Mercury and selenium in the filter-feeding whale shark (Rhincodon typus) from two areas of the Gulf of California, Mexico.
Bioaccumulation
Biomagnification
Biopsies
Gulf of California Mexico
Molar ratio of Hg and Se
Zooplankton
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Sep 2019
Sep 2019
Historique:
received:
18
12
2018
revised:
06
07
2019
accepted:
08
07
2019
pubmed:
21
8
2019
medline:
4
12
2019
entrez:
21
8
2019
Statut:
ppublish
Résumé
Mercury and selenium were measured for first time in the endangered species whale shark (Rhyncodon typus) from two areas of the Gulf of California, Bahía Los Angeles (BLA) and Bahía La Paz (LAP) using dermal biopsies of seventy specimens. Additionally, nineteen zooplankton samples from LAP were analysed. Concentrations (ng/g, wet weight (ww)) in biopsies of BLA ranged from 1 to 40 for Hg and 100 to 680 for Se; while in LAP varied from 1 to 9 for Hg and 11 to 850 for Se. A positive correlation was found for Hg in BLA males biopsies with length. Hg and Se concentrations in the zooplankton from LAP were 1.6 ± 1.8 and 770 ± 930 ng/g, respectively. Hg biomagnification factor ranged from 0.8 to 5.3 in sharks. A molar excess of Se over Hg was found in the biopsies and the zooplankton.
Identifiants
pubmed: 31426243
pii: S0025-326X(19)30548-X
doi: 10.1016/j.marpolbul.2019.07.017
pii:
doi:
Substances chimiques
Water Pollutants, Chemical
0
Mercury
FXS1BY2PGL
Selenium
H6241UJ22B
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
955-961Informations de copyright
Copyright © 2019. Published by Elsevier Ltd.