| is meltwater from alpine glaciers a secondary ddt source for lakes? | a sharp increase in 2005 of pp'ddt and its metabolites was observed in mussels and fish from lakes como and iseo, the main glacier-fed southern alpine lakes. ddts in zebra mussels (dreissena polymorpha) were more than 150 times higher than levels in 2003, and concentrations in pelagic fish (0.12 mgkg(-1) w.w.) exceeded the italian safety threshold for human consumption (0.05 mgkg(-1) w.w.). the histological examination of the ovaries revealed many mussels with oocyte degeneration throughout the ... | 2008 | 18805565 |
| evaluation of several priority pollutants in zebra mussels (dreissena polymorpha) in the largest italian subalpine lakes. | zebra mussel (dreissena polymorpha) has been used for the biomonitoring of several pops (pcbs, ddts, hcb and hchs) in the largest italian subalpine great lakes (lake maggiore, garda, como, iseo and lugano). samplings were carried out in april 2003 at 15 locations selected according to industrial and anthropic levels of lakes. results have pointed out high ddt levels in d. polymorpha specimens from lake maggiore (700-1400 ng/g lipids, 5-9 times higher than those measured in mussels of other itali ... | 2008 | 17561323 |
| screening of pop pollution by ache and erod activities in zebra mussels from the italian great lakes. | the increase of ethoxyresorufin dealkylation (erod) and the inhibition of acetylcholinesterase (ache) as biomarkers have been commonly used in vertebrates for the persistent organic pollutants (pops) biomonitoring of aquatic environments, but very few studies have been performed for invertebrates. previous researches demonstrated the interference due to some chemicals on erod and ache activities of the freshwater bivalve zebra mussel (dreissena polymorpha) in laboratory and field studies, showin ... | 2005 | 16263378 |
| use of zebra mussel (dreissena polymorpha) to assess trace metal contamination in the largest italian subalpine lakes. | trace metal (cd, co, cr, cu, hg, ni, pb and zn) contamination was evaluated in zebra mussels from the lakes maggiore, lugano, como, iseo and garda, which are located in the most highly populated and industrialised area in italy. zebra mussels from lake maggiore contained the highest concentrations (3.44, 1.51, 4.97, 0.158, 5.87, 346 microg g(-1) for cd, co, cr, hg, pb, zn, respectively) of all metals analysed except cu and ni. the lowest levels of most metals were in animals from garda and lugan ... | 2001 | 11444309 |