TY - JOUR
T1 - Patterns of mercury and selenium in tissues and stomach contents of the dolphinfish Coryphaena hippurus from the SE Gulf of California, Mexico
T2 - Concentrations, biomagnification and dietary intake
AU - Bergés-Tiznado, Magdalena E.
AU - Fernando Márquez-Farías, J.
AU - Cristina Osuna-Martínez, C.
AU - Torres-Rojas, Yassir Edén
AU - Galván-Magaña, Felipe
AU - Páez-Osuna, Federico
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/1
Y1 - 2019/1
N2 - Selenium and mercury were evaluated in tissues and stomachs of the dolphinfish Coryphaena hippurus from two sites in the Southeastern Gulf of California. Hg levels were consistently low and exhibited the following patterns: muscle (0.14 ± 0.01 μg/g wet weight) followed by kidney (0.12 ± 0.02 μg/g), liver (0.11 ± 0.01 μg/g), and gonads (0.04 ± 0.00 μg/g). The maximum of Se was found in the kidney (5.60 ± 0.40 μg/g) and the minimum in muscle (0.60 ± 0.01 μg/g). All the Se:Hg molar ratios were between 3.7 and 697.1, with the minimum in muscle and the highest in gonads. The results indicate a contrasting behavior biomagnification of Hg and Se; smaller fish (<80 cm FL) did not exhibit biomagnification, in contrast with larger fish (>90 cm FL: 100% for Hg; 65% for Se). These results appear to be related to different feeding habits and availability of prey.
AB - Selenium and mercury were evaluated in tissues and stomachs of the dolphinfish Coryphaena hippurus from two sites in the Southeastern Gulf of California. Hg levels were consistently low and exhibited the following patterns: muscle (0.14 ± 0.01 μg/g wet weight) followed by kidney (0.12 ± 0.02 μg/g), liver (0.11 ± 0.01 μg/g), and gonads (0.04 ± 0.00 μg/g). The maximum of Se was found in the kidney (5.60 ± 0.40 μg/g) and the minimum in muscle (0.60 ± 0.01 μg/g). All the Se:Hg molar ratios were between 3.7 and 697.1, with the minimum in muscle and the highest in gonads. The results indicate a contrasting behavior biomagnification of Hg and Se; smaller fish (<80 cm FL) did not exhibit biomagnification, in contrast with larger fish (>90 cm FL: 100% for Hg; 65% for Se). These results appear to be related to different feeding habits and availability of prey.
KW - Biomagnification
KW - Coryphaena hippurus
KW - Gulf of California Mexico
KW - Mercury
KW - Molar ratios
KW - Selenium
UR - http://www.scopus.com/inward/record.url?scp=85056796339&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2018.11.023
DO - 10.1016/j.marpolbul.2018.11.023
M3 - Artículo
C2 - 30660317
SN - 0025-326X
VL - 138
SP - 84
EP - 92
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
ER -