Effect of Cadmium on the population growth of the marine diatom Chaetoceros gracilis Schutt

Descripción del Articulo

Phytoplankton constitutes the base of the trophic webs in the marine environment, so it is important to know the possible effects of pollutants on the algal populations. In the present paper the effect of cadmium on the population growth of the diatom Chaetoceros gracilis was assessed. The microalga...

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Detalles Bibliográficos
Autores: Vera, Giovana, Tam, Jorge, Pinto, Edwin, Angulo, José
Formato: artículo
Fecha de Publicación:2001
Institución:Universidad Nacional Mayor de San Marcos
Repositorio:Revista UNMSM - Revista Peruana de Biología
Lenguaje:español
OAI Identifier:oai:ojs.csi.unmsm:article/6512
Enlace del recurso:https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/6512
Nivel de acceso:acceso abierto
Materia:Ecotoxicology
pollution
cadmium
diatom
Chaetoceros gracilis
Ecotoxicología
contaminación
cadmio
diatomea
Chaetoceros gracilis.
Descripción
Sumario:Phytoplankton constitutes the base of the trophic webs in the marine environment, so it is important to know the possible effects of pollutants on the algal populations. In the present paper the effect of cadmium on the population growth of the diatom Chaetoceros gracilis was assessed. The microalgae were cultured in the a modified “f/2” Guillard medium, and were exposed to different concentrations of cadmium between 50 and 100000 µg.–1, which produced an inhibitory effect from 20% to 99% on the population growth of Chaetoceros gracilis. Based on the dose (cadmium)-response (inhibition) relationship, a mean effective concentration (EC50%) equal to 591 µg.L–1 of cadmium was obtained.
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