Article
Fisheries
Karen L. A. Guimaraes, Juan J. Rosso, Mariano Gonzalez-Castro, Mendelsohn F. B. Souza, Juan M. Diaz de Astarloa, Luis R. R. Rodrigues
Summary: A new species belonging to the Hoplias malabaricus complex from the Amazon basin in Brazil is described, and it is distinguished from other congeners by its characteristics, including morphometrics and DNA Barcoding. The study also provides an identification key to species of the H. malabaricus species complex.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Environmental Sciences
Jhonny Geovanny Garcia-Teh, Victor Manuel Vidal-Martinez, Ismael Marino-Tapia, Flor Arcega-Cabrera, Uriel Ordonez-Lopez, M. Leopoldina Aguirre-Macedo
Summary: The research found that different oceanographic conditions on the Yucatan continental shelf can lead to differences in parasite species, but not in parasite individuals. The Yucatan current has an impact on environmental variables. Overall, parasite metrics indicate a region with good ecosystem health influenced by oceanographic processes.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Immunology
Christiane Prosser, Karryn Gresty, John Ellis, Wieland Meyer, Karen Anderson, Rogan Lee, Qin Cheng
Summary: Deletion of histidine-rich protein genes pfhrp2/3 in Plasmodium falciparum leads to false-negative results in HRP2-based malaria rapid diagnostic tests. This study found high proportions of pfhrp2 deletion in P. falciparum infections from Nigeria, Sudan, and South Sudan, indicating a risk of false negatives. Low relatedness among gene-deleted parasites suggests independent emergence of deletions.
EMERGING INFECTIOUS DISEASES
(2021)
Article
Biodiversity Conservation
Zhifeng Ding, Huijian Hu, Marc W. Cadotte, Jianchao Liang, Yiming Hu, Xingfeng Si
Summary: The study found that bird taxonomic, functional, and phylogenetic diversity all exhibited hump-shaped patterns along the elevational gradient in the central Himalayas. Primary productivity was a good predictor of variation for most diversity metrics. Functional structure of bird communities was more clustered at mid-elevations while phylogenetic structure was more overdispersed at low and high elevations, with abiotic or habitat filtering likely governing the assembly processes.
Article
Ecology
Pedro Manuel Villa, Joao Augusto Alves Meira-Neto, Ecio Souza Diniz, Arshad Ali, Andreza Viana Neri, Sebastiao Venancio Martins, Primula Viana Campos, Herval Vieira Pinto-Junior, Jamerson Souza da Costa, Alex Joselio Pires Coelho, Francielli Bao, Graziela de Araujo Lima, Alessandro Rapini
Summary: This study examined the phylogenetic diversity and structure of tree communities during secondary succession in the Northern Amazon Forest. The results showed that soil-mediated filtering played a key role in shaping the phylogenetic structure and diversity, while stand age had no significant effect.
ECOLOGICAL ENGINEERING
(2023)
Article
Parasitology
Wagner Amanajas Cardoso, Livia Perles, Amanda Maria Picelli, Jamille Karina Coelho Correa, Marcos Rogerio Andre, Lucio Andre Viana
Summary: This study reports the occurrence of parasites belonging to the Hepatozoon genus in fish Hoplias aimara from the Eastern Amazon, and identifies the presence of cysts containing Hepatozoon cystozoites in free-living fishes for the first time.
PARASITOLOGY RESEARCH
(2022)
Article
Zoology
Karen L. A. Guimaraes, Juan J. Rosso, Mendelsohn F. B. Souza, Juan M. Diaz de Astarloa, Luis R. R. Rodrigues
Summary: This study conducted an integrative approach to characterize a population of H. malabaricus from the Amazon basin that shares mitochondrial lineage with H. misionera. Despite slight morphological variation, DNA barcoding and karyotype analysis suggest a strong similarity between the two populations. The discovery of H. misionera outside of its original habitat in the La Plata basin extends the species distribution by 2500 km northward to Marajo Island in the Amazon estuary.
NEOTROPICAL ICHTHYOLOGY
(2021)
Article
Public, Environmental & Occupational Health
Mariana Pinheiro Alves Vasconcelos, Juan Camilo Sanchez-Arcila, Luciana Peres, Paulo Sergio Fonseca de Sousa, Marcelo Augusto dos Santos Alvarenga, Julio Castro-Alves, Maria de Fatima Ferreira-da-Cruz, Marilza Maia-Herzog, Joseli Oliveira-Ferreira
Summary: A cross-sectional study was conducted in the Brazilian Amazon rainforest region to assess the prevalence and association between malarial and intestinal parasitic infections. The study found high prevalence of malaria, intestinal protozoan infection, and intestinal helminth infection. Polyparasitism was common, highlighting the need for comprehensive control measures.
JOURNAL OF INFECTION AND PUBLIC HEALTH
(2023)
Article
Immunology
Maria Muller, Juliana Naldoni, Lincoln L. Correa, Edson A. Adriano
Summary: This study describes two new Myxobolus species infecting the gills of Semaprochilodus insignis in the Brazilian Amazon. The morphological and genetic characteristics of these species were analyzed, with Myxobolus maiai n. sp. found in the gill filaments and Myxobolus iarakiensis n. sp. found in the gill arch. Phylogenetic analysis placed these novel species in a clade with parasites of Prochilodontidae hosts.
MICROBIAL PATHOGENESIS
(2022)
Article
Ecology
Marliese Truter, Kerry A. Hadfield, Nico J. Smit
Summary: This study investigated the parasitic communities of translocated populations of Clarias gariepinus in South Africa. Different parasitic taxa were found in the populations from the Riviersonderend River, Great Fish River, and Gariep Dam. The composition of parasite communities varied among the populations, indicating potential diverse sources of translocated C. gariepinus or suitable intermediate hosts in recipient ecosystems. The study also demonstrated the resilience of specialist parasite species in their persistence with the host and confirmed the loss of known parasite taxa in translocated populations.
INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE
(2023)
Article
Multidisciplinary Sciences
Carlos Nieto-Clavijo, Liliana Morales, Ricaurte Alejandro Marquez-Ortiz, Consuelo Romero-Sanchez, Alejandro Ramos-Casallas, Javier Escobar-Perez, Wilson Bautista-Molano, Juan Manuel Bello-Gualtero, Jacqueline Chaparro-Olaya
Summary: The role of Blastocystis in intestinal health differs between spondyloarthritis patients and control individuals, with potential effects on the gut microbiome composition in control individuals but not in SpA patients. The colonization of Blastocystis in control individuals leads to increased richness and diversity of the gut microbiome, while in SpA patients, it does not seem to have any impact. The gut microbiome of Blastocystis-positive SpA patients shows changes in taxonomic composition and metabolic pathways that may be related to antioxidant capacities and alleviation of inflammation.
SCIENTIFIC REPORTS
(2023)
Article
Biodiversity Conservation
Christopher G. Bousfield, Mike R. Massam, Carlos A. Peres, David P. Edwards
Summary: Selective logging is a major driver of tropical forest degradation. A study on the Amazon rainforest showed that while it has minimal impacts on tree beta-diversity across large spatial scales, it does cause substantial subtractive heterogenization in community composition for larger trees.
JOURNAL OF APPLIED ECOLOGY
(2023)
Article
Biology
Lauren N. Dykman, Carolyn K. Tepolt, Armand M. Kuris, Andrew R. Solow, Lauren S. Mullineaux
Summary: Habitat isolation and disturbance can affect parasite diversity. In this study, the authors compared parasite communities in different ecosystems and found that isolated and disturbed ecosystems had reduced parasite richness, but similar richness within host species. Surprisingly, the proportion of parasite species with indirect life cycles was not lower in the isolated and disturbed ecosystem.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Limnology
Tiago J. Pereira, Aula Vieira Castelloes, Sergio A. Netto
Summary: This study reveals that the deep-sea meiofauna community at the Brazilian Equatorial Margin is heavily influenced by the Amazon River. The richness and composition of meiofauna varied significantly among different deep ocean basins, with the Amazon basin supporting a distinct community. The quantidade and qualidade of organic material transported from the Amazon River to the Atlantic Ocean play a critical role in shaping the deep-sea communities.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Forestry
Zdenek Vacek, Jan Cukor, Stanislav Vacek, Tomas Vaclavik, Katerina Kybicova, Jan Bartoska, Karolina Mahlerova, Santiago Montoya Molina
Summary: Tick-borne diseases are a major health problem globally, particularly in Europe where tick species, especially the common tick, have become more prevalent. Changes in tick distribution, the emergence of new species, and increased abundance due to forest management and climate change have been observed. This study aimed to investigate the impact of tree species composition and forest structure on the abundance of the common tick in different forest stands in Czechia. The analysis of collected ticks on monitored research plots revealed that coniferous stands and forest edges with wild ungulate habitat signs had the highest tick abundance, while clear-cut biotopes and mixed stands had the lowest numbers. Factors such as vertical structure, tree species diversity, and complex stand diversity had a significant negative effect on tick abundance. Close-to-nature silviculture of mixed forests resistant to climate extremes could potentially reduce tick abundance and tick-borne diseases compared to standard coniferous monocultures.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Zoology
Marcos Tavares-Dias, Luis Mauricio Abdon Silva, Alexandro Cezar Florentino
Summary: This review investigates the infection and geographic distribution patterns of Clinostomum metacercariae in freshwater fish from Brazil based on information published over 91 years. The study found that C. marginatum and C. complanatum were the dominant species among the four Clinostomum species, and the prevalence and abundance of Clinostomum spp. varied in different host fish.
STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT
(2023)
Review
Fisheries
Marcos Tavares-Dias
Summary: This paper reviews the current knowledge on the use of sodium chloride in freshwater fish aquaculture and aquaria, covering aspects such as toxicity, growth, immunity, and antiparasitic treatment. It highlights the varying acute toxicity levels across different fish species and the potential benefits of using sodium chloride to reduce stress during fish transportation and control parasites.
AQUACULTURE RESEARCH
(2022)
Article
Fisheries
Dayna Filocreao Malheiros, Marcela Nunes Videira, Irlon Maciel Ferreira, Marcos Tavares-Dias
Summary: This study investigated the anthelmintic efficacy of Copaifera reticulata oleoresin and its nanoemulsion against monogeneans in Colossoma macropomum fish. The results showed that the therapeutic baths with C. reticulata oleoresin had a significant anthelmintic effect, while the baths with nanoemulsion had no efficacy. The fish exposed to the treatments also showed changes in their blood parameters and gill structure.
AQUACULTURE RESEARCH
(2022)
Article
Parasitology
Marcos S. B. Oliveira, Luiza Prestes, Edson A. Adriano, Marcos Tavares-Dias
Summary: The aim of this study was to investigate the microhabitat affinities of Ergasilus sp. and Therodamas longicollum on the gills of Leporinus fasciatus. The results showed that these two parasite species exhibit different distribution patterns along the gill arch of the host, and they compete without niche overlapping.
PARASITOLOGY RESEARCH
(2022)
Article
Fisheries
Juliano dos Santos Macedo, Carlos Eduardo Copatti, Emmanoel Vilaca Costa, Felipe Moura Araujo da Silva, Livia Macedo Dutra, Victoria Laysna dos Anjos Santos, Jackson Roberto Guedes da Silva Almeida, Marcos Tavares-Dias, Jose Fernando Bibiano Melo
Summary: This study aimed to investigate the effects of dietary supplementation with Citrus limon extract (CLE) on the growth and immune response of striped catfish juveniles. The results showed that adding 0.4 g CLE/kg feed improved the growth and immune resistance of striped catfish.
AQUACULTURE INTERNATIONAL
(2023)
Article
Zoology
Inacia Maria Vieira, Luiz Mauricio Abdon Silva, Alini Gomes Santiago de Almeida, Danilo Pelaes de Almeida, Orleno Marques Silva-Junior, Marcos Tavares-Dias
Summary: This study presents the freshwater and estuarine shrimp species in the state of Amap??, Brazil, based on data collected from crustacean collections and literature surveys. A total of 21 shrimp species were identified, including two new records for the state of Amap??. The study contributes to the knowledge of decapod crustaceans in the region.
Article
Biodiversity Conservation
Elvis Silva Lima, Cleydson Breno Rodrigues Dos Santos, Marcos Tavares-Dias
Summary: The study found that the structure of component communities and diversity of metazoan parasites from Colomesus asellus from the Amazon River are influenced by annual and seasonal variations. A total of 107 fish were collected during 2020 and 2021, and 932 metazoan parasites were recovered. The study also found differences in parasite component communities between years and between seasonal periods.
JOURNAL OF NATURAL HISTORY
(2023)
Article
Agronomy
Marcia Kelly Reis Dias, Eliane Tie Oba Yoshioka, Anselmo Fortunato Ruiz Rodriguez, Ricardo Amaral Ribeiro, Caio Pinho Fernandes, Rodrigo Otavio Almeida Ozorio, Marcos Tavares-dias
Summary: This study investigated the effects of dietary supplementation with Mansoa alliacea hydroalcoholic extracts on the growth and immune parameters of Arapaima gigas. The results showed that fish fed with 8 g kg-1 of extract had improved growth and innate immunity, as indicated by increased weight, feed efficiency, and immune-related markers. The supplementation of M. alliacea extract at 8 g kg-1 could potentially be beneficial in fish farming to control the development of Aeromonas hydrophila infections.
Article
Multidisciplinary Sciences
Marcos Tavares-Dias, Marcos S. B. Oliveira
Summary: This review examined the infestation patterns and geographic distribution of the Caligus Muller, 1785 species in teleost fishes, as well as the physiological and histopathological data and treatment strategies. The study analyzed 990 samples of Caligus spp. obtained from scientific papers on farmed and wild teleost species, and found that Carangidae had the highest occurrences. Caligus spp. were mainly found in marine environments, with only Caligus lacustris and Caligus epidemicus found in freshwater environments. The distribution of Caligus species varied across different countries, and histomorphological and hematological disorders caused by infestation were discussed.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)
Article
Parasitology
Elvis Silva Lima, Marcos Tavares-Dias
Summary: Our hypothesis was that annual and seasonal variations do not influence the structure and diversity of metazoan parasites of spinycheek sleeper in the Amazon River, Brazil. The study found five parasite species in 2020 and 2021, with larvae of Contracaecum sp. being the dominant taxon. The results showed higher parasite species richness and diversity index in 2021, but no significant differences between seasonal periods were observed.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2023)
Article
Parasitology
Dayna Filocreao Malheiros, Marcela Nunes Videira, Abthyllane Amaral Carvalho, Clara Brito Salomao, Irlon Maciel Ferreira, Kirley Marques Canuto, Eliane Tie Oba Yoshioka, Marcos Tavares-Dias
Summary: This study evaluated the efficacy of therapeutic baths with Carapa guianensis oil against monogeneans in tambaqui fish. The results showed that baths with 500 mg/L of C. guianensis oil had a high anthelmintic efficacy and caused minimal physiological changes in fish gill function. The study also observed hematological and histological changes in the treated fish.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2023)
Article
Parasitology
Marcos Tavares-Dias, Luis Mauricio Abdon Silva, Marcos Sidney Brito Oliveira
Summary: This study investigated the infection and geographic distribution patterns of monogenean species in native freshwater fish from Brazil. The results showed that the majority of parasite-host associations were found in the families Serrasalmidae, Characidae, Loricariidae, Curimatidae, and Anostomidae. The distribution of monogeneans was mainly limited to the Amazon River and Parana River basins.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2022)
Article
Parasitology
Luciano Pereira Negreiros, Vitoria Moura Carvalho, Tiago Araujo Lima, Eliane Xavier Sousa, Marcos Tavares-Dias
Summary: This study evaluated the anthelminthic efficacy of pumpkin and papaya seeds on monogeneans in Leporinus macrocephalus, as well as their effects on the host's hepatosomatic and splenosomatic index and condition factor. The results showed that feeding fish with papaya seeds had a higher efficacy in reducing the abundance of monogeneans, while feeding them pumpkin seeds resulted in a decrease in abundance. The hepatosomatic index was not affected by either treatment, but the splenosomatic index and condition factor decreased in fish fed with pumpkin seeds.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2022)
Article
Parasitology
Ivanildo Amanajas Brito-Junior, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias
Summary: The research aimed to investigate the ecology and diversity of parasitic communities and infracommunities of Geophagus altifrons in Rio Jari, Amapa, in the eastern Amazon region. The study found that most of the parasites exhibited an aggregated dispersion pattern and had low species richness. The component community of parasites consisted of both ectoparasites and endoparasites, with ectoparasites being predominant. The study also concluded that the body size of hosts had a minimal effect on the infracommunities of parasites.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2022)
Article
Parasitology
Odonei Moia Almeida, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias
Summary: Parasites play a crucial role in biodiversity, and understanding their relationship with hosts is essential for monitoring ecosystem changes. A study on metazoan parasites in Hemiodus unimaculatus from the jar' River in Brazil found a diverse parasite community with an aggregate dispersion pattern.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2021)