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
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
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
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.
Maria P.S.P. Vilhena, Marcondes L. Costa, José F. Berrêdo, Rosildo S. Paiva, and Marcelo Z. Moreira
Elsevier BV
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