MARIA DO PERPETUO SOCORRO PROGENE VILHENA
@novo.ufra.edu.br
instituto Socioambiental dos Recursos Hídricos
Universidade Federal Rural da Amazônia
RESEARCH, TEACHING, or OTHER INTERESTS
Agricultural and Biological Sciences, Biochemistry, Genetics and Molecular Biology, Biotechnology
Scopus Publications
Scopus Publications
Richard Bruno Mendes-Freire, Maria do Pérpetuo Socorro Progene Vilhena, William Kalhy Silva Xavier, Helen Maria Pontes Sotão, and Adriene Mayra da Silva Soares
Springer Science and Business Media LLC
Nayana Moraes de Sena, Jhonata Eduard, Camila Maria Barbosa Pereira, Maria do Perpetuo Socorro Progene Vilhena, José Francisco Berrêdo Reis da Silva, José Ledamir Sindeaux Neto, and Michele Velasco
FapUNIFESP (SciELO)
Abstract Parasites of the phylum Apicomplexa are among the main etiological agents of diseases in vertebrates and invertebrates, including humans and domestic animals. In the present study, 18 specimens of Pygocentrus nattereri (red piranha) captured in Lagoa do Sacaizal, municipality of Pracuúba, state of Amapá, were analyzed. Of these, 6 (33%) had whitish spots on their liver lobes. Clusters of Calyptospora sp. oocysts measuring 18.1 ± 0.5 (17.4-18.7) µm in diameter, with four pyriform sporocysts measuring 9.0 ± 0.45 (8.3-9.8) µm in length and 4.3 ± 0.50 (3.7-5.1) µm in width, each with two sporozoites. Histopathological evaluation indicated the presence of oocysts adjacent to blood vessels and in the hepatopancreas, promoting necrosis, degeneration, and tissue fibrosis associated with inflammatory infiltrate and melanomacrophage bodies. This is the first record of coccidia parasitizing P. nattereri.
Jhonata Eduard, Camila Maria Barbosa Pereira, Maria do Perpétuo Socorro Progene Vilhena, José Francisco Berredo, Evonnildo Costa Gonçalves, José Ledamir Sindeaux-Neto, and Michele Velasco
Elsevier BV
Daniel Fernandes Rodrigues Barroso, José Francisco Berrêdo, Marcia Aparecida Da Silva Pimentel, Maurício Do Nascimento Moura, Rony Peterson Santos Almeida, Marcelo Cordeiro Thalês, and Maria do Perpétuo Socorro Progene Vilhena
Revista Brasileira de Geografia Fisica
O cacaueiro (Theobroma cacao L.) é uma planta originária do continente americano, a qual exigem clima quente e úmido com temperaturas médias anuais não inferior a 21°C e precipitação satisfatória entre 1.500 mm a 2.500 mm anuais. O objetivo do presente trabalho foi avaliar os efeitos de variáveis hidroclimáticas (precipitação, umidade do ar, temperatura e cota máxima do rio Tocantins) sobre a produção de cacau do município de Mocajuba. Utilizou-se um banco de dados com séries temporais de 32 anos (1990 a 2021) das variáveis analisadas disponíveis em diferentes fontes, que foram submetidas a estatística descritiva, análise de permutação multivariada, análise de componentes principais e modelo linear generalizado. Os resultados obtidos permitiram identificar tendência de aumento precipitação e temperatura no período amostral e redução da umidade do ar e análise de permutação multivariada identificou influência das variáveis sobre a produção de cacau, enquanto que o modelo linear generalizado indicou que a temperatura é a única variável ambiental que influencia positivamente a produção de cacau e que um aumento de 1ºC na temperatura, resulta num aumento 120 toneladas de grãos de cacao. Nas condições atuais, o municipio de Mocajba preserva as características edafoclimáticas para a cultura do cacau, porém, há uma tendência de aumento de temperatura com redução da umidade do ar que poderá prejudicar as lavouras de cacau de Mocajuba, caso essas variáveis seguirem essa tendência.
Camila Maria Barbosa Pereira, Jhonata Eduard, José Francisco Berrêdo Reis da Silva, Maria do Perpétuo Socorro Progene Vilhena, José Ledamir Sindeaux Neto, and Michele Velasco
Elsevier BV
Vitória Pinto Farias, Maria do Perpétuo Socorro Progene Vilhena, Antonio Walison Gondim-Vieira, Richard Bruno Mendes-Freire, Renan Domingues Pacheco, Braian Saimon Frota da Silva, and Adriene Mayra da Silva Soares
MDPI AG
Macrofungi are key decomposers of organic matter and play an active role in biogeochemical cycles, thereby contributing to carbon sequestration in forest ecosystems. Floodplain forests (várzeas) are characterized by the dynamics of rising and receding waters, which are rich in suspended material and influence species variation and adaptation. The knowledge about the distribution of macrofungi in várzea environments in the Brazilian Amazon is limited. This study aims to evaluate the diversity and composition of macrofungi on three várzea forest islands, while also examining differences in species richness and abundance between seasonal periods. A total of 88 macrofungal species that belong to the phylum Basidiomycota were identified. The findings revealed significant variations in species composition, yet no notable differences in species richness or abundance were observed between the seasonal periods. The environmental conditions and resources available to macrofungi appear to be consistent among the islands, which leads to a balanced diversity. However, additional research is essential to uncover the true distribution patterns of macrofungi in the várzeas of the Brazilian Amazon, an area under significant threat to its biodiversity.
Sabrina Oriana de Souza Begot da Rocha, Maria do Perpétuo Socorro Progene Vilhena, Jesus Nazareno Silva de Souza, César R. Balcázar-Zumaeta, Efraín M. Castro-Alayo, Alexa J. Pajuelo-Muñoz, Braian Saimon Frota da Silva, Maria José de Souza Trindade, Gilson C. A. Chagas-Junior, and Nelson Rosa Ferreira
MDPI AG
This study evaluated the impact of different fermentation boxes on the nutritional and antioxidant composition of dried lowland cocoa beans (Theobroma cacao L.), a characteristic product of some producers in the Amazon region. The analysis included ash content, moisture content, pH, titratable acidity, proteins, lipids, flavonoids, antioxidant activities (DPPH, ABTS, and FRAP), and mineral composition. Four types of fermentation boxes were assessed: a projected hexagonal box (PHB), square box (SB), basket (HP), and local square box (LSB). Statistical analyses included ANOVA, Tukey’s test, and Fisher’s LSD test to compare mean differences, while Principal Component Analysis (PCA) identified key contributors, including potassium and magnesium. Spearman correlation analysis revealed significant relationships between soil and almond nutrient profiles. The HP bed exhibited superior phenolic concentration, antioxidant activity, centesimal composition, and potassium and magnesium content. Despite its shorter fermentation period, the LSB bed met quality standards, while the PHB and SB showed intermediate results. Mineral analysis confirmed no toxicological risks, suggesting the beans are safe and enriched with floodplain minerals. These findings emphasize the importance of fermentation methods in determining cocoa bean quality and provide a framework for optimizing processes to enhance their nutritional and functional properties.
RICHARD B. MENDES-FREIRE, MARIA DO PERPÉTUO S. P. VILHENA, and ADRIENE M. DA SILVA SOARES
Magnolia Press
Fulvifomes is a monophyletic genus of Hymenochaetaceae (Basidiomycota), with a cosmopolitan distribution and ecological importance. Specimens of Fulvifomes were collected from floodplain forest islands in the Brazilian Amazon. Morphological and molecular phylogenetic analyses revealed a new species, Fulvifomes paraensis sp. nov., mainly characterized by its pileate basidioma, broadly attached to dimidiate, hyphal system monomitic in context to subdimitic in trama, and basidiospores broadly ellipsoid to subglobose. This species was found on dead trunks of Mora paraensis, a tree species that is endemic to floodplain areas of the eastern Amazon. Additionally, Fulvifomes kawakamii is reported for the first time in floodplain forests. Notes and illustrations for these two species, and an identification key for the species of Fulvifomes with molecular data from Brazil are provided.
Ana Karolina de Souza Mendes, Maria do Perpetuo Socorro Progene Vilhena, Michele Velasco Oliveira Silva, José Francisco Berrêdo, Marcondes Lima da Costa, and Maria José de Sousa Trindade
Elsevier BV
Maria P.S.P. Vilhena, Marcondes L. Costa, José F. Berrêdo, Rosildo S. Paiva, and Marcelo Z. Moreira
Elsevier BV
Jhonata Eduard Farias de Oliveira, Rayline Thaimenne Alves Figueredo, José Ledamir Sindeaux-Neto, Maria do Perpétuo Socorro Progene Vilhena, José Francisco Berrêdo, Edilson Matos, and Michele Velasco
FapUNIFESP (SciELO)
Abstract Calyptospora species are coccids that commonly cause liver infections in fish all around the world. This paper describes the morphology and histopathological characteristics of liver infection caused by Calyptospora sp. in black piranha Serrasalmus rhombeus, from the Capim River, in the municipality of Ipixuna do Pará, state of Pará (Brazil). Specimens were collected, analyzed and necropsied and tissue fragments containing parasites were prepared for histology and scanning electron microscopy. Parasitism was detected in 33.0% of the analyzed specimens, which had spherical oocysts in the liver, with four pyriform sporocysts presenting sporozoites internally. A histological examination revealed oocysts positioned close to blood vessels, causing necrosis and degeneration of hepatic parenchyma, while the presence of mononuclear cell infiltrate and melanomacrophages indicated the onset of an inflammatory process. This is the first record of the genus Calyptospora in fish from the Capim River.
Rayline Thaimenne Alves Figueredo, Jhonata Eduard Farias de Oliveira, Maria do Perpétuo Socorro Progene Vilhena, José Berredo, Weverton John Pinheiro dos Santos, Edilson Matos, and Michele Velasco
Springer Science and Business Media LLC
Jhonata Eduard Farias de Oliveira, Rayline Thaimenne Alves Figueredo, Maria do Perpétuo Socorro Progene Vilhena, José Francisco Berrêdo, José Ledamir Sindeaux-Neto, Edilson Matos, and Michele Velasco
Universidade Estadual de Maringa
In their natural habitat, fish are constantly threatened by icthyoparasites, notably those from the Phylum Cnidaria, Hatschek, 1888, represented by species of the Myxozoa, responsible for infections in fish that cause complications to their health that can lead to death. Among these parasites, the genus Myxobolus Butschli, 1882 is responsible for the largest number of infections described in fishes from the Americas. This study describes the morphological and histopathological aspects of parasitism by Myxobolus sp. in specimens of Metynnis hypsauchen, obtained from the Capim river, in the municipality of Ipixuna do Pará, Pará, Brazil. During the months of August and March, 2018, 20 animals were captured, euthanized and autopsied. With the aid of a stereomicroscope an external and internal investigation was performed on the animals for the purpose of finding lesions or parasitic cysts, followed by confirmation of infection in Light Microscopy (ML). Cysts and Fragments from parasitized tissues were processed using techniques for histology and Scanning Electron Microscopy (SEM). For histology they were stained with Hematoxylin-Eosin (H-E) and Ziehl-Neelsen and for SEM Micrographs were captured, using equipment from the Museu Paraense Emílio Goeldi. The prevalence of parasitism was 60% (12/20) of the specimens, and the cysts were in the epithelium and lumen of the renal tubules, causing histopathological changes. The characteristics of the parasite spores are those associated with the genus Myxobolus, with an ellipsoid format, two polar capsules and a sporoplasm region. It was possible to confirm a high parasite load of Myxobolus, with compromised renal functions. This study is the first to describe Myxospore in Metynnis hypsauchen.
Maria P.S.P. Vilhena, Marcondes L. Costa, José F. Berredo, Rosildo S. Paiva, and Marcelo Z. Moreira
Elsevier BV
Maria P.S.P. Vilhena, Marcondes L. Costa, José F. Berrêdo, Rosildo S. Paiva, and Crisvaldo C.S. Souza
Elsevier BV
Maria do Perpetuo Socorro Progene Vilhena, Marcondes Lima da Costa, José Francisco Berrêdo, Rosildo Santos Paiva, and Pryscila Denise Almeida
FapUNIFESP (SciELO)
Phytoplankton is important bioindicator of chemical and biological modifications of natural ecosystems. The objective of this study was to determine the total chemical composition of the phytoplankton of the Pará and Mocajuba estuaries on the eastern coast of the Amazon region in the Brazilian state of Pará. The chemical composition of the surface water, bottom sediments (total sample and bioavailable fraction), and the phytoplankton were determined by inductively coupled plasma optical emission spectrometry. Phytoplankton contained high concentrations of Ca, P, Mn, Fe, Zn, Al, Ba, and Pb. The phytoplankton of the Mocajuba estuary is rich in Fe (2,967-84,750 µg g-1), while those from the Pará is rich in Al (1,216-15,389 µgg-1), probably reflecting divergent anthropogenic inputs. Both samples indicated a high bioconcentration factor derived from both the water and the bioavailable fraction, reflecting the efficiency of these organisms in the concentration of metals.
Maria Do Perpetuo Socorro Progene Vilhena, Marcondes Lima Da Costa, and José Francisco Berrêdo
Elsevier BV