Cinética de incorporación del mercurio en Emerita portoricensis (Crustacea: Decapoda) / Kinetic incorporation of mercury in Emerita portoricensis (Crustacea: Decapoda)
Rev. biol. trop
;
48(Supl.1): 215-223, dic. 2000.
Artigo
em Espanhol
| LILACS
| ID: lil-503259
ABSTRACT
Benthic test species used in toxicity assays are the best indicators of sediment toxicity because they live in direct contact with sediments and the water column. Mercury chloride is one the most toxic metallic salts. Its strong affinity for particles explains the high Hg content found in benthic populations. The genus Emerita is abundantly found in Venezuelan coasts and is a good bioaccumulator of pollutants, but the toxicological assays performend on this genus are scarce. The present experimental test reports on the distribution of mercury in the water column and sediment, using static bioassay in short term (24 hr) and the ability of Emerita portoricensis to bioconcentrate mercury under experimental conditions. Our results suggest that the Hg transference from water to sediment is enhanced in the presence of Emerita. The kinetic uptake of Hg in Emerita portoricensis shows a mechanism of rapid absorption reaching high metal concentrations in short exposure times.
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Índice:
LILACS (Américas)
Assunto principal:
Decápodes
/
Poluentes Químicos da Água
/
Mercúrio
Limite:
Animais
País/Região como assunto:
América do Sul
/
Venezuela
Idioma:
Espanhol
Revista:
Rev. biol. trop
Assunto da revista:
Biologia
/
Medicina Tropical
Ano de publicação:
2000
Tipo de documento:
Artigo
País de afiliação:
Venezuela
Instituição/País de afiliação:
Escuela de Ciencias/VE
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