INALI   02622
INSTITUTO NACIONAL DE LIMNOLOGIA
Unidad Ejecutora - UE
artículos
Título:
Bioconcentration and trophic transfer of chromium in the Daphnia magna (Crustacea, Cladocera)- Cnesterodon decemmaculatus (Pisces, Poeciliidae) system
Autor/es:
GUTIERREZ, M. FLORENCIA; GAGNETEN, ANA MARÍA; PARMA, MARÍA JULIETA
Revista:
FRESENIUS ENVIRONMENTAL BULLETIN
Editorial:
Parlar
Referencias:
Lugar: Freising - Alemania; Año: 2007
Resumen:
SUMMARY Cr VI trophic transfer was analyzed in a primary and a secondary consumer: Daphnia magna- Cnesterodon decemmaculatus. Three static experimental assays were carried out using two Cr VI sublethal concentrations: 100 and 300 µg Cr VI/L, and a control (without added Cr). The Bioconcentration Factor was calculated for D. magna and the Bioaccumulation Factor was calculated for the D. magna-C.decemmaculatus system. The results showed a significant toxic effect of Cr VI on D. magna when bioaccumulated from water and on C.decemmaculatus when incorporated by the trophic tansfer. The obtained results constitute a great contribution to the knowledge of Cr VI trophic transfer and provide a valid tool for biomonitoring studies.