Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Sewage-exposed marine invertebrates: survival rates and microbiological accumulation |
| Abstract | A large number of bacteria, including agents responsible for diseases, characterise sewage-polluted seawaters. Apart from standards for bathing waters and bivalve aquaculture waters, there are no general microbiological standards applicable to seawaters to help decide if bacterial pollution is within acceptable ranges. This study represents an attempt towards the issue of comparing the susceptibility of different marine invertebrates subjected to polluted seawater with a high microbial contamination. We explored the survival rates and the microbiological accumulation of mollusc bivalves, echinoderms and crustaceans species exposed to sewage-polluted seawaters. Microbiological analyses were performed on the polluted seawater and on the homogenates of exposed and unexposed specimens. Culturable bacteria (22 °C and 37 °C) and microbial pollution indicators (total coliforms, Escherichia coli and intestinal enterococci) were measured. When exposed to the sewage-polluted seawater, the examined invertebrates showed different survival rates. In the filter feeders, bacterial densities at 22 °C and 37 °C rose after 96 h of exposure to sewage. The highest concentrations of total coliforms and intestinal enterococci were found in exposed bivalve Mytilus galloprovincialis. The concentrations of bacteria growing at 37 °C were lower in the exposed deposit feeders compared to the polluted seawater. Some yeasts were absent in several exposed species although these yeasts were present in the polluted seawater. Our data suggest that the examined filter feeders, given their capability to survive and accumulate bacteria, may counteract the effects of sewage and restore seawater quality. |
| Source | Environmental science and pollution research international 20 (3), pp. 1606–1616 |
| Keywords | Sewage pollutionMicrobial pollution indicatorsDeposit feedersFilter feedersBioremediation |
| Journal | Environmental science and pollution research international |
| Editor | Springer, Berlin, Germania |
| Year | 2013 |
| Type | Articolo in rivista |
| DOI | 10.1007/s11356-012-1103-x |
| Authors | STABILI L., TERLIZZI A., CAVALLO R. A. |
| Text | 215359 2013 10.1007/s11356 012 1103 x ISI Web of Science WOS WOS 000315442500038 Sewage pollution Microbial pollution indicators Deposit feeders Filter feeders Bioremediation Sewage exposed marine invertebrates survival rates and microbiological accumulation STABILI L., TERLIZZI A., CAVALLO R. A. IAMC CNR U.O.S. di Taranto DiSteBA Universita del Salento A large number of bacteria, including agents responsible for diseases, characterise sewage polluted seawaters. Apart from standards for bathing waters and bivalve aquaculture waters, there are no general microbiological standards applicable to seawaters to help decide if bacterial pollution is within acceptable ranges. This study represents an attempt towards the issue of comparing the susceptibility of different marine invertebrates subjected to polluted seawater with a high microbial contamination. We explored the survival rates and the microbiological accumulation of mollusc bivalves, echinoderms and crustaceans species exposed to sewage polluted seawaters. Microbiological analyses were performed on the polluted seawater and on the homogenates of exposed and unexposed specimens. Culturable bacteria 22 °C and 37 °C and microbial pollution indicators total coliforms, Escherichia coli and intestinal enterococci were measured. When exposed to the sewage polluted seawater, the examined invertebrates showed different survival rates. In the filter feeders, bacterial densities at 22 °C and 37 °C rose after 96 h of exposure to sewage. The highest concentrations of total coliforms and intestinal enterococci were found in exposed bivalve Mytilus galloprovincialis. The concentrations of bacteria growing at 37 °C were lower in the exposed deposit feeders compared to the polluted seawater. Some yeasts were absent in several exposed species although these yeasts were present in the polluted seawater. Our data suggest that the examined filter feeders, given their capability to survive and accumulate bacteria, may counteract the effects of sewage and restore seawater quality. 20 Published version Articolo in rivista Springer 0944 1344 Environmental science and pollution research international Environmental science and pollution research international Environ. sci. pollut. res. int. Environmental science and pollution research international. Environmental science and pollution research international Print Environmental science and pollution research Print ESPR Print loredana.stabili STABILI LOREDANA rosaanna.cavallo CAVALLO ROSA ANNA TA.P04.002.001 Fascia Costiera e Ambienti di Transizione analisi strutturale e funzionale delle componenti biotiche ed abiotiche degli ecosistemi per lo sviluppo sostenibile delle attivita TA.P04.029.002 Utilizzazione di biomasse e sostanze attive da organismi marini biotecnologie per loo sviluppo di nuovi bio materiali e composti bioattivi |