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	Provedor de dados ArchiMer (1) Autor Chartois, Herve (1) Delbard, Christine (1) Le Delliou, Herve (1) Person-le Ruyet, Jeannine (1) Palavra-chave Alimentation (1) Ammonia (1) Azote ammoniacal (1) Chronic toxicity (1) Croissance (1) Food efficiency (1) Growth (1) Psetta maxima (1) Survival rate (1) Taux de survie (1) Toxicité chronique (1) Mais... Tipo do documento Text (1) Ano 1997 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Toxicity of ammonia to turbot juveniles: I. effects oil survival, growth and food utilisation ArchiMer Person-le Ruyet, Jeannine; Delbard, Christine; Chartois, Herve; Le Delliou, Herve. Long-term effects of constant exogenous ammonia concentrations were investigated in two different batches of turbot juveniles (53 and 73 g) under controlled environmental and feeding conditions. Over the 84-day experiments, ambient un-ionized ammonia (UIA-N, NH3) concentrations were steady (coefficient of variation, 12-16 %) and water pH range was 7.88-7.99. Survival was maximum up to 0.33 mg.l(-1) UIA-N and at 0.73, 50 % mortalities were observed on day 52 (73 g) or day 77 (53 g). No-growth concentration was 0.73 mg.l(-1) UIA-N in the two groups and the 84-day lowest-observable-effect concentration range 0.14-0.33 mg.l(-1). In the most tolerant group (53 g), the 84-day no-observable-effect concentration was 0.14 mg.l(-1) UIA-N. The estimated 28-day... Tipo: Text Palavras-chave: Azote ammoniacal; Toxicité chronique; Taux de survie; Croissance; Alimentation; Ammonia; Chronic toxicity; Survival rate; Growth; Food efficiency; Psetta maxima. Ano: 1997 URL: http://archimer.ifremer.fr/doc/00188/29882/28354.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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