Trace Metals (Cd, Cu, Ni, and Zn) in Blood and Eggs of the Sea Turtle Lepidochelys olivacea from a Nesting Colony of Oaxaca, Mexico |
| |
Authors: | Federico Páez-Osuna María F Calderón-Campuzano Martín F Soto-Jiménez Jorge R Ruelas-Inzunza |
| |
Institution: | 1. Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, 82040, Mazatlán, Sinaloa, Mexico 2. Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, 82040, Mazatlán, Sinaloa, Mexico 3. Sección ambiental, Instituto Tecnológico de Mazatlán, P.O. Box 757, 82070, Mazatlán, Sinaloa, Mexico
|
| |
Abstract: | Trace metals (Cd, Cu, Ni, and Zn) concentrations were assessed in the sea turtle Lepidochelys olivacea from a nesting colony of Oaxaca, Mexico. Twenty-five female turtles were sampled, a total of 250 eggs were collected during
the “arribada” event of the 2005–2006 season. Zn concentrations were highest in the yolk 72.3 ± 10.9 μg/g dry weight (dw)]
and blood (58.4 ± 4.7 μg/g dw), whereas Ni concentrations were highest in the shell (48.5 ± 12.9 μg/g dw). The mean concentrations
of Cu, and Cd in the analyzed tissues were lower than those reported in other sea turtle species. However, Zn and Ni concentrations
in the yolk and shell, respectively, had the same distribution pattern observed at loggerhead and green turtles. On the basis
of one nesting season, the maternal transfer and/or the excretion rates of trace metals via eggs-laying, estimated in terms
of metal burdens in whole body, were 0.2, 7.8, 3.4, and 21.5% for Cd, Cu, Zn, and Ni, respectively. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|