INALI   02622
INSTITUTO NACIONAL DE LIMNOLOGIA
Unidad Ejecutora - UE
artículos
Título:
Concentration and environmental fate of ivermectin in floodplain wetlands: An ecosystem approach
Autor/es:
MONTALTO L.; MESA L. M.; PEREZ V.; GUTIÉRREZ, F.; LIFSCHITZ A.
Revista:
THE SCIENCE OF TOTAL ENVIRONMENT
Editorial:
Elsever
Referencias:
Año: 2020
ISSN:
0048-9697
Resumen:
Ivermectin (IVM) is commonly used for broad control of endo- and ecto- parasites in cattle. In wetlands of the Parana Medio River, cattle has been treated repeatedlywith IVMfor years and concerns have been raised on possible presence of the drug in these ecosystems. A field study was conducted to assess concentration of IVMin two wetlands subjected to different cattle use and frequency of IVM injection. Concentration of IVM in roots of macrophytes, Chironomus sp., Coelotanypus sp., Brachymesia furcata (larvae), Dero sp., Hyalella sp., Hirudinea, Planorbidae, Boana pulchella (larvae), Aphyocharax anisitsi and Serrapinnus calliurus were shown for the firsttime. Total concentration of IVM in the wetlands, and concentration in cattle manure, sediment, water and macrophytes increased with the number of treated cattle and frequency of IVM injections. Accumulation of IVM in aquatic assemblages is alarming because these organisms fulfill a key role in food webs, constituting a serious risk to human health. Management strategies should be implemented by farmers to keep recently treated animals away from watercourses to reduce the introduction of IVM into aquatic systems.