OBSERVATIONS ON ACUTE TOXICITY OF EOMECON CHIONANTHA HANCE ALKALOIDS TO FISH
- VernacularTitle:血水草生物碱对鱼类毒性实验的观察
- Author:
Huazhong YANG
;
Qiongyao HUANG
;
Fei PENG
;
Nianmeng LIU
;
Fang FENG
;
Hui SUN
- Publication Type:Journal Article
- Keywords:
Eomecon Chionantha Hance;
Alkaloids;
Fish;
Acute toxicity test
- From:
Chinese Journal of Schistosomiasis Control
1989;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the acute toxicity of a plant-derived molluscicide Eomecon Chionantha Hance alkaloids ECA to fish. Methods The conventional tests of acute toxicity to fish were carried out at the laboratory. Results The Hypophthalmichthys molitrix mortality was zero under the concentration of 1. 25 mg/L for 96 hours, and 100% under the concentration of 20. 0 mg/ L. for 2 hours. LC50 of ECA to Hypophthalmichthys molitrix was 6. 457 mg/L for 2 h and the 95% confidence interval was 5. 289-7. 882 mg/L. The Cyprinus carpio mortality was zero under the con centration of 2. 5 mg/L for 96 hours, and 100% under the concentration of 20. 0 mg/L for 2 hours. LC50 of ECA to the Cyprinus carpio was 7. 244 mg/L for 2 hours and the 95% confidence interval was 5. 278-9. 954 mg/L. The Carassius auratus mortality was zero under the concentration of 1. 25 mg/L for 96 hours, and 100 % under the concentration of 20. 0 mg/L for 5 hours. LC50 of EGA to the Carassius auratus was 7. 080 mg/L for 5 hours and the 95% confidence interval was 5. 202 -9. 635 mg/L. Conclusion Toxicity of ECA to fish is lower than that of niclosamide. The EGA thus represents a promising plant-derived molluscicide which is worthy of further investigation.
