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The role of fish helminth parasites in monitoring metal pollution in aquatic ecosystems: a case study in the world's most productive platinum mining region.
Parasitol Res. 2020 Sep; 119(9):2783-2798.PR

Abstract

Due to the increasing consumption of platinum (Pt), especially in automobile exhaust catalysts, environmental concentrations of Pt are of emerging concern worldwide. Limited information exists on environmental concentrations, particularly in Pt mining regions, while South Africa is the world's main supplier of Pt. Moreover, other metals are also released as by-products of Pt mining, which might also cause environmental concern. Certain fish parasite taxa have the ability to accumulate metals orders of magnitude higher than their hosts and can be used to reliably detect metals with naturally low abundance. Studies on Pt accumulation in parasite-host systems are limited. Therefore, the aims of the present study were (1) to determine the accumulation of a variety of metals (cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), platinum (Pt), and zinc (Zn)) in helminth fish parasites compared with their hosts from a reference site and an impoundment impacted by Pt mining activities; (2) to assess whether there is a difference between bioaccumulation of metals in infected and uninfected hosts, as well as between hosts with different infection intensities; and (3) to compare the biomarker responses (acetylcholine esterase activity (AChE), metallothionein content (MT), catalase activity (CAT), reduced glutathione content (GSH), malondialdehyde content (MDA), protein carbonyls induction (PC), superoxide dismutase activity (SOD), and cellular energy allocation (CEA)) between infected and uninfected hosts. The cestode Atractolytocestus huronensis accumulated significantly higher concentrations of Cr, Ni, and Pt than their host Cyprinus carpio, while the nematode Contracaecum sp. accumulated significantly higher concentrations of Pt and Zn than their host Clarias gariepinus. Infected fish showed lower metal concentrations compared to uninfected fish, while the parasites had no significant effects on their hosts' biomarker responses. The parasites demonstrated the bioavailability of metals derived from Pt mining activities and their ability to resist its toxic effects. Thus, these parasites are promising sensitive accumulation indicators for Cr, Ni, Pb, and Pt contaminations from Pt mining activities.

Authors+Show Affiliations

Water Research Group, Unit for Environmental Sciences and Management, North-West University, 11 Hoffman St, Potchefstroom, 2520, South Africa. 22119809@nwu.ac.za.Water Research Group, Unit for Environmental Sciences and Management, North-West University, 11 Hoffman St, Potchefstroom, 2520, South Africa.Department of Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.Water Research Group, Unit for Environmental Sciences and Management, North-West University, 11 Hoffman St, Potchefstroom, 2520, South Africa. Department of Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.Water Research Group, Unit for Environmental Sciences and Management, North-West University, 11 Hoffman St, Potchefstroom, 2520, South Africa.Department of Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.Water Research Group, Unit for Environmental Sciences and Management, North-West University, 11 Hoffman St, Potchefstroom, 2520, South Africa.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32683559

Citation

Erasmus, Johannes H., et al. "The Role of Fish Helminth Parasites in Monitoring Metal Pollution in Aquatic Ecosystems: a Case Study in the World's Most Productive Platinum Mining Region." Parasitology Research, vol. 119, no. 9, 2020, pp. 2783-2798.
Erasmus JH, Wepener V, Nachev M, et al. The role of fish helminth parasites in monitoring metal pollution in aquatic ecosystems: a case study in the world's most productive platinum mining region. Parasitol Res. 2020;119(9):2783-2798.
Erasmus, J. H., Wepener, V., Nachev, M., Zimmermann, S., Malherbe, W., Sures, B., & Smit, N. J. (2020). The role of fish helminth parasites in monitoring metal pollution in aquatic ecosystems: a case study in the world's most productive platinum mining region. Parasitology Research, 119(9), 2783-2798. https://doi.org/10.1007/s00436-020-06813-1
Erasmus JH, et al. The Role of Fish Helminth Parasites in Monitoring Metal Pollution in Aquatic Ecosystems: a Case Study in the World's Most Productive Platinum Mining Region. Parasitol Res. 2020;119(9):2783-2798. PubMed PMID: 32683559.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The role of fish helminth parasites in monitoring metal pollution in aquatic ecosystems: a case study in the world's most productive platinum mining region. AU - Erasmus,Johannes H, AU - Wepener,Victor, AU - Nachev,Milen, AU - Zimmermann,Sonja, AU - Malherbe,Wynand, AU - Sures,Bernd, AU - Smit,Nico J, Y1 - 2020/07/18/ PY - 2020/02/07/received PY - 2020/07/09/accepted PY - 2020/7/20/pubmed PY - 2020/10/8/medline PY - 2020/7/20/entrez KW - Biomarker KW - Cestodes KW - Environmental parasitology KW - Metal bioaccumulation KW - Nematodes SP - 2783 EP - 2798 JF - Parasitology research JO - Parasitol Res VL - 119 IS - 9 N2 - Due to the increasing consumption of platinum (Pt), especially in automobile exhaust catalysts, environmental concentrations of Pt are of emerging concern worldwide. Limited information exists on environmental concentrations, particularly in Pt mining regions, while South Africa is the world's main supplier of Pt. Moreover, other metals are also released as by-products of Pt mining, which might also cause environmental concern. Certain fish parasite taxa have the ability to accumulate metals orders of magnitude higher than their hosts and can be used to reliably detect metals with naturally low abundance. Studies on Pt accumulation in parasite-host systems are limited. Therefore, the aims of the present study were (1) to determine the accumulation of a variety of metals (cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), platinum (Pt), and zinc (Zn)) in helminth fish parasites compared with their hosts from a reference site and an impoundment impacted by Pt mining activities; (2) to assess whether there is a difference between bioaccumulation of metals in infected and uninfected hosts, as well as between hosts with different infection intensities; and (3) to compare the biomarker responses (acetylcholine esterase activity (AChE), metallothionein content (MT), catalase activity (CAT), reduced glutathione content (GSH), malondialdehyde content (MDA), protein carbonyls induction (PC), superoxide dismutase activity (SOD), and cellular energy allocation (CEA)) between infected and uninfected hosts. The cestode Atractolytocestus huronensis accumulated significantly higher concentrations of Cr, Ni, and Pt than their host Cyprinus carpio, while the nematode Contracaecum sp. accumulated significantly higher concentrations of Pt and Zn than their host Clarias gariepinus. Infected fish showed lower metal concentrations compared to uninfected fish, while the parasites had no significant effects on their hosts' biomarker responses. The parasites demonstrated the bioavailability of metals derived from Pt mining activities and their ability to resist its toxic effects. Thus, these parasites are promising sensitive accumulation indicators for Cr, Ni, Pb, and Pt contaminations from Pt mining activities. SN - 1432-1955 UR - https://www.unboundmedicine.com/medline/citation/32683559/The_role_of_fish_helminth_parasites_in_monitoring_metal_pollution_in_aquatic_ecosystems:_a_case_study_in_the_world's_most_productive_platinum_mining_region_ L2 - https://dx.doi.org/10.1007/s00436-020-06813-1 DB - PRIME DP - Unbound Medicine ER -