| Full text | |
| Author(s): |
Machado, Mauricio J.
;
Dextro, Rafael B.
;
Cruz, Renata B.
;
Cotta, Simone R.
;
Fiore, Marli F.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | AQUATIC TOXICOLOGY; v. 260, p. 4-pg., 2023-05-26. |
| Abstract | |
Microplastic pollution is a growing concern mainly in aquatic environments due to its deleterious effects. Some types of microplastics, such as glitter, remain overlooked. Glitter particles are artificial reflective microplastics used by different consumers within arts and handcraft products. In nature, glitter can physically affect phytoplankton by causing shade or acting as a sunlight-reflective surface, influencing primary production. This study aimed to evaluate the effects of five concentrations of non-biodegradable glitter particles in two bloom-forming cyanobacterial strains, Microcystis aeruginosa CENA508 (unicellular) and Nodularia spumigena CENA596 (filamentous). Cellular growth rate, estimated by optical density (OD), demonstrated that the applied highest glitter dosage decreases cyanobacterial growth rate with a more evident effect on M. aeruginosa CENA508. The cellular biovolume of N. spumigena CENA596 increased following the application of high concentrations of glitter. Still, no significant difference was detected in chlorophyll-a and carotenoids' contents for both strains. These results suggest that environmental concentrations of glitter, similar to the highest dosage tested (>200 mg glitter L 1), may negatively influence susceptible organisms of the aquatic ecosystems, as observed with M. aeruginosa CENA508 and N. spumigena CENA596. (AU) | |
| FAPESP's process: | 18/24049-2 - BIOGEOGRAPHY OF MICROBIAL COMMUNITIES IN SODA LAKES OF BRAZILIAN PANTANAL |
| Grantee: | Simone Raposo Cotta |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/14227-5 - Climatic changes and environmental impacts in wetlands of Pantanal region (Brazil): quantification, control factors and long term temporal modeling |
| Grantee: | Adolpho José Melfi |
| Support Opportunities: | Research Program on Global Climate Change - Thematic Grants |