculture pathogenicity. The Cmax was 1.4 +/- 0.17 L h(-1) DW for S. plicata and 1.745 L h(-1) g(-1) DW for P. zorritensis. The highest retention efficiency was 41% corresponding to a removed bacterial biomass of 16.34 + 1.71 mu gCL(-1) g(-1) DW for P. zorritensis and 81% corresponding to a bacterial biomass of 32.28 + 2.15 mu gCL(-1) g(-1) DW for S. plicata. Styela plicata resulted higher efficient than P. zorritensis in removing V. alginolyticus from seawater in"experimental tanks, thus representing a more suitable biofilter to restore the quality of microbiologically contaminated waters including those where aquaculture is practiced. Present laboratory experiments represent the first contribution to the comparison of the filtration activity of the two ascidians, as well as to characterize the filtration process on bacterioplankton and pone the basis for future field works aimed to restore bacteriological polluted seawater. (C) 2016 Elsevier B.V. All rights reserved. |
| Source | Science of the total environment 573, pp. 11–18 |
| Keywords | AscidiansBioremediationClearance rateFilter feedersRetention efficiencyWater quality |
| Journal | Science of the total environment |
| Editor | Elsevier, Lausanne ;, Paesi Bassi |
| Year | 2016 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.scitotenv.2016.07.216 |
| Authors | Stabili, Loredana; Licciano, Margherita; Gravina, Maria Flavia; Giangrande, Adriana |
| Text | 443673 2016 10.1016/j.scitotenv.2016.07.216 ISI Web of Science WOS 000390071000002 Ascidians Bioremediation Clearance rate Filter feeders Retention efficiency Water quality Filtering activity on a pure culture of Vibrio alginolyticus by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis a potential service to improve microbiological seawater quality economically Stabili, Loredana; Licciano, Margherita; Gravina, Maria Flavia; Giangrande, Adriana CNR; Univ Salento; Univ Roma Tor Vergata We investigated and compared, by laboratory experiments, the filter feeding activity on bacteria by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis. Clearance rates and retention efficiencies were estimated by using, as only food source, the bacterial species Vibrio alginolyticus selected on account of its importance in aquaculture pathogenicity. The Cmax was 1.4 / 0.17 L h 1 DW for S. plicata and 1.745 L h 1 g 1 DW for P. zorritensis. The highest retention efficiency was 41% corresponding to a removed bacterial biomass of 16.34 1.71 mu gCL 1 g 1 DW for P. zorritensis and 81% corresponding to a bacterial biomass of 32.28 2.15 mu gCL 1 g 1 DW for S. plicata. Styela plicata resulted higher efficient than P. zorritensis in removing V. alginolyticus from seawater in experimental tanks, thus representing a more suitable biofilter to restore the quality of microbiologically contaminated waters including those where aquaculture is practiced. Present laboratory experiments represent the first contribution to the comparison of the filtration activity of the two ascidians, as well as to characterize the filtration process on bacterioplankton and pone the basis for future field works aimed to restore bacteriological polluted seawater. C 2016 Elsevier B.V. All rights reserved. 573 Published version Filtering activity on a pure culture of Vibrio alginolyticus prodotto N. 18 Science of the Total Environment 2016.pdf Articolo in rivista Elsevier 0048 9697 Science of the total environment Science of the total environment Sci. total environ. loredana.stabili STABILI LOREDANA DTA.AD005.084.002 Utilizzazione di biomasse e sostanze attive da organismi marini |