Article
Engineering, Civil
Elie Abrial, Rodrigo E. Lorenzon, Ana P. Rabuffetti, Martin C. M. Blettler, Luis A. Espinola
Summary: The Parana River is considered one of the top-ten major rivers in the world, with its upper basin significantly modified by agriculture expansion and dam construction during the past century. However, the middle and lower sections remain as some of the few free-flowing river reaches of this magnitude globally. The study examined hydrological characteristics from 1905 to 2019, analyzing changes in flow regime and connectivity processes in the Middle Parana River floodplain, and discussed potential implications on ecosystem functioning due to regional disturbances in the large river basin.
JOURNAL OF HYDROLOGY
(2021)
Article
Chemistry, Analytical
Marcelo Bevilacqua Remor, Marcio Antonio Vilas Boas, Silvio Cesar Sampaio, Sandra Regina Damatto, Jose Candido Stevaux, Ralpho Rinaldo dos Reis
Summary: The objective of this study was to reconstruct the history of sedimentation and nutrient accumulation in the Upper Parana River floodplain. The research found that flood pulses were the main regulating factor of sedimentation rate, and nitrogen was the limiting nutrient for productivity in the system.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Ecology
Rafaela V. Granzotti, Fernanda A. S. Cassemiro, Angelo A. Agostinho, Luis M. Bini
Summary: Research on 93 Neotropical fish species over 17 years at the Upper Parana River floodplain revealed that mean landscape occurrence and mean local abundance were the main predictors of temporal occupancy in all six lakes. Body size was also important in most lakes. The high concordance in predictor ranks suggests consistency in mechanisms of temporal occupancy across sites.
FRESHWATER BIOLOGY
(2021)
Article
Ecology
Gisela Mayora, Berenice Schneider, Maria Florencia Gutierrez
Summary: This study analyzed the foliar phenolic content of 16 common aquatic macrophyte species in the Middle Parana River floodplain and found that emergent macrophytes had a higher phenolic content than free-floating macrophytes. Additionally, species with higher phenolic content showed larger phenolic release and production of chromophoric dissolved organic matter. Ludwigia peploides, a species with high phenolic content, could have important implications for the functioning of the floodplain.
Article
Agriculture, Dairy & Animal Science
Salwa Mahmoud Abd-ELrahman, Ahmed Gareh, Hager Ibrahem Mohamed, Barakat M. Alrashdi, Ahmed Kamal Dyab, Manal F. El-Khadragy, Nady Khairy Elbarbary, Alamira Marzouk Fouad, Fatma A. El-Gohary, Ehab Kotb Elmahallawy, Sara Abdel-Aal Mohamed
Summary: This study examined the prevalence of parasitic infection in freshwater Nile tilapia in Assiut Governorate, Upper Egypt. The samples collected from different markets were analyzed using various detection techniques, and the associations between demographic factors and parasitic infection were investigated. The results showed a high occurrence of parasites among the fish, emphasizing the need for strict measures to control infection.
Article
Environmental Sciences
Taise Miranda Lopes, Carolina Mendes Muniz, Marcelo Henrique Schmitz, Rosa Maria Dias, Amanda Cantarute Rodrigues, Matheus Gimenez Buzo, Edivando Vitor do Couto, Angelo Antonio Agostinho
Summary: In freshwater ecosystems, flood pulses, connectivity between environments, and vegetation mosaic are the main variables affecting environmental structure. Local limnological conditions are more important for structuring river fish assemblages. However, these limnological characteristics can have combined impacts on the environment. This study evaluates the main drivers of fish trophic guilds in lakes and determines the importance of limnological conditions, spatial distance, and riparian vegetation. Limnological variables and riparian vegetation influenced the distribution of trophic guilds, especially during low water periods.
Article
Ecology
Maira Patricia Gayol, Natalia Soledad Morandeira, Eliana Belen Gonzalez, Patricia Kandus
Summary: This study investigated the relationship between macrophyte community structure and environmental features in the Lower Parana River floodplain, revealing that water ammonium and nitrate concentrations, turbidity, and flood frequency directly affected macrophyte assemblages. Connectivity between shallow lakes and watercourses influenced their physical and chemical features, while the dynamics of shallow lakes were associated with flood frequency, indirectly impacting macrophyte composition.
FRESHWATER BIOLOGY
(2022)
Article
Environmental Sciences
Natalia Soledad Morandeira, Matias Ernesto Barber, Francisco Matias Grings, Frank Ahern, Patricia Kandus, Brian Brisco
Summary: This study used full polarimetric RADARSAT-2 scenes to investigate the impact of double-bounce scatter in wetland ecosystems. The results showed that factors such as different incident angles and vegetation biomass play a significant role in radar backscattering variation.
Article
Geosciences, Multidisciplinary
Isabel T. Leli, Jose C. Stevaux
Summary: This study analyzes the morphological and evolutionary characteristics of the Upper Parana mega-river floodplain, characterizing it as polygenetic owing to the various formative processes involved. The floodplain is categorized into four types: inherited, bayfill, crest-and-trough, and mixed. The study also identifies three phases of floodplain formation and addresses tectonic interventions in the process.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Zoology
Cintia C. Palavecino, Maria C. Fantozzi, Pablo F. Cuervo, Leandro R. Antoniazzi, Pablo M. Beldomenico, Andrea L. Racca
Summary: This study aimed to evaluate the relationship between markers of anti-inflammatory and pro-inflammatory immune responses in wild rodents and their individual characteristics, parasite parameters, and seasonality. The expression levels of cytokines were determined using real-time reverse transcription-polymerase chain reaction, and the associations varied depending on individual variables and seasonality. The associations between ectoparasites and pro-inflammatory markers were influenced by season and endoparasite abundance, while the associations with anti-inflammatory responses depended on both age and season.
Article
Agriculture, Dairy & Animal Science
Marketa Pravdova, Jitka Kolarova, Katerina Grabicova, Michal Janac, Tomas Randak, Marketa Ondrackova
Summary: The impacts of pollutants on the aquatic environment have been a growing concern in recent decades. This study investigated the uptake of pharmaceutical compounds in common carp and the response of parasite communities to environmental changes caused by organic pollution. The results showed higher pollutant uptake and changes in fish biometric parameters and parasite load in the treatment group. These findings emphasize the importance of detailed taxonomic analyses when using parasites as bioindicators in environmental studies.
Article
Veterinary Sciences
Kamila Libano de Souza, Karine Cristine Almeida, Danielle Louisy Bahia dos Santos, Fernanda Pinto-Ferreira, Italmar Teodorico Navarro, Leticia Santos Balbino, Lucas Ferreira da Costa Furlan, Marina Szychta, Marcela Calciolari Branquinho, Margarete Kimie Falbo
Summary: In order to protect public health, prevent suffering, and find homes for dogs, free-roaming dogs are removed from the street by animal control divisions/shelters and NGOs. However, low adoption rates and a lack of humane control programs contribute to increased numbers of street dogs and overcrowding in shelters, compromising health and welfare.
JOURNAL OF APPLIED ANIMAL WELFARE SCIENCE
(2023)
Article
Biodiversity Conservation
A. C. Pereira, G. R. Colli
Summary: This study assessed the effects of human-modified landscapes on the body condition of Caiman crocodilus in the Araguaia floodplain. The results showed that caimans had better body condition in anthropogenic habitats, while wetland cohesion negatively affected their body condition. Caimans can adapt to human-modified landscapes, but it is important to incorporate natural and semi-natural habitat patches.
ANIMAL CONSERVATION
(2023)
Article
Multidisciplinary Sciences
Julia M. Falkenberg, Vitoria M. M. De Lima, Gustavo H. C. Vieira, Ana Carolina F. Lacerda
Summary: This study compiled existing information on metazoan parasites of Mugil curema in Brazil and included new records from the Cabedelo region. Eight out of 16 parasite taxa found in Cabedelo region are first host records for M. curema. Despite previous research on parasites of this fish species, there is still much to learn, especially due to its wide geographic distribution.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Environmental Sciences
P. J. Depetris
Summary: The Parana River is a multinational river with a vast drainage basin, containing a long and wide floodplain in its middle and lower stretches. During exceptional hydrological events, the river's water chemistry experiences significant changes, which are influenced by biogeochemical processes in the wetland and variations in hydrological stages.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Biology
Janaina Freitas Freire, Andre Mota Alves, Luiz Eduardo Roland Tavares, Claudia Moura de Melo, Veronica de Lourdes Sierpe Jeraldo, Ricardo Massato Takemoto, Rubens Riscala Madi
Summary: This study reported the first occurrence of Cybicola buccatus in the Spanish mackerel Scomberomorus brasiliensis in northeastern Brazil, providing a new record for the local parasite fauna. The presence of these parasites is important for researchers to further understand the distribution of this copepod and the parasitic fish fauna along the Brazilian coast.
Article
Parasitology
Philippe Alves, Alain de Chambrier, Jose L. Luque, Ricardo M. Takemoto, Luiz E. R. Tavares, Tomas Scholz
Summary: This study investigated tapeworms in pimelodid and other catfishes from South America using DNA sequencing, revealing their phylogenetic relationships and revising their classification. The study also corrected misidentification of tapeworm sequences deposited in the GenBank database.
PARASITOLOGY RESEARCH
(2021)
Review
Fisheries
Elida Jeronimo Gouveia, Lidiany Doreto Cavalcanti, Ricardo Massato Takemoto
Summary: This review summarizes studies of acanthocephalans in Brazilian fish farms, discussing histopathological and hematological implications of infection and various treatments for combating these parasites. Essential oils, oleoresins, and plant extracts have shown efficacy in early testing against acanthocephalans, suggesting potential use in commercial fish farms with recommended management practices outlined in the study.
AQUACULTURE RESEARCH
(2021)
Article
Engineering, Environmental
Atsler Luana Lehun, Amanda Brixner Mendes, Ricardo Massato Takemoto, Ana Carolina de Deus Bueno Krawczyk
Summary: The study analyzed the potential genotoxic effects of water quality in the Iguacu River on Astyanax bifasciatus and Geophagus brasiliensis, with higher nuclear abnormalities observed in fish erythrocytes at points with more environmental impact.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2021)
Article
Parasitology
Atsler Luana Lehun, Lidiany Doreto Cavalcanti, Maria de los Angeles Perez Lizama, Joao Otavio Santos Silva, Guilherme Pomaro Casali, Ricardo Massato Takemoto
Summary: This study evaluated the change in the endoparasite community of Prochilodus lineatus between two periods sampled 15 years apart in the Upper Parana River floodplain. The construction of dams had impacts on both the host and parasites, resulting in changes in parasite composition, and a correlation between environmental changes and parasite diversity and abundance was observed.
JOURNAL OF HELMINTHOLOGY
(2022)
Article
Parasitology
Aparecida de Fatima Cracco, Atsler Luana Lehun, Ricardo Massato Takemoto
Summary: This study analyzed the distribution and structure of the parasitic infracommunity of six species of Hypostomus from the Ivai River. The results showed that the parasites exhibited similar infection patterns in all hosts, but there were differences in parasite species composition among different hosts. Hypostomus cochliodon and H. regani had the highest parasite richness, while Hypostomus sp.1 and Hypostomus sp.2 showed low abundance and intensity of parasitic infections. However, Hypostomus sp.1 had the highest values of evenness. These findings contribute to the knowledge about the parasitic fauna of Hypostomus spp. from the Ivai River by presenting new hosts and locality records.
PARASITOLOGY RESEARCH
(2022)
Article
Parasitology
Mayara Destro Passere, Rodrigo Junio da Graca, Ricardo Massato Takemoto, Alessandra Valeria de Oliveira
Summary: This study molecularly characterized the digeneans found in gastropods from the Ival River in Brazil using the mitochondrial marker COI and the 28S ribosomal marker. The results showed high genetic similarity between the gastropods and Aylacostoma chloroticum using the COI marker, and identified four different taxa of parasites using both markers. The 28S ribosomal marker was more effective for identifying the parasites, suggesting the presence of two species among the four groups found. This study is the first to investigate the relationship between parasites and gastropods as intermediate hosts in the Ival River.
PARASITOLOGY RESEARCH
(2022)
Article
Fisheries
Atsler Luana Lehun, Joao Otavio Santos Silva, Gabriela Michelan, Fernando Miranda Lansac-Toha, Lidiany Doreto Cavalcanti, Ricardo Massato Takemoto
Summary: The structure of the food chain plays a crucial role in shaping the relationship between trophically transmitted endoparasites. The position and body size of each fish species in the food web can determine the presence and transmission of parasites. By analyzing a helminth dataset from 70 fish species in the upper Parana River floodplain, we found that the richness of fish parasites, both in the larval and adult stages, can be explained by body size and trophic level.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Parasitology
Lidiany Doreto Cavalcanti, Elida Jeronimo Gouveia, Gabriela Michelan, Atsler Luana Lehun, Joao Otavio Santos Silva, Wagner Toshio Hasuike, Marcia Regina Russo, Ricardo Massato Takemoto
Summary: This study analyzed the factors that affect the occurrence of the parasitic fauna D. oxycephala in Neotropical fish. It found that trophic level, position in the water column, and latitude influence the abundance of D. oxycephala. In addition, host ecological traits and latitude are also important components in the distribution and occurrence of this parasite.
PARASITOLOGY RESEARCH
(2023)
Article
Fisheries
Atsler Luana Lehun, Carolina Mendes Muniz, Joao Otavio Santos Silva, Lidiany Doreto Cavalcanti, Ricardo Massato Takemoto
Summary: In this study, the researchers investigated the predictive ability of functional traits, diet, and host phylogeny on the similarity of endoparasite composition in a fish assemblage in a Brazilian floodplain. The results showed that the host's diet had the greatest influence on the composition and similarity of endoparasites. Functional traits and phylogeny also had an effect, but to a lesser extent.
JOURNAL OF FISH BIOLOGY
(2023)
Article
Parasitology
Lucena Rocha Virgilio, Henrique Paulo Silva de Melo, Fabricia da Silva Lima, Ricardo Massato Takemoto, Luis Marcelo Aranha Camargo, Dionatas Ulises de Oliveira Meneguetti
Summary: This study evaluated parasite communities in a tropical floodplain in Brazil. The results showed higher species diversity in conserved environments, with significant seasonal variations in detritivorous and omnivorous hosts. The endoparasite fauna of piscivorous and omnivorous hosts in conserved environments exhibited unique characteristics, indicating the conservation status of these environments.
PARASITOLOGY RESEARCH
(2023)
Article
Multidisciplinary Sciences
Atsler Luana Lehun, Gisele S. C. Duarte, Ricardo M. Takemoto
Summary: This study investigated the potential use of Geophagus brasiliensis parasites as bioindicators of environmental changes. The results showed that the parasitic community of G. brasiliensis in polluted areas has low diversity, and the species compositions vary significantly between different sampling points.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)
Article
Parasitology
L. R. Virgilio, W. M. O. Martins, F. S. Lima, R. M. Takemoto, L. M. A. Camargo, D. U. O. Meneguetti
Summary: This study describes the endoparasite fauna in freshwater fish from the Upper Jurua in the Western Amazon, recording a total of 23,740 endoparasites belonging to 62 species, with 91 new host reports and 91 new occurrences for the Western Amazon. Nematoda and Digenea were the most diverse and abundant groups found in the study.
JOURNAL OF HELMINTHOLOGY
(2022)
Article
Parasitology
Aparecida de Fatima Cracco, Barbara Scorsim, Alessandra Valeria de Oliveira, Ricardo Massato Takemoto
Summary: This study reports the presence of Austrodiplostomum sp. parasitizing Hypostomus fish species in the Ivai River, Brazil, based on morphological and molecular analyses.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2022)
Article
Multidisciplinary Sciences
Juliana R. M. Ciccheto, Bruno H. M. Stabile, Thomaz M. C. Fabrin, Alessandra de Oliveira, Ricardo M. Takemoto, Rodrigo J. da Graca
Summary: This study reports the occurrence of Centrocestus formosanus in molluscs and fish in a urban park in southern Brazil, using an integrative taxonomic approach. The identification of C. formosanus in both hosts partially solved the life cycle of this parasite, highlighting the importance of monitoring and controlling molluscs populations.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)