12 documents found, page 1 of 2
Multidrug-Resistant Escherichia coli Accumulated by Freshwater Bivalves: An Und...
Martins, Joana; Gonçalves, Ana; Fernandes, Conceição; Cabecinha, Edna; Monteiro, Sandra Mariza; Guedes, Hugo; Almeida, Gonçalo; Garcia, JulianaAs bioindicators, freshwater bivalves are crucial for the assessment of the contamination impact on different levels of biological integration. Escherichia coli is used as a bioindicator of water fecal contamination, representing a critical global concern, especially with the rise of multidrugresistant (MDR) strains. Phylogenetic diversity, pathotypic characterization, and antibiotic resistance profiles of E. c...
Enantioselective ecotoxicity of venlafaxine in aquatic organisms: Daphnia and z...
Ribeiro, Ondina; Félix, Luís; Ribeiro, Cláudia; Castro, Bruno B.; Tiritan, Maria Elizabeth; Monteiro, Sandra Mariza; Carrola, João SoaresVenlafaxine is a chiral antidepressant detected in aquatic compartments. It was recently included in the 3rd Watch List from the European Union. The present study aimed to investigate venlafaxine toxicity effects, targeting possible enantioselective effects, using two aquatic organisms, daphnia (Daphnia magna) and zebrafish (Danio rerio). Specimens were exposed to both racemate, (R,S)-venlafaxine (VEN), and to ...
Integrating ecosystem services into sustainable landscape management: a collabo...
Terêncio, D. P. S.; Fonseca, A. R.; Cortes, R. M. V.; Martinho, J.; Cabecinha, Edna; Pacheco, Fernando; Cabral, João; Santos, JoãoThe Paiva River is considered one of the least polluted rivers in Europe and its watershed has a high conservation value. However, the Paiva River basin suffers pressures related with recurrent disturbances in land use, such as forest fires, agricultural activities, urbanization and pressures that affect the natural hydromorphological conditions and the continuity of watercourses. Blue and Green Infrastructures...
Antimicrobial susceptibility profiles of multidrug-resistant aeromonads isolate...
Varandas, Simone; Fernandes, Conceição; Gomes, Sónia; Monteiro, Sandra Mariza; Cabecinha, Edna; Teixeira, Amílcar; Saavedra, Maria JoséThe inappropriate use of antibiotics, one of the causes of the high incidence of antimicrobial-resistant bacteria isolated from aquatic ecosystems, represents a risk for aquatic organisms and the welfare of humans. This study aimed to determine the antimicrobial resistance rates among riverine Aeromonas, taken as representative of autochthonous microbiota, to evaluate the level of antibacterial resistance in th...
The role of aquatic ecosystems (River Tua, Portugal) as reservoirs of multidrug...
Gomes, Sónia; Fernandes, Conceição; Monteiro, Sandra Mariza; Cabecinha, Edna; Teixeira, Amílcar; Varandas, Simone; Saavedra, Maria JoséThe inappropriate use of antibiotics, one of the causes of the high incidence of antimicrobialresistant bacteria isolated from aquatic ecosystems, represents a risk for aquatic organisms and the welfare of humans. This study aimed to determine the antimicrobial resistance rates among riverine Aeromonas spp., taken as representative of the autochthonous microbiota, to evaluate the level of antibacterial resistan...
Antimicrobial susceptibility profiles of multidrug-resistant aeromonads isolate...
Varandas, Simone; Fernandes, Conceição; Gomes, Sónia; Monteiro, Sandra Mariza; Cabecinha, Edna; Teixeira, Amílcar; Saavedra, Maria JoséExtensive use of water and anthropogenic activities contribute to water body pollution. Agricultural, urban, and animal waste, often characterized by numerous toxic and carcinogenic chemicals, pathogenic bacteria, and antibiotics, as well as antibiotic resistance genes (ARGs), loaded with microflora, can contaminate water and enter the food chain, posing a considerable danger to public health [1,2]. The inappro...
Antimicrobial resistance in aeromonads isolated from a tributary of River Douro...
Saavedra, Maria José; Fernandes, Conceição; Gomes, Sónia; Monteiro, Sandra Mariza; Cabecinha, Edna; Teixeira, Amílcar; Varandas, SimoneThe inappropriate use of antibiotics, one of the causes for high incidence of antimicrobial resistant bacteria isolated from aquatic environments, represents a danger for aquatic organisms and human health
Contribution to the study of copper toxicity in Gill of Nile Tilapia, Oreochrom...
Monteiro, Sandra MarizaO cobre é um micronutriente essencial que se encontra naturalmente em águas não poluídas. Contudo, as actividades mineira, agrícola e industrial, bem como a libertação de efluentes municipais, têm provocado a contaminação crescente dos sistemas aquáticos com níveis tóxicos de cobre. Consequentemente, a necessidade de desenvolver métodos expeditos para avaliar o impacto da toxicidade do cobre na qualidade ambien...
Changes in plasma electrolytes and gill histopathology in wild Liza saliens fro...
Fernandes, Conceição; Fontaínhas-Fernandes, A.; Monteiro, Sandra Mariza; Salgado, Maria AntóniaThe Esmoriz-Paramos is a lagoon of great ecological significance located on the Northwest coast of Portugal. The quality of water and sediment within this ecosystem has been gradually degraded due to the discharges of mostly untreated industrial waste and domestic sewage. Contaminants include heavy metals that can be taken up by fish from water, food, sediments, and suspended particulate material. Fish inhabiti...
Histopathological gill changes in wild leaping grey mullet (Liza saliens) from ...
Fernandes, Conceição; Fontaínhas-Fernandes, A.; Monteiro, Sandra Mariza; Salgado, Maria AntóniaThe histopathological changes are among the most recognized responses to environmental stressors, namely heavy metals. Liza saliens were sampled, in the Portuguese Esmoriz-Paramos coastal lagoon to assess their gill histopathological response to Cu and Zn contaminated sediments. A lesion prevalence index, severity, and extension scores of each lesion, as well as an assessment value (severity extension), were de...