Ni Accumulation and Regulation After Experimental Exposure to a Cd, Pb, and Zn Mixture in the Pacific White Shrimp Penaeus vannamei

Núñez-Nogueira, Gabriel; Fernández-Bringas, Laura; Ordiano-Flores, Alfredo; Gómez-Ponce, Alejandro

Ni Accumulation and Regulation After Experimental Exposure to a Cd, Pb, and Zn Mixture in the Pacific White Shrimp Penaeus vannamei

2013

Núñez-Nogueira, Gabriel | Fernández-Bringas, Laura | Ordiano-Flores, Alfredo | Gómez-Ponce, Alejandro

Accumulation of metals in aquatic organisms is influenced by several factors, including the presence of other metals; therefore, there is a need to study the effects of mixtures of other metals on the accumulation of a particular metal on the organisms. In this study, the capacity for nickel (Ni) regulation by the juvenile decapod crustacean Penaeus vannamei was analyzed. The effects of both solely Ni exposure and in the presence of other metals such as zinc (Zn), lead (Pb), and cadmium (Cd) in a mixture were analyzed to determine any possible synergism. A previous study revealed that a metal mixture of Zn, Cd, and Pb without Ni induces a higher metal uptake in P. vannamei for all three metals, but in this study, no effect was observed for Ni. The results showed no change in the regulatory capacitance for Ni, even in the presence of other metals. The observed capacity of P. vannamei to regulate body concentrations of nickel prevents its use as a suitable biomonitor for this metal.

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