TY - JOUR
T1 - Mercury concentrations in Baja California Sur fish
T2 - Dietary exposure assessment
AU - Murillo-Cisneros, Daniela A.
AU - Zenteno-Savín, Tania
AU - Harley, John
AU - Cyr, Andrew
AU - Hernández-Almaraz, Pablo
AU - Gaxiola-Robles, Ramón
AU - Galván-Magaña, Felipe
AU - O'Hara, Todd M.
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/3
Y1 - 2021/3
N2 - Total mercury concentrations ([THg]) in muscle were determined in commercial finfish and elasmobranchs from Baja California Sur (BCS), Mexico to evaluate dietary Hg exposure for BCS communities, including the relationship of trophic ecology, length and mass with [THg] that might drive future consumption advice (e.g., recommend limited consumption of large fish for some species). The [THg] ranged from 0.06 to 528.02 μg kg−1 ww in finfish and 17.68–848.26 μg kg−1 ww in elasmobranchs. Relative to the consumption threshold set for predatory fish in Mexico, all species had a concentration below 1000 μg kg−1 ww. As expected, 16 (4.02%) and 75 (18.84%) individual fish were above advisory thresholds of 500 and 200 μg kg−1 ww, respectively. The hazard quotients (HQs) in most species were significantly <1.0, only banded guitarfish showed a significant median HQ > 1.0. Thus, the relative level of risk of high Hg exposure is low for most species.
AB - Total mercury concentrations ([THg]) in muscle were determined in commercial finfish and elasmobranchs from Baja California Sur (BCS), Mexico to evaluate dietary Hg exposure for BCS communities, including the relationship of trophic ecology, length and mass with [THg] that might drive future consumption advice (e.g., recommend limited consumption of large fish for some species). The [THg] ranged from 0.06 to 528.02 μg kg−1 ww in finfish and 17.68–848.26 μg kg−1 ww in elasmobranchs. Relative to the consumption threshold set for predatory fish in Mexico, all species had a concentration below 1000 μg kg−1 ww. As expected, 16 (4.02%) and 75 (18.84%) individual fish were above advisory thresholds of 500 and 200 μg kg−1 ww, respectively. The hazard quotients (HQs) in most species were significantly <1.0, only banded guitarfish showed a significant median HQ > 1.0. Thus, the relative level of risk of high Hg exposure is low for most species.
KW - Baja California Sur
KW - Elasmobranchs
KW - Fish
KW - Hazard quotient
KW - Mercury
UR - http://www.scopus.com/inward/record.url?scp=85098048537&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2020.129233
DO - 10.1016/j.chemosphere.2020.129233
M3 - Artículo
C2 - 33359982
AN - SCOPUS:85098048537
SN - 0045-6535
VL - 267
JO - Chemosphere
JF - Chemosphere
M1 - 129233
ER -