Data/hora: 11/06/2024 14:43:54

Provedor de dados: 	40	
País: 	Argentina	
Título: 	Acute silver toxicity to Cnesterodon decemmaculatus (Pisces: Poeciliidae) in a river with extreme water-quality characteristics	
Autores: 	Casares,María Victoria; de Cabo,Laura I; Seoane,Rafael; Natale,Oscar.	
Data: 	2013-12-01	
Ano: 	2013	
Palavras-chave: 	Silver; Cnesterodon decemmaculatus; Biotic Ligand Model; Extrapolation.	
Resumo: 	Abstract. A 96 h acute silver toxicity test was performed in order to determine silver toxicity (LC50) to a local fish species (Cnesterodon decemmaculatus) in a river with extreme water-quality characteristics (Pilcomayo River, South America) and evaluate a cross-fish-species extrapolation of the Biotic Ligand Model. The dissolved silver concentrations tested were 0.095, 0.148, 0.175 and 0.285 mg Ag L&amp;#8722;1. The 96 h Ag LC50 calculated for C. decemmaculatus was 0.14 mg L&amp;#8722;1 (0.18 - 0.10) and the value predicted by BLM for Pimephales promelas was 0.051 mg Ag L&amp;#8722;1. Test water elevated hardness may have exerted some protective effect. High mean water pH may have exerted a major protective effect by reducing silver free ion form and causing silver precipitation. The mortality pattern observed in this toxicity test may lend some support to a relationship between gill silver accumulation and mortality. A cross-fish-species extrapolation of Ag BLM for P. promelas was not valid in Pilcomayo River water and experimental conditions of this toxicity test.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200004	
Editor: 	Asociación Toxicológica Argentina	
Formato: 	text/html	
Fonte: 	Acta toxicológica argentina  v.21 n.2 2013	
Fonte: 	info:eu-repo/semantics/openAccess