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Multiresistant bacteria: Invisible enemies of freshwater mussels.
Saavedra, Maria José; Fernandes, Conceição; Teixeira, Amílcar; Álvarez, Xana; Varandas, Simone.
Afiliación
  • Saavedra MJ; CITAB-Inov4Agro, Centre for the Research and Technology of Agro-Environmental and Biological Sciences- Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production, University of Trás-os-Montes and Alto Douro, 5000-801, Vila Real, Portugal; CIIMAR/CIMAR, Interdisciplinary C
  • Fernandes C; CIMO, Mountain Research Center, ESA-Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal. Electronic address: conceicao.fernandes@ipb.pt.
  • Teixeira A; CIMO, Mountain Research Center, ESA-Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal. Electronic address: amilt@ipb.pt.
  • Álvarez X; University of Vigo, Agroforestry Group, School of Forestry Engineering, 36005, Pontevedra, Spain. Electronic address: xaalvarez@uvigo.es.
  • Varandas S; CITAB-Inov4Agro, Centre for the Research and Technology of Agro-Environmental and Biological Sciences- Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production, University of Trás-os-Montes and Alto Douro, 5000-801, Vila Real, Portugal; CIBIO/InBIO, Research Center in B
Environ Pollut ; 295: 118671, 2022 Feb 15.
Article en En | MEDLINE | ID: mdl-34902528
Freshwater mussels are among the most endangered groups of fauna anywhere in world. The indiscriminate use of antibiotics has led to the emergence of resistant strains. These antibiotic-resistant bacteria play a key role in increasing the risk allied with the use of surface water and in spread of resistance genes. Two endangered freshwater mussel species, Margaritifera margaritifera and Potomida littoralis, were sampled at 4 sampling sites along a 50 km stretch of River Tua. Water samples were taken at same sites. Of the total of 135 isolates, 64.44% (39.26% from water and 25.19% from mussels) were coliform bacteria. Site T1, with the lowest concentration of coliform bacteria, and site T2 were the only ones where M. margaritifera was found. No E. coli isolates were found in this species and the pattern between water and mussels was similar. P. littoralis, which was present at T3/T4 sites, is the one that faces the highest concentration of bacterial toxins, which are found in treated wastewater effluents and around population centers. Sites T3/T4 have the isolates (water and mussels) with the highest resistance pattern, mainly to ß-lactams. Water and P. littoralis isolates (T3/T4) showed resistance to penicillins and their combination with clavulanic acid, and to cephalosporins, precisely to a fourth generation of cephalosporin antibiotics. The analysis provides important information on the risk to water systems, as well as the need to investigate possible management measures. It is suggested that future studies on the health status of freshwater bivalves should incorporate measures to indicate bacteriological water quality.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bivalvos Aspecto: Patient_preference Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bivalvos Aspecto: Patient_preference Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido