Data/hora: 10/06/2024 08:07:32

Provedor de dados: 	124	
País: 	Brazil	
Título: 	Acute toxicity of non-ionized ammonia on tambacu (Colossoma macropomum x Piaractus mesopotamicus)	
Autores: 	Quaresma,Fabrízia da Silva; Santos,Fernando Luís Batista dos; Ribeiro,Pedro Florêncio; Leite,Lorena Alves; Sampaio,Alexandre Holanda.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Aquaculture; Water quality; NH3.	
Resumo: 	ABSTRACT Ammonia is a toxic compound to aquatic organisms and at high concentrations in water, it can cause various changes in the animal. Therefore, it becomes important to determine the tolerance of farmed aquatic animals for that substance. Thus, the aim of this study was to determine the mean lethal concentration (LC50-96 h) of un-ionized ammonia (NH3) in tambacu fingerlings (Colossoma macropomum x Piaractus mesopotamicus) in acute toxicity test. The fingerlings were exposed to ammonia at concentrations of: 0.09 (control); 0.54; 1.23; 2.52; 3.44 and 3.66 mg L-1 NH3, which were obtained from the application of NH4Cl. The test lasted 96 hours and mortalities were recorded over that period. The LC50 was determined by the Trimmed Spearman Karber statistical method. The LC50-96 h of non-ionized ammonia (NH3) for fingerlings of the tambacu hybrid was 1.63 mg L-1.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300901	
Editor: 	Universidade Federal do Ceará	
Relação: 	10.5935/1806-6690.20200046	
Formato: 	text/html	
Fonte: 	Revista Ciência Agronômica  v.51 n.3 2020	
Fonte: 	info:eu-repo/semantics/openAccess