Publications (2)1.78 Total impact
Article: Repeated DNA elements in planarians of the Dugesia gonocephala group (Platyhelminthes, Tricladida)[show abstract] [hide abstract]
ABSTRACT: The results of the isolation of repetitive DNA elements in the genome of Dugesia etrusca, a species of the Dugesia gonocephala group, are reported. These sequences, about 1.4 kb long, represent only a part of longer interspersed genomic units (De1 family) and appear to be limited to the genome of some planarians of this group, as indicated by a Southern blot analysis performed in different species and populations. The genomic relationships among different species and populations of the D. gonocephala group are discussed in relation to the results obtained in the present work.Hydrobiologia 09/1998; 383(1):139-146. · 1.78 Impact Factor
Article: Toxic effects of aluminium, chromium and cadmium in intact and regenerating freshwater planarians[show abstract] [hide abstract]
ABSTRACT: The effects of exposure to heavy metals were analyzed in the intact and regenerating planarian Dugesia etrusca. Al3+ and Cr3+ were lethal at 1.5 mM concentration. Intact specimens, treated with A1 at lower concentrations, exhibited a variety of sublethal responses; Al was significantly more toxic than Cr. Alterations in the cephalic regeneration of decapitated planarians were observed with both metals. Cd2+ was tested at concentrations ranging from 0.18 μM to 18 μM. Until 1.8 μM, this metal did not produce any detectable sublethal responses in intact planarians, whereas higher concentrations were lethal. Sublethal Cd concentrations did not show any visible effect on cephalic regeneration.Chemosphere.