| Title | Seasonal variations in metal content of two Unio pictorum mancus (Mollusca, Unionidae) populations from two lakes of different trophic state |
| Abstract | To assess the impact of lake trophy on trace element accumulation by Unio pictorum mancus, a population from the mesooligotrophic Lake Maggiore was compared with a population from the eutrophic Lake Candia. The element content in soft tissue and shell biomass, the seasonal variations of element concentrations in soft tissues and shell, and the relationship between element concentrations in the water and those in the tissues were estimated in pursuit of this objective. Thirteen mussel samplings were
performed in Lake Maggiore between May 2003 and September 2004 and in Lake Candia between June 2003 and August 2004.
Filtered water samples were collected seasonally. Water, shell and soft tissue samples were analysed by ICP-OES and ICP-MS for the measurement of following elements: Zn, Cu, Fe, Mn, Ni, As, Pb, Co, Cr, Mo, V, Cd, Be and Ca. The element concentrations in the mussel tissues and shell from Lake Maggiore were higher than those from Lake Candia. Due to the higher population density and higher element concentrations in the mussels of Lake Maggiore, the element content in the biomass per m2 in this lake far exceeded that in Lake Candia. |
| Source | Journal of limnology (Testo stamp.) 66 (1), pp. 28–39 |
| Keywords | freshwater bivalveseasonal variationsmetalsshell and soft tissuesconcentration factor |
| Journal | Journal of limnology (Testo stamp.) |
| Editor | Istituto per lo Studio degli Ecosistemi., Verbania Pallanza, Italia |
| Year | 2007 |
| Type | Articolo in rivista |
| Authors | Ravera O.; Beone G.M.(1); Trincherini P.R.(2); Riccardi N. |
| Text | 52968 2007 ISI Web of Science WOS 000249928300004 freshwater bivalve seasonal variations metals shell and soft tissues concentration factor Seasonal variations in metal content of two Unio pictorum mancus Mollusca, Unionidae populations from two lakes of different trophic state Ravera O.; Beone G.M. 1 ; Trincherini P.R. 2 ; Riccardi N. 1 Universita Cattolica del Sacro Cuore, Istituto di Chimica Agraria e Ambientale, 29100 Piacenza, Italy; 2 LIMS Lab. of Inorganic Mass Spectrometry , ITI L. Cobianchi and Dipartimento di Chimica, Universita di Torino, 28921 Verbania, Italy To assess the impact of lake trophy on trace element accumulation by Unio pictorum mancus, a population from the mesooligotrophic Lake Maggiore was compared with a population from the eutrophic Lake Candia. The element content in soft tissue and shell biomass, the seasonal variations of element concentrations in soft tissues and shell, and the relationship between element concentrations in the water and those in the tissues were estimated in pursuit of this objective. Thirteen mussel samplings were performed in Lake Maggiore between May 2003 and September 2004 and in Lake Candia between June 2003 and August 2004. Filtered water samples were collected seasonally. Water, shell and soft tissue samples were analysed by ICP OES and ICP MS for the measurement of following elements Zn, Cu, Fe, Mn, Ni, As, Pb, Co, Cr, Mo, V, Cd, Be and Ca. The element concentrations in the mussel tissues and shell from Lake Maggiore were higher than those from Lake Candia. Due to the higher population density and higher element concentrations in the mussels of Lake Maggiore, the element content in the biomass per m2 in this lake far exceeded that in Lake Candia. 66 Seasonal variations in metal content of two Unio pictorum mancus Mollusca, Unionidae populations from two lakes of different trophic state articolo pubblicato Ravera_Beone_Trincherini_Riccardi_2007.pdf Articolo in rivista Istituto per lo Studio degli Ecosistemi. 1129 5767 Journal of limnology Testo stamp. Journal of limnology Testo stamp. J. limnol. Testo stamp. Journal of limnology. Testo stamp. nicolettarita.riccardi RICCARDI NICOLETTA RAVERA OSCAR TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |
