Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

被引：26

作者：

Frias-Espericueta, M. G. ^{[2
]}

Voltolina, D. ^{[1
]}

Osuna-Lopez, I. ^{[2
]}

Izaguirre-Fierro, G. ^{[2
]}

机构：

[1] UAS, CIBNOR Lab, Ctr Biol Res NW, Mazatlan 82000, Sinaloa, Mexico

[2] UAS, Fac Marine Sci, Environm Studies Lab, Mazatlan 82000, Sinaloa, Mexico

来源：

MARINE ENVIRONMENTAL RESEARCH | 2009年 / 68卷 / 05期

关键词：

Toxicity; Safe level; Metal mixtures; Litopenaeus vannamei; DAPHNIA-MAGNA STRAUS; GULF-OF-CALIFORNIA; AMMONIUM EXCRETION; OXYGEN-CONSUMPTION; SUBLETHAL TOXICITY; HEAVY-METALS; CADMIUM; ZINC; CRUSTACEA; DECAPODA;

D O I：

10.1016/j.marenvres.2009.06.011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

According to the literature, the safe level of a toxic substance for any given organism may be calculated from its median lethal concentration multiplied by a suitable application factor (AF: usually 0.1 and 0.01). The medial lethal concentrations for Litopenaeus vannamei postlarvae exposed to the mixtures in equitoxic proportions of Cd-Hg, Hg-Zn and Hg-Pb were close to one order of magnitude lower than the values calculated from individual toxicity tests, indicating a synergistic effect, while the mixture Cd-Zn showed an antagonistic effect. Exposure to the mixture of Cu, Fe, Mn, Zn, Cd, Hg and Pb caused 63.3% and 100% mortality after 21 and 13 days for 0.05 and 0.1 AF, showing that environmental safe concentrations of toxicants should not be calculated from individual toxicity tests. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：223 / 226

页数：4

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