Article
Environmental Sciences
Natalia Golin, Luiza Santos Barreto, Luise Esquivel, Tugstenio Lima de Souza, Mariana Gallucci Nazario, Andrea Pinto Oliveira, Cesar Castro Martins, Ciro Alberto de Oliveira Ribeiro
Summary: The Iguacu River basin is ecologically important due to its endemic fish species. However, chemical pollution poses a threat to this biodiversity. This study evaluated the toxic effects of the Iguacu and Jorda tilde o rivers, as well as their combination, on the embryo-larval phase of R. quelen. Mathematical modeling showed that fish exposed to Jorda tilde o River experienced the greatest population reduction, followed by the Iguacu River. The Jorda tilde o River was found to be most impacted by micro-pollutants.
Article
Environmental Sciences
Monike Felipe Gomes, Vinicius de Carvalho Soares de Paula, Lucia Regina Rocha Martins, Juan Ramon Esquivel Garcia, Flavia Yoshie Yamamoto, Adriane Martins de Freitas
Summary: The study assessed the toxicity of triclosan, triclocarban, and their binary mixture on catfish embryos at environmentally relevant concentrations. The results showed potential toxicity of these chemicals even at low concentrations and short exposure periods.
Article
Environmental Sciences
Rafael Shinji Akiyama Kitamura, Maiara Vicentini, Maiara Carolina Perussolo, Juliana Roratto Lirola, Camilla Freitas Cirilo dos Santos, Julio Cesar Moreira Brito, Marta Margarete Cestari, Maritana Mela Prodocimo, Marcelo Pedrosa Gomes, Helena Cristina Silva de Assis
Summary: This study investigated the sublethal effects of short-term exposure to different concentrations of Ciprofloxacin on Neotropical catfish. The results showed that Ciprofloxacin caused genotoxicity and adverse effects on hematological and histopathological parameters in the fish. These findings highlight the need for attention and monitoring of Ciprofloxacin concentrations in aquatic environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Eduardo Severo, Aline Marins, Charlene de Menezes, Mauro Nunes, Camila Murussi, Dennis Guilherme da Costa-Silva, Tamiris Rosso Storck, Osmar Damian Prestes, Martha Bohrer Adaime, Vania Lucia Loro, Barbara Clasen
Summary: Aquatic environments are impacted by pesticide use in agriculture, and in situ exposure is an alternative method to evaluate its effects on wildlife. In this study, Rhamdia quelen fish were used as bioindicators in an in situ experiment. After 96 hours of exposure in three different locations in Vacacai river, Southern Brazil, biochemical assays were conducted on the fish's brain, gills, liver, and muscles. Significant changes were observed in areas close to agricultural crops and urban areas, with elevated levels of carbonyl proteins in the brain, gills, and liver, disruptions in acetylcholinesterase activity in the muscle, and changes in glutathione S-transferase activity indicating potential contamination. R. quelen proved to be an effective bioindicator, responding to the environment they were inserted into.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Fisheries
Mariana Lins Rodrigues, Danielle Zanerato Damasceno, Ricacio Luan Marques Gomes, Bruno dos Santos Sosa, Evandro Bilha Moro, Eduardo Antonio Sanches, Fabio Bittencourt, Altevir Signor
Summary: The study showed that the probiotic additive had significant effects on reproductive variables of silver catfish, including seminal volume and spawning rates. Both male and female silver catfish benefited from the inclusion of probiotics, with improvements in internal fat accumulation and germ cell development observed.
AQUACULTURE RESEARCH
(2021)
Article
Agriculture, Dairy & Animal Science
Thales de Souza Franca, Itamar Cossina Gomes, Eduardo Antonio Sanches, Maritza Perez Atehortua, Nathalia Santos Teixeira, Romulo Batista Rodrigues, Thaiza Rodrigues de Freitas, Andrea Giannotti Galuppo, Monike Quirino, Jhony Lisboa Benato, Thales Lysakowski Flores Machado, Lis Santos Marques, Ivan Cunha Bustamante-Filho, Fernando Pandolfo Bortolozzo, Danilo Pedro Streit Jr
Summary: The study evaluated the effect of post-thaw dilution of Rhamdia quelen sperm on its quality and reproductive capacity. It found that post-thaw dilution improved sperm velocity, straightness, progression, and beat cross frequency. However, there were no differences in membrane integrity, mitochondrial activity, and normal larvae rate. Fertilization and hatching rates were higher in the post-thaw diluted samples compared to the control samples. Therefore, this dilution method can be included in the sperm cryopreservation protocol for R. quelen.
ANIMAL REPRODUCTION SCIENCE
(2022)
Article
Environmental Studies
Laima Cesoniene, Daiva Sileikiene, Midona Dapkiene
Summary: The study on 24 rivers in Lithuania revealed a significant impact of transit and agricultural pollution on the ecological status of rivers, with agricultural activities having the most pronounced negative influence on river ecosystems.
Article
Environmental Studies
Cathal O'Donoghue, Cathal Buckley, Aksana Chyzheuskaya, Stuart Green, Peter Howley, Stephen Hynes, Vincent Upton, Mary Ryan
Summary: This paper uses Ireland as a case study to investigate the relationship between rural economic activities and river water quality. Findings suggest that factors such as forestry level, industrial activity, intensity and type of agriculture, and wastewater treatment type in an area all play critical roles in influencing water quality. The study shows an improvement in the relationship between agriculture and water quality over time, particularly during periods with legislative measures and financial support aimed at improving water quality.
Article
Environmental Sciences
Julieta Peluso, Cristina S. Perez Coll, Dante E. Rojas, Diego Cristos, Carolina M. Aronzon
Summary: This study evaluated the sediment and water quality of five sites in the lower basin of the Paraná River, Buenos Aires, Argentina. It found that site S5, with high organic matter and low dissolved oxygen levels, had the most significant toxic effects on amphibians.
Article
Environmental Sciences
Jeane de Lima Costa Gomes, Aline Monique Blank do Amaral, Tamiris Rosso Storck, Bibiana Silveira Moraes, Vania Lucia Loro, Barbara Clasen
Summary: The study investigated the interactions between dietary supplementation with vitamin C antioxidant and exposure to herbicide ATZ in Rhamdia quelen fish. The results showed that supplementation with vitamin C can protect fish from the toxic effects of ATZ to some extent.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Ahiana Cassia de Oliveira Pedreira, Amanda Moreira Malacarne, Anna Cristina Strieder Dalmaso, Karen Izabela Freire Silva Carvalho, Tais Voelkl Chagas, Marcelo Iran Rodrigues da Silva Gambetta, Rogerio Jose Chiella, Robie Allan Bombardelli
Summary: The activation of cryopreserved sperm with L-carnitine solutions can improve sperm quality after thawing and maintain larval quality and production.
ANIMAL REPRODUCTION SCIENCE
(2022)
Article
Environmental Sciences
Damaso Angel Rubio-Vargas, Ciro Alberto de Oliveira Ribeiro, Francisco Filipak Neto, Alessandro Lick Cordeiro, Marta Margarete Cestari, Amanda Camara de Souza, Cesar de Castro Martins, Cleber Pinto da Silva, Sandro Xavier de Campos, Juan Ramon Esquivel Garcia, Maritana Mela Prodocimo
Summary: Urban sewage is a major source of contamination in aquatic systems, impacting the health of fish. Juvenile Oreochromis niloticus are susceptible to polluted waters from Iguacu River, making them a potential indicator species for water quality assessment.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2021)
Article
Environmental Sciences
Ayong Jiao, Wenqi Wang, Hongbo Ling, Xiaoya Deng, Junjie Yan, Fulong Chen
Summary: This paper selects the Tarim River Basin as a case study to analyze the impact of ecological water conveyance on desert riparian vegetation and hydrological elements. It constructs an ecological environment quality evaluation system and comprehensively evaluates the effect of ecological water conveyance on the damaged desert forest ecosystem. The research shows that ecological water conveyance has played a positive role in groundwater recharge and ecological restoration, providing important scientific reference for the protection and restoration of vegetation degradation in arid watersheds.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Zhaoxia Ye, Shifeng Chen, Qifei Zhang, Yongchang Liu, Honghua Zhou
Summary: The study showed that the area of Taitema Lake increased at a rate of 144% per year due to the Ecological Water Conveyance Project, causing the ecological water demand to vary with different flow years.
Article
Environmental Sciences
Elina Bennetsen, Sacha Gobeyn, Gert Everaert, Peter Goethals
Summary: Global river systems are under pressure due to human development, with the European Union proposing ecological status as the endpoint for management interventions. This paper introduces a novel method that combines monitoring data to identify key stressors in river systems and define management scenarios. By disassembling ecological status into individual components and using habitat suitability models, the method aims to optimize sustainable decisions in river management.
Article
Marine & Freshwater Biology
Nedia de Castilhos Ghisi, Crislei Larentis, Elton Celton de Oliveira, Mayara Pereira Neves, Arielli Giachini Zavaski, Aliciane de Almeida Roque, Catia Cappelli Wachtel, Ana Paula da Silva, Emanuele Barreto Stange de Lima, Giovanni de Oliveira Nagasawa Costa, Joao Paulo de Arruda Amorim, Ciro Alberto de Oliveira Ribeiro, Rosilene Luciana Delariva
Summary: The study evaluated the environmental impact on Neotropical streams in the Iguacu River basin, revealing higher pollution levels in agricultural and urban areas. Biomarker analysis showed a consistent increase in negative effects in anthropized areas.
Article
Environmental Sciences
Amanda Camara de Souza, Ana Caroline Cabral, Josilene da Silva, Renato Rodrigues Neto, Cesar C. Martins
Summary: The study presented the baseline levels, inventories, and risk assessment of PCBs and OCPs in surface sediment of the Doce River mouth before the rupture of the Fundao Dam. Results showed a low potential of PCBs and OCPs accumulation before the dam failure, with the decrease of Doce River flow being a main factor contributing to seasonal variations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Aluana Ariane Schleder, Sandro Froehner, Renato Lada Guerreiro, Lucilia Parron, Fabricio Hansel, Juan Sanez, Cesar de Castro Martins, Emanuel Maltempi, Eduardo Balsanelli
Summary: The distribution of n-alkanes in soda and freshwater lakes in Nhecolandia, Brazil was studied to assess the variation in organic matter. The results showed significant changes in n-alkanes distribution along the cores, with long carbon chain predominating in the upper parts and short carbon chain prevailing in the deepest parts. The study also found higher bacterial diversity in soda lakes compared to freshwater lakes, despite the extreme saline environment.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Ecology
Gabrielle Maria Fonseca Pierangeli, Mercia Regina Domingues, Rodrigo Brasil Choueri, Werner Siegfried Hanisch, Gustavo Bueno Gregoracci, Roseli Frederigi Benassi
Summary: Microbial communities in freshwater sediments play a crucial role in organic matter remineralization, biogeochemical cycles, and greenhouse gas emissions. This study investigated the spatial variation and environmental factors influencing bacterial and archaeal communities in eutrophic-hypereutrophic reservoir sediments in a tropical urban area in Brazil. The results showed distinct microbial communities in each reservoir, with better or worse water quality and proximity to a dam resulting in more significant variations. Pollution indicators, including total phosphorus, orthophosphate, electrical conductivity, and biochemical oxygen demand, influenced microbial communities. The study also revealed that spatial variations in environmental parameters contributed to microbial variations, ultimately affecting the abundant and rare bacterial and archaeal communities.
Article
Environmental Sciences
Rodolfo Leandro Nascimento, Paulo Ricardo Alves, Maikon Di Domenico, Adriane Araujo Braga, Paulo Cesar de Paiva, Marcos Tadeu D'Azeredo Orlando, Athur Sant'Ana Cavichini, Cybelle Menolli Longhini, Cesar C. Martins, Renato Rodrigues Neto, Caroline Fiorio Grilo, Kyssyanne Samihra Santos Oliveira, Valeria da Silva Quaresma, Eduardo S. Costa, Renata Caiado Cagnin, Cesar Alexandro da Silva, Fabian Sa, Leila de Lourdes Longo
Summary: The failure of the Fundao dam resulted in the leakage of a massive amount of tailings mud, which has had a long-lasting impact on the benthic macrofauna in the Doce River Shelf. This mud, along with organic pollutants and metal(oids), has significantly altered the composition of macrofauna in the affected areas, reducing species richness and diversity. Sediment variables, metal(oids)-IMS intersection, and mud have played important roles in structuring macrofauna composition on a broad spatial scale.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Natalia Golin, Luiza Santos Barreto, Luise Esquivel, Tugstenio Lima de Souza, Mariana Gallucci Nazario, Andrea Pinto Oliveira, Cesar Castro Martins, Ciro Alberto de Oliveira Ribeiro
Summary: The Iguacu River basin is ecologically important due to its endemic fish species. However, chemical pollution poses a threat to this biodiversity. This study evaluated the toxic effects of the Iguacu and Jorda tilde o rivers, as well as their combination, on the embryo-larval phase of R. quelen. Mathematical modeling showed that fish exposed to Jorda tilde o River experienced the greatest population reduction, followed by the Iguacu River. The Jorda tilde o River was found to be most impacted by micro-pollutants.
Article
Ecology
Tugstenio L. Souza, Tobias P. P. de Morais, Francisco Filipak Neto, Iracema Opuskevitch, Fernando C. A. S. Ferreira, Marco Antonio Ferreira Randi, Ciro Alberto de Oliveira Ribeiro, Claudemir de Souza, Maritana Mela Prodocimo
Summary: Aquatic biota is facing increased exposure to chemical pollutants from human activities, and the relationship between environmental pollution and fish reproduction is an ongoing concern. Vitellogenin (Vtg) is a biomarker used to assess xenoestrogen exposure in fish, and this study provides the first physicochemical characterization of Vtg from Oreochromis niloticus. The findings reveal important structural differences between two chemical forms of Vtg (VtgAb and VtgC) and contribute to the development of ecotoxicological immunoassays for studying endocrine disruption and fish reproduction.
Article
Environmental Sciences
Marines M. Wilhelm, Ana Caroline Cabral, Ana Lucia L. Dauner, Marina Reback Garcia, Rubens C. L. Figueira, Cesar C. Martins
Summary: This study aims to assess whether climatic and anthropogenic events promoted the variability of sedimentary organic matter (OM) in two estuarine systems, the Paranagua Estuarine System and Guaratuba Bay, Brazil, using geochemical multiproxies. The results showed a predominance of terrigenous OM in both estuarine systems over the last century, and sterols proved to be a more robust proxy for indicating changes in the autochthonous input of sedimentary OM. Climatic events did not seem to have imposed noticeable changes in the sedimentary OM, while OM variations may respond to changes in the drainage basin or to specific local human activities.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Environmental Sciences
Joelma Leao-Buchir, Tugstenio Lima de Souza, Claudemir de Souza, Luis Fernando Favaro, Patricia Manuitt Brito, Milena Carvalho Carneiro, Bruna Hilzendeger Marcon, Luise Esquivel, Ciro Alberto de Oliveira Ribeiro, Maritana Mela Prodocimo
Summary: The study investigated the effects of BDE-99 on Oreochromis niloticus, and found that it caused histopathological changes in the liver and kidney, increased acetylcholinesterase activity in muscle, disrupted the antioxidant system in the liver and brain, and decreased plasmatic levels of vitellogenin in females.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2023)
Article
Environmental Sciences
Bruno Martins Gurgatz, Marina Reback Garcia, Ana Caroline Cabral, Amanda Camara de Souza, Renata Hanae Nagai, Rubens C. L. Figueira, Michel Michaelovitch de Mahiques, Cesar C. Martins
Summary: Polycyclic aromatic hydrocarbons (PAHs) were analyzed in sediments of the Paranagu'a Estuarine System (PES) in South Brazil, using various source apportionment tools. The concentrations of PAHs ranged from < DL to 125.6 ng g-1 dw, indicating excellent environmental quality in the estuary. Principal component analysis showed that fine sediments and total organic carbon were the main factors controlling PAH concentrations. Multiple sources of PAHs were identified, with biomass burning and fossil fuel combustion being predominant, and petrogenic residues also observed. Adjacent watershed and deforestation in the local Atlantic Forest were found to contribute to PAH levels.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Cesar C. Martins, Jennifer K. Adams, Handong Yang, Alexander A. Shchetnikov, Maikon Di Domenico, Neil L. Rose, Anson W. Mackay
Summary: The Selenga River basin plays a crucial role in the Lake Baikal ecosystem and represents a major portion of its watershed. The Selenga Delta, one of the largest inland freshwater floodplains in the world, purifies river waters and supports endemic species. The Gusinoozersk region, a heavily industrialized area within the basin, has historically suffered from ecological damage.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
F. Y. Yamamoto, K. Onishi, T. R. Ralha, L. F. O. Silva, B. Deda, T. Y. C. Pessali, C. Souza, C. A. Oliveira Ribeiro, D. M. S. Abessa
Summary: The health risks to wild fish exposed to pollution from multiple sources are mainly caused by metal contamination from mining activities and organic contamination from other sources. The biomarkers response in fish is affected by seasonal variations. Integrating chemical data with suitable biomarkers is an effective strategy to assess ecological risks in the Doce River Basin. It is necessary to protect the river ecosystem and wildlife.
ENVIRONMENTAL POLLUTION
(2023)
Article
Pharmacology & Pharmacy
Aliciane de Almeida Roque, Francisco Filipak Neto, Claudia Cosio, Iris Barjhoux, Ciro Alberto de Oliveira Ribeiro, Damien Rioult
Summary: This study investigates the effects of pesticide exposure on human leukemia monocytic THP-1 cell line and reveals immunotoxicity, impaired cell metabolism, and polarization of macrophages towards a pro-tumor phenotype. These findings highlight the risk of pesticide exposure in the Brazilian population.
Article
Multidisciplinary Sciences
Sheisa F. d. Sierpinski, Luis Miguel Laglera Baquer, Cesar C. Martins, Marco Tadeu Grassi
Summary: This study investigated dissolved iron concentrations and speciation in surface seawater samples collected in Admiralty Bay, Antarctica during the austral summer of 2020. The technique of competitive ligand exchange/adsorptive cathodic stripping voltammetry was evaluated and found to be sensitive, with an LOD of 14 pmol L-1. The physicochemical parameters were consistent with previous studies, except for the higher temperature, possibly due to global warming. The relatively high iron concentrations suggest a local source of iron from upwelling sediments and ice-melting waters, which supports phytoplankton growth.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)
Article
Environmental Sciences
Aliciane de Almeida Roque, Jessica Zablocki da Luz, Michelle Thays Khun Santurio, Francisco Filipak Neto, Ciro Alberto de Oliveira Ribeiro
Summary: In this study, the effects of pesticides widely used in Brazil and their main metabolites on the malignancy of melanoma cells were investigated. The results showed that these chemicals modulate important parameters of tumor progression, such as gene expression related to tumor aggressiveness and multidrug resistance. These findings raise concerns about the increasing trend in pesticide use in Brazil and its potential negative impact on melanoma progression.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)