Acute toxicity of four metals to early life-history stages of the crab Chasmagnathus granulata from Bahía Blanca Estuary, Argentina

Authors
Ferrer, Laura Daniela; Andrade, Santiago; Asteasuain, Raul Oscar; Marcovecchio, Jorge Eduardo
Publication Year
2006
Language
English
Format
article
Status
Published version
Description
Acute semistatic toxicity tests were carried out for 96 h with first zoeae and young crabs of Chasmagnathus granulata. Survival curves and LC50 (lethal concentration 50, the concentration which produces the death of 50% of the exposed population) indices for copper, zinc, cadmium, and lead were determined. Furthermore, mixture toxicity tests (Cd/Cu and Cd/Zn) with first-stage larvae were also carried out. The LC50-96 h values determined in this study were 1093.4 (881–1319) mgPb2+L 1, 219.2 (188.9–248.9) mgCu2+L 1, 172.1 (141.3–203.6) mgZn2+L 1, and 47.8 (37.9–58.0) mgCd2+L 1 for zoeae I and 130.1 (121.7–139.0)mgCu2+L 1, 51.0 (41.9–61.6)mgZn2+L 1, and 35.7 (30.1–41.9)mgCd2+L 1 for young crabs. The LC50-96 h indices for mixture tests with zoeae I were 260.6 (227.3–286.3) mgCd2+/Zn2+L 1 and 41.3 (37.4–60.7) mgCd2+/Cu2+L 1. Cadmium presented the highest acute toxicity for both stages of the life cycle examined. The toxicity of the metals analyzed followed the order cadmium 4zinc4copper4lead. First zoeae were more sensitive than young crabs to acute exposure to all metals analyzed. The young crabs were considered potentially dangerous agents of transference to the associated trophic chain because of their relatively elevated resistance and their capacity to bioaccumulate heavy metals in their tissues.Mixed toxicity tests carried out on first-stage larvae showed different kinds of interactions. Cadmium/copper presented an additive interaction trend while the mixture cadmium/zinc showed an antagonistic interaction
Fil: Ferrer, Laura Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Andrade, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Asteasuain, Raul Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Marcovecchio, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Subject
Bahia Blanca estuary
Heavy metals
Biological indicators
Bioassay
Oceanografía, Hidrología, Recursos Hídricos
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/16738