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(22-04) Use of histopathologic indicators in evaluating environmental impact on chubs and brown trouts. Paolini, Alessandra*,1, Schwaiger, Julia2, D'Angelo, Anna1, Giansante, Carla1, Berti, Miriam1, Ferri, Nicola1, 1 Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G.Caporale", Teramo, Italy2 Bavarian State Agency for Water Management, Wielenbach, Germany ABSTRACT- This study was carried out as part of a multidisciplinary research project in Abruzzo(Italy). It underlines the use of histopathologic investigations for evaluating environmental impact on fish. Brown trouts ( Salmo trutta fario ) from the river Aterno and chubs ( Leuciscus cephalus ) from the river Vomano were collected in winter and then again in spring. Histopathologic investigations involved gills, kidneys and livers and revealed inflammatory and degenerative lesions. The tissue lesions observed could represent early signs of environmental stress. The lesions were evaluated semiquantitatively and a ranking of findings was performed. The histopthologic features were compared with the results from water samples and Extended Biotic Index which were performed on the same rivers. Key words: histopathology, biomarkers, trout, chub |
