Effects of copper sulphate on in vitro encystment of the cercariae of Echinostoma caproni

The effects of various concentrations of copper sulphate were studied on in vitro encystment of Echinostoma caproni in a Locke's–artificial spring water (ASW) (1:1) medium. Cercariae were killed in 10,000 mg l−1 CuSO4 in Locke's–ASW (1:1) within 24 h and extruded cystogenous material to pr...

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Bibliographic Details
Published in:Journal of helminthology 2004-12, Vol.78 (4), p.371-372
Main Authors: Fried, B., Schneck, J.L.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Anthelmintics - pharmacology
Autoecology
Biological and medical sciences
Copper Sulfate - pharmacology
Echinostoma - drug effects
Echinostoma - growth & development
Echinostoma - ultrastructure
Fundamental and applied biological sciences. Psychology
Life Cycle Stages - drug effects
Parasitology - methods
Protozoa. Invertebrata
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Summary:The effects of various concentrations of copper sulphate were studied on in vitro encystment of Echinostoma caproni in a Locke's–artificial spring water (ASW) (1:1) medium. Cercariae were killed in 10,000 mg l−1 CuSO4 in Locke's–ASW (1:1) within 24 h and extruded cystogenous material to produce an abnormal cyst wall. The ‘emergency response’ of encystment to high concentrations of copper reported for Parorchis acanthus cercariae did not occur in E. caproni. Concentrations of 1000 mg l−1 and 100 mg l−1 CuSO4 in Locke's–ASW (1:1) also killed the cercariae without encystment by 48 h. A concentration of 10 mg l−1 CuSO4 in Locke's–ASW (1:1) allowed for normal in vitro encystment within 48 h and these cysts were capable of excystation in a trypsin–bile salts medium.
ISSN:0022-149X
1475-2697
DOI:10.1079/JOH2004249