Liaci D, De Donno A, Bagordo F, Erroi R, Rizzo C, Gabutti G
Laboratorio di Igiene, DiSTeBA, Università degli Studi di Lecce.
Ann Ig. 2003 Sep-Oct;15(5):671-84.
A biomonitoring study using "Mytilus galloprovincialis" mussels was carried out, to estimate their possible employment as "natural indicators" of coastal bacterial pollution. The research was conducted from September 2001 to May 2002, twice in a month, near two coastal zones of Salento. We analysed both natural and cultivated mussels. The latter were placed in cages, after checking their starting level of microbiological pollution. The bacteriological analyses conducted simultaneously on mussels and their ambient water, were directed to the search of: total and faecal coliforms, faecal streptococci, Escherichia coli, Salmonella spp., Staphylococcus aureus and yeasts. In this preliminary study the mussels proved to be "sensitive indicators of faecal pollution", since they had an accumulation of the faecal indicators even if the water was not contaminated. Nevertheless a lower frequency in finding yeasts in the mussels (53.8%) in comparison with water (74.3%), the irregular presence of Salmonella spp. in water (3.75%) and its absence in bivalves, show the need of further studies, also through "in vitro" tests, in order to verify absorption/elimination kinetics of microorganisms.
开展了一项使用加利福尼亚贻贝的生物监测研究，以评估其作为沿海细菌污染“天然指标”的潜在用途。该研究于2001年9月至2002年5月进行，每月两次，在萨伦托的两个沿海区域附近。我们对天然贻贝和养殖贻贝都进行了分析。后者在检查其微生物污染起始水平后被放置在笼子里。对贻贝及其周围水体同时进行的细菌学分析旨在检测：总大肠菌群和粪大肠菌群、粪链球菌、大肠杆菌、沙门氏菌属、金黄色葡萄球菌和酵母菌。在这项初步研究中，贻贝被证明是“粪便污染的敏感指标”，因为即使水体未受污染，它们体内也会积累粪便指标菌。然而，与水体（74.3%）相比，贻贝中酵母菌的检出频率较低（53.8%），水体中沙门氏菌属的出现情况不规律（3.75%）且双壳贝类中未检出，这表明需要通过“体外”试验等进一步研究，以验证微生物的吸收/消除动力学。
