TY - JOUR
T1 - Mercury and selenium in tissues and stomach contents of the migratory sailfish, Istiophorus platypterus, from the Eastern Pacific
T2 - Concentration, biomagnification, and dietary intake
AU - Bergés-Tiznado, Magdalena E.
AU - Fernando Márquez-Farías, J.
AU - Torres-Rojas, Yassir
AU - Galván-Magaña, Felipe
AU - Páez-Osuna, Federico
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015
Y1 - 2015
N2 - Mercury and selenium were assessed in the sailfish, Istiophorus platypterus, from the Eastern Pacific. Sixty-seven individuals were sampled, muscle, liver, kidney, gonads and the prey found in the stomach contents were isolated during fishing 2011-2013 tournaments. Hg exhibited the following pattern (μg g-1 wet weight): liver (0.57 ± 0.07) > muscle (0.56 ± 0.04) > kidney (0.44 ± 0.08) > gonad (0.14 ± 0.01). The maximum concentration of Se was found in kidneys (14.1 ± 1.9 μg g-1), and the minimum in muscles (0.67 ± 0.03 μg g-1). High Se:Hg ratios were found for muscle (4.1 ± 0.3), kidney (132.4 ± 12.1), liver (54.0 ± 4.4) and gonads (88.2 ± 7.9); Hg:Se molar ratios were several orders of magnitude lower (muscle < 0.4 and liver, kidney and gonad < 0.03). Sailfish feed mainly on fishes and cephalopods with low Hg levels (<0.13 μg g-1), these results indicate biomagnification of Hg and Se. The muscle of I. platypterus should be consumed (according the provisional tolerable weekly intake) by people cautiously so as not to exceed the recommended intake of 215 g per week.
AB - Mercury and selenium were assessed in the sailfish, Istiophorus platypterus, from the Eastern Pacific. Sixty-seven individuals were sampled, muscle, liver, kidney, gonads and the prey found in the stomach contents were isolated during fishing 2011-2013 tournaments. Hg exhibited the following pattern (μg g-1 wet weight): liver (0.57 ± 0.07) > muscle (0.56 ± 0.04) > kidney (0.44 ± 0.08) > gonad (0.14 ± 0.01). The maximum concentration of Se was found in kidneys (14.1 ± 1.9 μg g-1), and the minimum in muscles (0.67 ± 0.03 μg g-1). High Se:Hg ratios were found for muscle (4.1 ± 0.3), kidney (132.4 ± 12.1), liver (54.0 ± 4.4) and gonads (88.2 ± 7.9); Hg:Se molar ratios were several orders of magnitude lower (muscle < 0.4 and liver, kidney and gonad < 0.03). Sailfish feed mainly on fishes and cephalopods with low Hg levels (<0.13 μg g-1), these results indicate biomagnification of Hg and Se. The muscle of I. platypterus should be consumed (according the provisional tolerable weekly intake) by people cautiously so as not to exceed the recommended intake of 215 g per week.
KW - Biomagnification
KW - Diet composition
KW - Gulf of California
KW - Istiophorus platypterus
KW - Mercury
KW - Selenium
UR - http://www.scopus.com/inward/record.url?scp=84951311024&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2015.10.021
DO - 10.1016/j.marpolbul.2015.10.021
M3 - Artículo
SN - 0025-326X
VL - 101
SP - 349
EP - 358
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 1
ER -