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	Provedor de dados ArchiMer (2) Autor Antoine, Loic (1) Chartois, Herve (1) Delbard, Christine (1) Fifas, Spyros (1) Goujon, Michel (1) Le Delliou, Herve (1) Person-le Ruyet, Jeannine (1) Mais... Palavra-chave Survival rate (2) Taux de survie (2) Alimentation (1) Ammonia (1) Azote ammoniacal (1) Chronic toxicity (1) Common dolphin (1) Croissance (1) Driftnet fishery (1) Food efficiency (1) Growth (1) Linear model (1) Modèle linéaire (1) Psetta maxima (1) Pêche au filet maillant dérivant (1) Toxicité chronique (1) Mais... Tipo do documento Text (2) Ano 1998 (1) 1997 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 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 Application of Leslie's model on a population of common dolphins (Delphinus delphis): Sensitivity study ArchiMer Fifas, Spyros; Goujon, Michel; Antoine, Loic. The rapid development of the albacore tuna (Thunnus alalunga) driftnet fishery in the Pay of Biscay (Atlantic ocean, France) has incited European management authorities to ask for a study of its ecological impact on populations of common dolphins and striped dolphins. A programme with onboard observers has been led during 1992 and 1993, and a sighting survey has allowed the evaluation of the abundances of fractions of populations in the studied area. For the population of common dolphins, the biological parameter estimation has allowed the building of a discrete age-structured model based on a Leslie matrix. Sensitivity studies have been conducted using four model parameters (age of first reproduction, interval between births, juvenile and adult survival... Tipo: Text Palavras-chave: Survival rate; Driftnet fishery; Common dolphin; Linear model; Taux de survie; Pêche au filet maillant dérivant; Modèle linéaire; Modèle linéaire. Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/publication-865.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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