TY - JOUR
T1 - Bioaccumulation and trophic transfer of potentially toxic elements in the pelagic thresher shark Alopias pelagicus in Baja California Sur, Mexico
AU - Lara, Ariagna
AU - Galván-Magaña, Felipe
AU - Elorriaga-Verplancken, Fernando
AU - Marmolejo-Rodríguez, Ana Judith
AU - Gonzalez-Armas, Rogelio
AU - Arreola-Mendoza, Laura
AU - Sujitha, S. B.
AU - Jonathan, M. P.
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/7
Y1 - 2020/7
N2 - Pelagic thresher shark (Alopias pelagicus) is a circumglobal species with high ecological and economic importance. Concentrations of mercury, selenium and cadmium in the muscle and liver tissues of A. pelagicus captured from Baja California Sur, Mexico were determined for assessing the potential human hazard. Results revealed that the average concentrations of Hg (0.76 mg kg−1) and Cd (0.18 mg kg−1) in muscle tissues were below the maximum permissible limits for human consumption. Se in the muscles were relatively low (mean: 0.30 mg kg−1−1) resulting in a molar excess of Hg over Se. Average levels of hepatic Cd were extremely higher than the maximum limit for consumption. Organotropism of Hg was muscle > liver, whereas Se and Cd presented an order of liver > muscle. Biomagnification Factor (BMF) emphasized the trophic transfer of elements. Selenium Health Benefit value was negative (−3.76) posing potential health risks demanding regular monitoring for health risks.
AB - Pelagic thresher shark (Alopias pelagicus) is a circumglobal species with high ecological and economic importance. Concentrations of mercury, selenium and cadmium in the muscle and liver tissues of A. pelagicus captured from Baja California Sur, Mexico were determined for assessing the potential human hazard. Results revealed that the average concentrations of Hg (0.76 mg kg−1) and Cd (0.18 mg kg−1) in muscle tissues were below the maximum permissible limits for human consumption. Se in the muscles were relatively low (mean: 0.30 mg kg−1−1) resulting in a molar excess of Hg over Se. Average levels of hepatic Cd were extremely higher than the maximum limit for consumption. Organotropism of Hg was muscle > liver, whereas Se and Cd presented an order of liver > muscle. Biomagnification Factor (BMF) emphasized the trophic transfer of elements. Selenium Health Benefit value was negative (−3.76) posing potential health risks demanding regular monitoring for health risks.
KW - Alopias pelagicus
KW - BMF
KW - Baja California Sur
KW - Mercury-selenium-cadmium
KW - Mexico
KW - Trophic transfer
UR - http://www.scopus.com/inward/record.url?scp=85083764393&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2020.111192
DO - 10.1016/j.marpolbul.2020.111192
M3 - Artículo
C2 - 32365003
SN - 0025-326X
VL - 156
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
M1 - 111192
ER -