Heavy Metal Accumulation in Four Species of Sea Turtles from the Baja California Peninsula, Mexico |
| |
Authors: | Susan C Gardner Sionnan L Fitzgerald Baudilio Acosta Vargas Lia Méndez Rodríguez |
| |
Institution: | (1) Centro de Investigaciones Biológicas del Noroeste, S.C., Mar Bermejo #195, Col. Playa Palo de Santa Rita. A.P. 128, C.P. 23090 La Paz, BCS, Mexico |
| |
Abstract: | Heavy metals were assessed in four species of sea turtles from the Baja California Peninsula, Mexico, representing the first
report of heavy metal concentrations in tissues of post-yearling sea turtles from the Eastern Pacific. Concentrations of Cd
measured in C. mydas kidney (653 μg/g dry wt) were the highest ever reported for any sea turtle species. Cd accumulated preferentially in kidney and the ratios
of kidney to liver Cd in Baja California turtles were among the highest reported for sea turtles globally. Zn, Ni, and Mn
concentrations were also significantly higher in kidney than other tissues, while Cu and Fe were greatest in liver, and all
metals were lowest in muscle. With the exception of one value (69.9 μg/g in kidney of C. caretta), Pb was low in all tissues from Baja California. In comparisons across species, kidney of C. mydas had greater Zn and Ni concentrations as compared to other species, although there was no difference in liver metal levels
among the species. Positive correlations were detected in the concentrations of Cd, Cu and Ni with the straight carapace length
of C. caretta. |
| |
Keywords: | Baja California peninsula cadmium heavy metals Mexico sea turtles |
本文献已被 SpringerLink 等数据库收录! |
|