在急性毒性试验中使用新生的梨形四膜虫（吉拉德，1850年） 。
Use of newborn Girardia tigrina (Girard, 1850) in acute toxicity tests.
作者信息
de Lucca C Preza D, Smith D H
机构信息
Departamento de Biologia, Universidade Federal da Bahia, 40. 170-290 Salvador, Bahia, Brazil.
出版信息
Ecotoxicol Environ Saf. 2001 Sep;50(1):1-3. doi: 10.1006/eesa.2001.2072.
PMID:11534945
Abstract
Acute toxicity tests, exposing Girardia tigrina to potassium dichromate (K(2)Cr(2)O(7)), showed good reproducibility. The 95% confidence intervals among tests were 0.0262+/-0.0141 g for 48-h LC(50) (N=6) and 0.0129+/-0.0078 g for 96-h LC(50) (N=5). The 96-h LC(50) for G. tigrina was below that of oligochaetes and above that of cladocera.
摘要
将梨形四膜虫暴露于重铬酸钾（K₂Cr₂O₇）的急性毒性试验显示出良好的可重复性。各试验间的95%置信区间为，48小时半数致死浓度（LC₅₀）为0.0262±0.0141克（N = 6），96小时半数致死浓度（LC₅₀）为0.0129±0.0078克（N = 5）。梨形四膜虫的96小时半数致死浓度低于寡毛纲动物，高于枝角类动物。
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