Effects of copper sulphate on the survival of free-living stage of Schistocephalus coracidia

Shaibatul’ Islamiah Che Man, . and Asilah Abdul Mutalib, . and Zahidah Ab. Latiff, . and Zalina Ismail, . and Fazhana Ismail, . and Zunura’in Zahali2, . Effects of copper sulphate on the survival of free-living stage of Schistocephalus coracidia. pp. 28-35. ISSN 2672-7226

Heavy metals enter the water ecosystem from a different sources natural and anthropogenic. Among the heavy metals copper is one of the most harmful pollutants of aquatic ecosystems. In this study the effects of copper concentration (0.2 mg/L 2 mg/L and 20 mg/L) on a cestode parasite Schistocephalus solidus were tested. In this experiment newly-hatched coracidium were added to each 96-well flat bottom microtitre plates containing 100 L of copper at 0.2 mg/L 2 mg/L and 20 mg/L. Each coracidium was examined for survival at 1h intervals under a dissecting microscope. Death was confirmed when no swimming movement was visible during a 2 min observation and a change occured from transparent to opaque white colour. copper had a significant effect on the survival of S. solidus coracidia. Coracidia survived longer (30 h) when exposed to freshwater than in copper at concentration of 0.2 mg/L (21 h) 2 mg/L (22 h) and 20 mg/L (13 h). In conclusion copper generally enters from agricultural runoff through the deliberate use of copper as a pollution influenced reductions in coracidia survival which capable of producing failure in transmission to the next host. Changes in copper in aquatic environments can have implications for the parasite life cycle stages with potentially complex implications for life cycle dynamics.

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Abstract

Heavy metals enter the water ecosystem from a different sources natural and anthropogenic. Among the heavy metals copper is one of the most harmful pollutants of aquatic ecosystems. In this study the effects of copper concentration (0.2 mg/L 2 mg/L and 20 mg/L) on a cestode parasite Schistocephalus solidus were tested. In this experiment newly-hatched coracidium were added to each 96-well flat bottom microtitre plates containing 100 L of copper at 0.2 mg/L 2 mg/L and 20 mg/L. Each coracidium was examined for survival at 1h intervals under a dissecting microscope. Death was confirmed when no swimming movement was visible during a 2 min observation and a change occured from transparent to opaque white colour. copper had a significant effect on the survival of S. solidus coracidia. Coracidia survived longer (30 h) when exposed to freshwater than in copper at concentration of 0.2 mg/L (21 h) 2 mg/L (22 h) and 20 mg/L (13 h). In conclusion copper generally enters from agricultural runoff through the deliberate use of copper as a pollution influenced reductions in coracidia survival which capable of producing failure in transmission to the next host. Changes in copper in aquatic environments can have implications for the parasite life cycle stages with potentially complex implications for life cycle dynamics.

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Item Type:	Article
AGROVOC Term:	Cestodes
AGROVOC Term:	Parasites
AGROVOC Term:	Copper
AGROVOC Term:	Copper sulphate
AGROVOC Term:	Water pollution
AGROVOC Term:	Water quality
AGROVOC Term:	Calcium chloride
AGROVOC Term:	Magnesium chloride
AGROVOC Term:	Ecosystems
AGROVOC Term:	Heavy metals
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9223

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