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Some aspects of water filtering activity of filter-feeders. https://www.researchgate.net/publication/226902807;
The article (Ostroumov, 2005) was cited in:
Filtering activity on a pure culture of Vibrio alginolyticus by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis: a potential service …
L Stabili, M Licciano, MF Gravina, A Giangrande - Science of The Total Environment, 2016
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 ...
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 ...
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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;
- Received 24 March 2016, Revised 29 July 2016, Accepted 30 July 2016, Available online 20 August 2016
- Editor: D. Barcelo
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Highlights
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- The two studied ascidians show a filter-feeding activity on bacteria
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- These ascidians may counteract the effects of microbial pollution.
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- Styela plicata is higher efficient than Polyandrocarpa zorritensis in removing V. alginolyticus
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- The highest retention efficiency of P. zorritensis was 41%
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- S. plicata may be used for in situ bioremediation to restore seawater quality
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 g− 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 μgCL− 1 g− 1 DW for P. zorritensis and 81% corresponding to a bacterial biomass of 32.28 + 2.15 μgCL− 1 g− 1DW 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.
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Graphical abstract
Keywords
- Ascidians,
- Bioremediation,
- Clearance rate,
- Filter feeders,
- Retention efficiency,
- Water quality,
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Loredana Stabili
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Margherita Licciano
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Maria Flavia Gravina
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Adriana Giangrande
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