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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jul 2014, 35 (4)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Effect of metals? on Daphnia magna and cladocerans representatives of the Argentinean Fluvial Littoral

 

Regaldo Luciana1*, Reno Ulises1, Gervasio Susana2, Troiani Horacio3 and Gagneten Ana Mar?a1

1Laboratorio de Ecotoxicolog?a. Departamento de Ciencias Naturales. Facultad de Humanidades y Ciencias

Universidad Nacional del Litoral. Ciudad Universitaria. CP 3000. Santa Fe. Argentina

2INTEC-CONICET. Parque Tecnol?gico Litoral Centro. Ruta Nac. 168 - Km 3,5. CP 3000. Santa Fe. Argentina

3Centro At?mico Bariloche. Comisi?n Nacional de Energ?a At?mica Avenida Bustillo Km 9.5. CP 8400

San Carlos de Bariloche. R?o Negro. Argentina

*Corresponding Author E-mail: lregaldo@fhuc.unl.edu.ar

 

 

 

Publication Data

Paper received:

25 May 2013

 

Revised received:

10 October 2013

 

Accepted:

30 October 2013

 

 

Abstract

Chronic 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. ?

 

 Key words

Bioindicators, Ceriodaphnia dubia, Daphnia magna, Moinodaphnia macleayi, Metal pollution

 

 

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