Investigation of acute toxicity of chlorpyrifos-methyl on guppy Poecilia reticulata

被引：22

作者：

Selvi, M ^{[1
]}

Sarikaya, R ^{[1
]}

Erkoç, F ^{[1
]}

Koçak, O ^{[1
]}

机构：

[1] Gazi Univ, Dept Biol Educ, TR-06500 Ankara, Turkey

来源：

CHEMOSPHERE | 2005年 / 60卷 / 01期

关键词：

chlorpyrifos-methyl; acute toxicity; guppy; Poecilia reticulata; bioassay; FQPA; behavioral effects;

D O I：

10.1016/j.chemosphere.2004.11.093

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Static bioassays were made to determine acute toxicity of chlorpyrifos-methyl, a wide spectrum organophosphorus insecticide and potential toxic pollutant of aquatic ecosystem, Guppy fish (Poecilia reticulata). Bioassays were made at a regulated temperature of 22 +/- 1 degrees C and were repeated three times. Lethal doses of the insecticides were determined using LC50 software programme of U.S. EPA based on Finney ' s Probit Analysis statistical method. The 96 h LC50 value and 95% confidence limit of chlorpyrifos-methyl for Guppy was estimated as 1.79 (1.47-2. 10) mg/l. The fish exposed to chlorpyrifos-methyl exhibited behavioral changes in the form of neurotoxin toxicity: less general activity than control group, loss of equilibrium, erratic swimming and staying motionless at a certain location generally at mid-water level for prolonged periods. The 1 mg/l (lowest) concentration had similar behavior (NOEC) with the control group. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：93 / 96

页数：4

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