Pesticide pollution in freshwater paves the way for schistosomiasis transmission.

Autor: Becker JM; Helmholtz Centre for Environmental Research - UFZ, Department System-Ecotoxicology, Permoserstrasse 15, 04318, Leipzig, Germany.; RWTH Aachen University, Department of Ecosystem Analysis, Institute for Environmental Research, Worringerweg 1, 52074, Aachen, Germany., Ganatra AA; International Centre of Insect Physiology and Ecology (icipe), Human Health department, P.O. Box 30772-00100, Nairobi, Kenya. aganatra@icipe.org.; Egerton University, Biological sciences, P.O Box 536-20115, Njoro, Kenya. aganatra@icipe.org., Kandie F; RWTH Aachen University, Department of Ecosystem Analysis, Institute for Environmental Research, Worringerweg 1, 52074, Aachen, Germany.; International Centre of Insect Physiology and Ecology (icipe), Human Health department, P.O. Box 30772-00100, Nairobi, Kenya., Mühlbauer L; Helmholtz Centre for Environmental Research - UFZ, Department System-Ecotoxicology, Permoserstrasse 15, 04318, Leipzig, Germany.; Ruprecht-Karl-University of Heidelberg, Faculty of Biosciences, Im Neuenheimer Feld 234, 69120, Heidelberg, Germany., Ahlheim J; Helmholtz Centre for Environmental Research - UFZ, Department System-Ecotoxicology, Permoserstrasse 15, 04318, Leipzig, Germany., Brack W; Helmholtz Centre for Environmental Research - UFZ, Department System-Ecotoxicology, Permoserstrasse 15, 04318, Leipzig, Germany.; RWTH Aachen University, Department of Ecosystem Analysis, Institute for Environmental Research, Worringerweg 1, 52074, Aachen, Germany., Torto B; International Centre of Insect Physiology and Ecology (icipe), Human Health department, P.O. Box 30772-00100, Nairobi, Kenya., Agola EL; Centre for Biotechnology Research and Development, Kenya Medical Research institute (KEMRI), P.O. Box 54840-00200, Nairobi, Kenya.; The Technical University of Kenya, P.O. Box 52428-00200, Nairobi, Kenya., McOdimba F; International Centre of Insect Physiology and Ecology (icipe), Human Health department, P.O. Box 30772-00100, Nairobi, Kenya.; Egerton University, Biological sciences, P.O Box 536-20115, Njoro, Kenya., Hollert H; RWTH Aachen University, Department of Ecosystem Analysis, Institute for Environmental Research, Worringerweg 1, 52074, Aachen, Germany.; Department Evolutionary Ecology and Environmental Toxicology, Institute of Ecology, Evolution and Diversity, Faculty Biological Sciences, Goethe University Frankfurt, Frankfurt, 60438, Germany., Fillinger U; International Centre of Insect Physiology and Ecology (icipe), Human Health department, P.O. Box 30772-00100, Nairobi, Kenya. ufillinger@icipe.org., Liess M; Helmholtz Centre for Environmental Research - UFZ, Department System-Ecotoxicology, Permoserstrasse 15, 04318, Leipzig, Germany. matthias.liess@ufz.de.; RWTH Aachen University, Department of Ecosystem Analysis, Institute for Environmental Research, Worringerweg 1, 52074, Aachen, Germany. matthias.liess@ufz.de.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2020 Feb 27; Vol. 10 (1), pp. 3650. Date of Electronic Publication: 2020 Feb 27.
DOI: 10.1038/s41598-020-60654-7
Abstrakt: Schistosomiasis is a severe neglected tropical disease caused by trematodes and transmitted by freshwater snails. Snails are known to be highly tolerant to agricultural pesticides. However, little attention has been paid to the ecological consequences of pesticide pollution in areas endemic for schistosomiasis, where people live in close contact with non-sanitized freshwaters. In complementary laboratory and field studies on Kenyan inland areas along Lake Victoria, we show that pesticide pollution is a major driver in increasing the occurrence of host snails and thus the risk of schistosomiasis transmission. In the laboratory, snails showed higher insecticide tolerance to commonly found pesticides than associated invertebrates, in particular to the neonicotinoid Imidacloprid and the organophosphate Diazinon. In the field, we demonstrated at 48 sites that snails were present exclusively in habitats characterized by pesticide pollution and eutrophication. Our analysis revealed that insensitive snails dominated over their less tolerant competitors. The study shows for the first time that in the field, pesticide concentrations considered "safe" in environmental risk assessment have indirect effects on human health. Thus we conclude there is a need for rethinking the environmental risk of low pesticide concentrations and of integrating agricultural mitigation measures in the control of schistosomiasis.
Databáze: MEDLINE
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