Consulta: creatorFacets:"Kojadinovic, Jessica"
Registros recuperados: 5
Data/hora: 07/06/2024 01:58:50

Trace elements in three marine birds breeding on Reunion Island (Western Indian Ocean): Part 2 - Factors influencing their detoxification
Provedor de dados: 5
Autores: Kojadinovic, Jessica; Bustamante, Paco; Le Corre, M; Cosson, R. P.
Seabird tissues collected between 2002 and 2004 from Barau's Petrel (Pterodroma baraui), Audubon's Shearwater (Puffinus lherminieri bailloni), and White-Tailed Trop icbird (Phaethon lepturus) colonies on Reunion Island were analyzed for metallothioneins (MTs) and trace element content. The subcellular distribution between soluble and insoluble fractions of Cd, Cu, Fe, Mn, Se, and Zn was determined in liver and kidney. In both, the soluble fraction of the cell concentrated most of the Cd and Se, whereas Fe, Mn, and Zn were preferentially accumulated in the insoluble fraction. The distribution of these elements varied with the tissue, age of the bird, and species. Furthermore, the distributions of Fe and Mn were somewhat influenced by the bird's physical...
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2489.pdf

Mercury content in commercial pelagic fish and its risk assessment in the Western Indian Ocean
Provedor de dados: 5
Autores: Kojadinovic, Jessica; Potier, M; Le Corre, M; Cosson, R; Bustamante, Paco.
As top predators of pelagic food webs, large fish naturally bioaccumulate mercury (Hg). Determining Hg burdens in commercialized fish is essential considering the concern about effects of contaminants on human health and the legal thresholds that are therefore set for local consumption and/or exportation. Total Hg levels were measured in the muscular tissue of 183 fish of five commercially important species from the tropical zone of the Western Indian Ocean. All individuals were measured and sexed in order to study the impregnation of Hg with size and sex within each species. Values of Hg found in this part of the Indian Ocean were comparable to Hg in muscular tissue of the same species studied in other areas. The highest Hg levels were noted in Swordfish...
Tipo: Text
Palavras-chave: Health standards; Mozambique channel; Reunion Island; Pelagic fish; Impregnation levels; Mercury.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1862.pdf

Mercury in seabird feathers: Insight on dietary habits and evidence for exposure levels in the western Indian Ocean
Provedor de dados: 5
Autores: Kojadinovic, Jessica; Bustamante, Paco; Churlaud, Carine; Cosson, Richard P.; Le Corre, Matthieu.
Breast feathers were used to estimate mercury levels in six marine birds nesting in the tropical western Indian Ocean, i.e. Sooty Tern (Sterna fuscata), Brown Noddy (Anous stolidus), Lesser Noddy (Anous tenuirostris), Audubon Shearwater (Puffinus lherminieri bailloni), Barau's Petrel (Pterodroma baraui) and the White-tailed Tropicbird (Phaethon lepturus). Juveniles consistently showed lower plumage mercury than adults. The lowest mean level was noted in juvenile Sooty Terns from the Glorioso Archipelago (0.05 mu g g(-1)). The highest levels were obtained for adult Barau's Petrels from Reunion Island (0.96 mu g g(-1)). An inter-site analysis of Sooty Tern showed higher mercury levels in birds nesting on Juan de Nova Island. Levels were low in comparison...
Tipo: Text
Palavras-chave: Tropical islands; Contamination; Bioaccumulation; Mercury; Trophic ecology; Marine birds.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3416.pdf

Trace elements in three marine birds breeding on Reunion Island (Western Indian Ocean): Part 1 - Factors influencing their bioaccumulation
Provedor de dados: 5
Autores: Kojadinovic, Jessica; Le Corre, M; Cosson, R.p.; Bustamante, Paco.
This work aimed to use seabirds as bioindicators of trace element levels in the tropical waters and food webs of the Western Indian Ocean. The accumulation patterns of selected toxic (Cd and Hg) and essential (Cu, Fe, Mn, Se, and Zn) elements were determined in liver, kidney, and pectoral muscle of 162 marine birds belonging to 3 species collected in Reunion Island between 2002 and 2004. These pelagic seabirds belong to the following species: Barau's Petrel (Pterodroma baraui), Audubon's Shearwater (Puffinus lherminieri bailloni), and White-Tailed Tropicbird (Phaethon lepturus). Hg levels were also measured in breast feathers. Highest mean kidney Cd and liver Hg levels (respectively, 27.79 +/- 13.78 mu g.g(-1) dry weight (dw) and 24.31 +/- 14.13 mu g.g(-1)...
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2488.pdf

Bioaccumulation of trace elements in pelagic fish from the Western Indian Ocean
Provedor de dados: 5
Autores: Kojadinovic, Jessica; Potier, Michel; Le Corre, Matthieu; Cosson, Richard P.; Bustamante, Paco.
Trace elements were analyzed in fish of commercial interest to determine their importance in marine systems of the Western Indian Ocean and their bioaccumulation patterns. The results are equivalent or lower than levels reported in ichthyofauna worldwide. Certain values of muscular Cd, Hg, Pb and Zn were, however, above thresholds for human consumption. Levels varied among tissues, species and fish length, but were seldom influenced by the nutritional condition of the fish, its gender and its reproductive status. Correlations between hepatic Hg and Se levels in Swordfish (r(2) = 0.747) and Yellowfin Tunas (r(2) = 0.226), and among metallothionein linking metals imply the existence of detoxification processes in these species. Level differences between fish...
Tipo: Text
Palavras-chave: Guidelines; Detoxification; Contamination; Fish; Metals.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2490.pdf