Trace metals in target tissues and stomach contents of the top predator sailfish Istiophorus platypterus from the Eastern Pacific: concentrations and contrasting behavior of biomagnification.
Cadmium, lead, copper, and zinc were analyzed in the dorsal muscle, liver, gonad, and stomach contents of 67 sailfish, Istiophorus platypterus, from the Eastern Pacific. Muscle exhibited the following pattern (μg/g wet weight): Zn (15.05 ± 1.24) > Cu (0.461 ± 0.026) > Cd (0.434 ± 0.099) > Pb (0.025 ± 0.001); liver Zn (119.1 ± 7.6) > Cd (95.1 ± 11.0) > Cu (39.7 ± 2.6) > Pb (0.047 ± 0.004); and gonad Zn (96.8 ± 7.8) > Cd (2.16 ± 0.38) > Cu (2.08 ± 0.14) > Pb (0.033 ± 0.003). Significant (p < 0.05) correlations were observed between elements, length, and weight. I. platypterus feed mainly on fishes and cephalopods with variable concentrations (μg/g wet weight) of Cd (0.081-11.41), Pb (0.002-0.057), Cu (0.204-4.35), and Zn (3.23-86.6). Of the four analyzed elements, only Pb was biomagnified (BMF = 1.85). According to the regulatory limits, muscle exhibited Cd concentrations higher than the Official Mexican Standard, WHO, FDA (28 % of samples), and the European Union (40 %) regulations.
Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, C.P, 82000, Mazatlán, Sinaloa, Mexico.
Dalia
D
Moreno-Sierra
Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, C.P, 82000, Mazatlán, Sinaloa, Mexico.
Magdalena E
ME
Bergés-Tiznado
Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen S/N Col. Los Pinos, C.P, 82000, Mazatlán, Sinaloa, Mexico.
Fernando
F
Márquez-Farías
Instituto de Ecología, Pesquerías y Oceanografía del Golfo de Mexico, Universidad Autónoma de Campeche (EPOMEX, UAC), Campus 6. Av. Héroe de Nacozari #480, C.P, 24029, Campeche, Campeche, Mexico.|Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, P.O. Box 811, C.P, 82000, Mazatlán, Sinaloa, Mexico.
Yassir E
YE
Torres-Rojas
Instituto Tecnológico de Mazatlán, Corsario No. 203, Col. Urías, Mazatlán, C.P, 82070, Mazatlán, Sinaloa, Mexico.
Jorge R
JR
Ruelas-Inzunza
Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, C.P, 82000, Mazatlán, Sinaloa, Mexico. paezos@ola.icmyl.unam.mx.|Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, P.O. Box 811, C.P, 82000, Mazatlán, Sinaloa, Mexico. paezos@ola.icmyl.unam.mx.|Miembro de El Colegio de Sinaloa, Antonio Rosales 435 Pte, Culiacán, Sinaloa, Mexico. paezos@ola.icmyl.unam.mx.
Federico
F
Páez-Osuna
D000818:Animals; D005766:Gastrointestinal Contents / Q000737:chemistry; D019216:Metals, Heavy / Q000378:metabolism*; D008800:Mexico; D010473:Perciformes / Q000378:metabolism*; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical / Q000378:metabolism*
D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
Cadmium; Copper; Eastern Pacific; Gulf of California; Istiophorus platypterus; Lead; Zinc