RT info:eu-repo/semantics/article
T1 Comprehensive biological assessment of Asuncion Bay (Paraguay) : evaluating environmental health through zebrafish, Tradescantia, and macroinvertebrates biomarkers
A1 Kurita Oyamada, Hajime Guillermo
A1 Benítez Acuña, Arturo
A1 Báez, Laura
A1 Ramírez, Natalia
A1 Vega, Rocío
A1 Brítez López, Sady Camila
A1 Servin, Iván
A1 Vian Ramírez, César Daniel
A1 Avila, Martha
A1 Caballero Capdevila, Hernán
A1 Godoy, Gustavo
A1 Benítez Fernández, Mónica Diana
A1 Ferreira Benítez, Francisco Paulo
A1 Franco de Diana, Deidamia Mercedes
A2 Universidad Nacional de Asunción. Facultad de Ciencias Exactas y Naturales
AB This study presents, to our knowledge, the first ecotoxicological assessment in Paraguay combining multiple biomarkers from distinct biological levels (individual and community), including fish, plants, and macroinvertebrates. These findings revealed genotoxic effects in Tradescantia (Commelinacea, commonly known as spiderwort), as evidenced by significant micronucleus (MN) formation, suggesting potential genetic damage from sediment contaminants. Conversely, MN tests in zebrafish did not indicate genotoxicity, likely due to the limited bioavailability or short exposure duration. Sediment analysis did not detect polycyclic aromatic hydrocarbons. The macroinvertebrate community exhibited disturbances, with limited diversity of taxa associated with high organic matter content and low oxygen levels. While acute embryotoxicity was not observed, sublethal effects on aquatic biota cannot be ruled out. This study established crucial baseline data for future ecotoxicological studies, considering the ecological importance of Asuncion Bay and ongoing anthropogenic changes.
PB Oxford University Press
SN 0730-7268
YR 2025
FD 2025-06-28
LK http://hdl.handle.net/20.500.14066/4691
UL http://hdl.handle.net/20.500.14066/4691
LA eng
NO Kurita-Oyamada, H. G., Benitez Acuña, A., Baez, L., Ramirez, N., Vega, R., Britez, S. C., Servin, I., Vian Ramirez, C., Avila, M., Caballero Capdevila, H., Godoy, G., Benitez Fernandez, M. D., Ferreira, F. P., & Franco de Diana, D. (2025). Comprehensive biological assessment of Asuncion Bay (Paraguay): evaluating environmental health through zebrafish, Tradescantia, and macroinvertebrates biomarkers. Environmental Toxicology and Chemistry, Article vgaf167.https://doi.org/10.1093/etojnl/vgaf167
NO Corresponding author: Hajime G. Kurita-Oyamada. Email: guillermo.kurita@facenuna.edu.py.
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 04-sep-2026