Article (Scientific journals)
Distribution of trace elements in organs of six species of cetaceans from the Ligurian Sea (Mediterranean), and the relationship with stable carbon and nitrogen ratios
Capelli, R.; Das, Krishna; De Pellegrini, R. et al.
2008In Science of the Total Environment, 390, p. 569-578
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Keywords :
marine mammals; stable isotopes; trace elements; Ligurian Sea; Mediterranean Sea
Abstract :
[en] Mercury (total and organic), cadmium, lead, copper, iron, manganese, selenium and zinc concentrations were measured in different organs of 6 different cetacean species stranded in an area of extraordinary ecological interest (Cetaceans’ Sanctuary of the Mediterranean Sea) along the coast of the Ligurian Sea (North-West Mediterranean). Stable-isotopes ratios of carbon (13C/12C) and nitrogen (15N/14N) were also measured in the muscle. A significant relationship exists between 15N/14N, mercury concentration and the trophic level. The distribution of essential and non-essential trace elements was studied on several organs, and a significant relationship between selenium and mercury, with a molar ratio close to 1, was found in the cetaceans’ kidney, liver and spleen, regardless of their species. High selenium concentrations are generally associated with a low organic to total mercury ratio. While narrow ranges of concentrations were observed for essential elements in most organs, mercury and selenium concentrations are characterised by a wide range of variation. Bio-accumulation and bio-amplification processes in cetaceans can be better understood by comparing trace element concentrations with the stable-isotopes data.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Zoology
Chemistry
Aquatic sciences & oceanology
Environmental sciences & ecology
Author, co-author :
Capelli, R.;  aDipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari - Università degli Studi di Genova - Via Brigata Salerno, 13 I-16147 Genova, Italy
Das, Krishna  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
De Pellegrini, R.;  aDipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari - Università degli Studi di Genova - Via Brigata Salerno, 13 I-16147 Genova, Italy
Drava, G.;  aDipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari - Università degli Studi di Genova - Via Brigata Salerno, 13 I-16147 Genova, Italy
Lepoint, Gilles  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Miglio, Cristiana;  aDipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari - Università degli Studi di Genova - Via Brigata Salerno, 13 I-16147 Genova, Italy
Minganti, V.;  aDipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari - Università degli Studi di Genova - Via Brigata Salerno, 13 I-16147 Genova, Italy
Poggi, R.;  Museo Civico di Storia Naturale “Giacomo Doria” - Via Brigata Liguria, 9 I-16121 Genova, Italy
Language :
English
Title :
Distribution of trace elements in organs of six species of cetaceans from the Ligurian Sea (Mediterranean), and the relationship with stable carbon and nitrogen ratios
Publication date :
2008
Journal title :
Science of the Total Environment
ISSN :
0048-9697
eISSN :
1879-1026
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
390
Pages :
569-578
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 27 November 2008

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