of metals? on Daphnia magna and cladocerans representatives of the
Argentinean Fluvial Littoral
Reno Ulises1, Gervasio Susana2, Troiani Horacio3
and Gagneten Ana Mar?a1
Ecotoxicolog?a. Departamento de Ciencias Naturales. Facultad de Humanidades y
Nacional del Litoral. Ciudad Universitaria. CP 3000. Santa Fe. Argentina
Parque Tecnol?gico Litoral Centro. Ruta Nac. 168 - Km 3,5. CP 3000. Santa Fe.
Bariloche. Comisi?n Nacional de Energ?a At?mica Avenida Bustillo Km 9.5. CP
San Carlos de
Bariloche. R?o Negro. Argentina
Author E-mail: firstname.lastname@example.org
25 May 2013
10 October 2013
30 October 2013
toxicity tests were conducted to assess the effect of Cu, Cr and Pb on Moinodaphnia
macleayi and Ceriodaphnia dubia -two cladoceran species from the
Argentinian Fluvial Littoral Zone (AFLZ)- and Daphnia magna -an holarctic
species-. The specimens were exposed to three concentrations of each metal.
As endpoints, the number of living and dead organisms, molts, neonates
released, and the age of first reproduction were recorded. Chronic assays
showed that Cu significantly affected the analyzed life history traits in the
three species. The lowest Pb and Cr concentrations did not affect survival,
molting or fecundity in D. magna. Conversely, in M. macleayi
and C. dubia, survival, molting and fecundity showed highly
significant differences in all the concentrations tested compared to control
assay. The present study stresses the importance of using biological
parameters as bioindicators, as well as the study species from the Southern
Hemisphere to assess metal pollution. ?
Ceriodaphnia dubia, Daphnia magna, Moinodaphnia macleayi, Metal
? 2014 Triveni Enterprises. All rights reserved. No part of the Journal can
be reproduced in any form without prior permission. Responsibility
regarding the authenticity of the data, and the acceptability of the
conclusions enforced or derived, rest completely with the author(s).