Article (Scientific journals)
Blood dynamics of mercury and selenium in northern elephant seals during the lactation period
Habran, Sarah; Debier, Cathy; Crocker, Dan et al.
2011In Environmental Pollution, 159 (10), p. 2523-2529
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Keywords :
Mirounga angustirostris; mercury; selenium; lactation
Abstract :
[en] The effects of reproduction and maternal investment (i.e., milk transfer) on trace element levels remain poorly understood in marine mammals. We examined the blood dynamics of mercury (Hg) and selenium (Se) during lactation in the northern elephant seal (Mirounga angustirostris), a top predator from the North Pacific Ocean. Total Hg and Se levels were measured in whole blood and milk of 10 mother-pup pairs on days 5 and 22 of lactation. Both Hg and Se were transferred to offspring through the milk. Results suggested that the maternal transfer of Se was prominent during lactation, whereas the Hg transfer was larger during gestation. The lactation period affected Hg and Se levels in the blood of elephant seal mothers and pups. Physiological processes and their relationship to body condition should be considered carefully when interpreting trace element levels in the framework of biomonitoring.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Habran, Sarah ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Debier, Cathy
Crocker, Dan
Houser, Dorian
Das, Krishna  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Language :
English
Title :
Blood dynamics of mercury and selenium in northern elephant seals during the lactation period
Publication date :
October 2011
Journal title :
Environmental Pollution
ISSN :
0269-7491
eISSN :
1873-6424
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
159
Issue :
10
Pages :
2523-2529
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 24 June 2011

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