Publications by authors named "F Pierezan"
Nile tilapia () and tambaqui () are the two most produced freshwater fishes in Brazil. This study investigated the potential pathogenicity of and , previously isolated from diseased Nile tilapia, to tambaqui. Experimental infection trials were conducted in juvenile tambaqui at a dose of approximately 10 CFU fish, assessing clinical signs, mortality, bacterial recovery, and histopathological changes.
View Article and Find Full Text PDFRetraction notice to "Effects of nanocapsules of poly-ε-caprolactone containing artemisinin on zebrafish early-life stages and adults" [Sci. Total Environ. 756 (2021) 143851].
Sci Total Environ
December 2024
Article Synopsis
- Chromatophoromas are neoplasms in fish, reptiles, and amphibians, with iridophoromas specifically affecting light-reflecting cells in Siamese fighting fish.
- In a study of 71 cases, 63% of the tumors were malignant, often invading nearby muscle or metastasizing, while the rest were confined to the skin and couldn't be firmly classified as benign or malignant.
- There was a notable occurrence of iridophoromas among young male fish, especially those with royal blue and fancy copper colors, suggesting a possible genetic link to the development of these tumors.
This study aimed to identify and characterize isolates of Francisella salimarina associated with an outbreak on a marine fish farm in Brazil and to analyse their genetic variability and antimicrobial susceptibility. In 2021, diseased cobias (Rachycentron canadum, n = 10) and dusky groupers (Epinephelus marginatus, n = 10) were sampled and subjected to bacteriological and pathological examinations. The isolates obtained were morphologically and biochemically characterized and identified by matrix-assisted laser desorption/ionization-time of flight (MALDI-ToF) and 16S rRNA gene sequencing.
View Article and Find Full Text PDFis a crucial pathogenic bacterium in tropical aquaculture. This bacterium was recently isolated from tambaqui (), a commercially important fish species in Brazil. This study assessed the antimicrobial susceptibility, pathogenicity, and genetic diversity of the tambaqui-derived isolates.
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