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Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology

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https://www.readbyqxmd.com/read/30208125/toxoplasma-gondii-infection-among-shelter-and-stray-cats-in-rio-de-janeiro-brazil
#1
Pâmela Figueiredo Pereira, Alynne da Silva Barbosa, Ana Leticia Carvalho Santos, Paula Forain Bolais, Marie-Laure Dardé, Maria Regina Reis Amendoeira
The aim of this study was to identify possible infection of Toxoplasma gondii among cats in a shelter and a set of condominiums in the city of Rio de Janeiro, through changes to the cats' serological status between two different times in 2014 and 2015. One group was made up of captive cats at the municipal shelter and the other comprised stray cats that circulated in condominiums in the city. On the first occasion, cats were caught and tagged through application of microchips; in this manner, blood samples were obtained from 261 captive cats and 172 stray cats...
September 6, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30208124/gastrointestinal-and-ectoparasites-of-plumbeous-rail-pardirallus-sanguinolentus-aves-rallidae-in-central-chile
#2
José Osvaldo Valdebenito, Lucila Moreno, Carlos Barrientos, Sergey Mironov, John Mike Kinsella, Armando Cicchino, Mabel Mena, Alexandra Grandón-Ojeda, Daniel González-Acuña
With the aim to identify the parasite fauna of plumbeous rail, Pardirallus sanguinolentus (Aves: Rallidae) in Chile, 26 carcasses were parasitologically necropsied. The present study revealed the presence of 14 species of parasites (inverse Simpson index = 4.64; evenness = 0.332), including ectoparasites: feather mites: Analloptes megnini , Grallobia sp., Grallolichus sp., Megniniella sp., and Metanalges sp.; the feather lice Pseudomenopon meinertzhageni, Rallicola andinus, and Fulicoffula sp.; and six species of gastrointestinal helminths: Heterakis psophiae, Porrocaecum ardeae, Tetrameres sp...
September 6, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30184004/isolation-and-genetic-characterization-of-toxoplasma-gondii-from-free-ranging-and-captive-birds-and-mammals-in-pernambuco-state-brazil
#3
Marcio André Silva, Hilda Fátima Jesus Pena, Herbert Sousa Soares, Juliana Aizawa, Solange Oliveira, Bruna Farias Alves, Dênisson Silva Souza, Renata Pimentel Bandeira Melo, Solange Maria Gennari, Rinaldo Aparecido Mota, Jean Carlos Ramos Silva
Recent genetic population studies on Toxoplasma gondii in Brazil have shown large genetic variability. The objective of the present study was to isolate and genotypically characterize T. gondii from free-ranging and captive wild mammals and birds in Pernambuco state, Brazil. Fragments of heart, brain, skeletal muscle and diaphragm tissue from 71 birds and 34 mammals, which were either free-ranging or captive, were collected. Samples from 32 of these animals were subjected to bioassays in mice. Samples from the remaining 73 animals underwent biomolecular diagnosis, using PCR technique, targeting a repetitive DNA fragment of 529 bp in T...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30184003/seroprevalence-spatial-analysis-and-risk-factors-of-infection-with-neospora-caninum-in-cattle-in-brazil-s-northern-pantanal-wetland
#4
Ana Carolina Schmidt, Thábata Dos Anjos Pacheco, Janice Elena Ioris Barddal, Anderson Castro Soares de Oliveira, Daniel Moura de Aguiar, Rísia Lopes Negreiros, Richard de Campos Pacheco
Neosporosis is caused by an obligate intracellular protozoan, Neospora caninum . It is considered one of the most widespread and frequent causes of abortion in cattle worldwide. To evaluate the prevalence of anti-N. caninum antibodies and associated risk factors, serum samples were collected from 2,452 bovines at 262 farms in the northern Pantanal, state of Mato Grosso, Brazil. Each farmer was asked to fill out a questionnaire for subsequent epidemiological data analysis. Anti-N. caninum antibodies were detected by means of the indirect immunofluorescent assay (IFA), using a cut-off dilution of 1:100...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30184002/blankaartia-sinnamaryi-trombidiformes-trombiculidae-parasitizing-birds-in-southeastern-brazil-with-notes-on-rickettsia-detection
#5
Ricardo Bassini-Silva, Fernando de Castro Jacinavicius, Ralph Maturano, Sebastián Muñoz-Leal, Ronald Ochoa, Gary Bauchan, Marcelo Bahia Labruna, Darci Moraes Barros-Battesti
The larvae of the family Trombiculidae are ectoparasites of vertebrates, including birds. The bite of some species can cause deep lesions and severe skin reactions in the host, these can lead to dermatitis, popularly known as trombiculiasis. A morphological study of chiggers collected on birds from the state of Minas Gerais in Southeastern Brazil discovered Blankaartia sinnamaryi-infestation on Passeriformes birds. Molecular studies of the disclosed the 18S rDNA sequences of the mite, and the detection of a Rickettsia sp...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30184001/variables-associated-with-the-prevalence-of-anti-leishmania-spp-antibodies-in-dogs-on-the-tri-border-of-foz-do-igua%C3%A3-u-paran%C3%A3-brazil
#6
Renata Cristina Ferreira Dias, Vanete Thomaz-Soccol, Aline Kuhn Sbruzzi Pasquali, Silvana Maria Alban, Ricardo Cancio Fendrich, Eliane Maria Pozzolo, Luciana Chiyo, Alceu Bisetto Júnior, Fernanda Pinto Ferreira, Stela Silva Desto, Roberta Lemos Freire, Regina Mitsuka-Breganó, Italmar Teodorico Navarro
The aim of this study was to investigate the occurrence of anti-Leishmania spp. antibodies in dogs from localities in the city of Foz do Iguaçu, Paraná state, Brazil, on the border with Argentina and Paraguay. Blood samples dogs were collected to perform the following serologic tests: immunochromatographic DPP® rapid test, indirect immunoenzymatic assay (ELISA) and indirect immunofluorescence assay (IFA). In 2012, 285 dogs were analyzed on Argentina border, and in 2013, serum samples from 396 dogs on the border of Paraguay were collected...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30184000/the-dermatitis-by-caparinia-tripilis-and-microsporum-in-african-pygmy-hedgehog-atelerix-albiventris-in-romania-first-report
#7
Olimpia Iacob, Adriana Iftinca
Investigations were conducted on a case of generalized dermatitis in an African pygmy hedgehog (Atelerix albiventris), purchased as a pet. Clinical examination revealed restlessness, agitation, itching and scratching, large alopecic areas, skin congestion and thin whitish scabs. Five skin lesions were scraped and the samples were collected for laboratory tests. Microscopy revealed the presence of the mite Caparinia tripilis (Acari: Psoroptidae). A dermatophyte belonging to Microsporum genus was also isolated by culture on specific media...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30183999/serological-molecular-and-microscopic-detection-of-leishmania-in-cats-felis-catus-in-belo-horizonte-minas-gerais-state-brazil
#8
Fernanda Morcatti Coura, Stephanie Karoline Pereira Passos, Marina de Oliveira França Pelegrino, Fabiola de Oliveira Paes Leme, Gustavo Fontes Paz, Célia Maria Ferreira Gontijo, Adriane Pimenta da Costa-Val
The role of cats in the epidemiological cycle of leishmaniasis remains unclear. To better understand the occurrence of leishmaniasis in cats, we studied the frequency of Leishmania in serum samples of 100 cats living in an endemic region for canine and human leishmaniasis by serological, parasitological, and molecular methods. Of the 100 cats, 54 were seropositive for Leishmania antibodies by immunofluorescence antibody test. None of the bone marrow aspirates collected from these cats tested positive for the parasite in culture or upon polymerase chain reaction (PCR) analysis...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30183998/the-effect-of-water-source-and-soil-supplementation-on-parasite-contamination-in-organic-vegetable-gardens
#9
Fernanda Pinto Ferreira, Eloiza Teles Caldart, Roberta Lemos Freire, Regina Mitsuka-Breganó, Felipe Machado de Freitas, Ana Carolina Miura, Marcelle Mareze, Felippe Danyel Cardoso Martins, Mariana Ragassi Urbano, Adilson Luiz Seifert, Italmar Teodorico Navarro
The objective of this study was to determine factors associated with vegetable contamination with zoonotic protozoan. Samples of water, soil and vegetables were collected from July/2014 to May/2016, totaling 83 samples, 21 properties of Londrina region, Paraná, Brazil. DNA amplification of Toxoplasma gondii, Cryptosporidium spp. and Giardia intestinalis in the samples was conducted using polymerase chain reaction (PCR). The PCR results were positive for T. gondii in 12.9% (8/62), Cryptosporidium spp. in 11...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30183997/molecular-survey-and-genetic-diversity-of-piroplasmids-in-equids-from-midwestern-brazil
#10
Fabio Bernardo Schein, Maerle Oliveira Maia, Rute Witter, Arlei Marcili, Lázaro Manoel de Camargo, Valéria Dutra, Luciano Nakazato, Stefhano Luís Candido, Elianara Martins de Almeida, Anderson Castro Soares de Oliveira, Richard de Campos Pacheco
We evaluated the distribution of piroplasmids in equids from the Mato Grosso state in Midwestern Brazil using molecular methods and the interspecific genetic diversity. For this, 1,624 blood samples of equids from 973 farms were examined by PCR, using primer pairs that amplify a fragment of the genes rap-1 and ema-1 of Babesia caballi and Theileria equi, respectively. For molecular characterization and phylogenetic studies, 13 and 60 sequences of the rap-1 and ema-1 genes, respectively, were used to build a dendogram using maximum parsimony...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30183996/association-of-epistylis-spp-ciliophora-peritrichia-with-parasitic-crustaceans-in-farmed-piava-megaleporinus-obtusidens-characiformes-anostomidae
#11
Gabriela Pala, Thaís Heloísa Vaz Farias, Lindomar de Oliveira Alves, Fabiana Pilarski, Estevam Guilherme Lux Hoppe
Parasitic diseases have caused significant problems to global aquaculture production. These studies will further our knowledge of this complex problem and help implement adequate prevention measures and control strategies. The present study aimed to investigate the presence of parasites in Megaleporinus obtusidens and to describe the epidemiology and pathology of parasitic infections in these fish. Five moribund fish were sent for parasitological examination. The integument and gills were scrapped off with a glass slide, and samples were examined under a light microscope...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30183995/occurrence-of-anti-neospora-caninum-antibodies-in-cattle-in-the-dairy-farming-region-of-the-state-of-piau%C3%A3-brazil
#12
Raylson Pereira de Oliveira, Nínivy Marques Soares, José Givanildo da Silva, Müller Ribeiro-Andrade, Nair Silva Cavalcanti de Lira, Márcia Paula Oliveira Farias, Rinaldo Aparecido Mota
This study focused on the detection of anti-Neospora caninum IgG antibodies in cows in the dairy farming region of the state of Piauí, Brazil. To this end, serum samples were collected from 255 dairy cows on 17 farms located in the dairy farming region of the municipality of Parnaíba, Piauí, Brazil. The indirect fluorescence antibody test (IFAT) was employed to detect anti-N. caninum IgG antibodies, using anti-bovine IgG (Sigma®) conjugated to fluorescein isothiocyanate (FITC) and a cutoff point of 1:200...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30183994/light-microscopy-and-surface-topography-of-urotrema-scabridum-and-renschetrema-indicum-digenea-from-rhinopoma-hardwickii-chiroptera-first-report-in-egypt
#13
Kareem Morsy, Fathy Abdel-Ghaffar, Abdel-Rahman Bashtar, Saad Bin Dajem, Rewaida Abdel-Gaber, Marwa Mostafa
This report introduced the description of two different species of digenean parasites isolated from the intestine of Rhinopoma hardwickii with new host and locality records in Egypt. The recovered helminthes were studied morphologically and morphometrically by light microscopy and the surface topography of the two species was elucidated by scanning electron microscopy (SEM). Urotrema scabridum had an elongated body, testes were tandem, ovaries were pretesticular, and vitelline follicles were observed in 2 lateral fields...
August 30, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133596/analysis-of-bm86-conserved-epitopes-is-a-global-vaccine-against-cattle-tick-rhipicephalus-microplus-possible
#14
Isabella Maiumi Zaidan Blecha, Bárbara Guimarães Csordas, André de Abreu Rangel Aguirre, Rodrigo Casquero Cunha, Marcos Valério Garcia, Renato Andreotti
The cattle tick Rhipicephalus microplus causes significant economic losses in agribusiness. Control of this tick is achieved mainly through the application of chemical acaricides, often resulting in contamination of animal food products and of the environment. Another major concern associated with acaricide use is the increasing reports of resistance of this tick vector against the active ingredients of many commercial products. An alternative control method is vaccination. However, the commercially available vaccine based on a protein homologous to Bm86 exhibits variations in efficacy relative to the different geographical locations...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133595/persistence-and-efficacy-of-a-new-formulation-based-on-dog-allomonal-repellents-against-rhipicephalus-sanguineus-sensu-lato-tick
#15
Jaires Gomes de Oliveira Filho, Lorena Lopes Ferreira, Fernanda de Oliveira Silva, Karolina Martins Ferreira Menezes, Elen Regozino Muniz, Luiza Gabriella Ferreira de Paula, André Lucio Franceschini Sarria, John Anthony Pickett, Michael Alexander Birkett, Gabriel Moura Mascarin, Lígia Miranda Ferreira Borges
Beagles are less susceptible to Rhipicephalus sanguineus sensu lato tick due to the production of the allomones benzaldehyde and 2-hexanone. Our previous published work showed that these compounds can reduce tick burden on susceptible dogs. Here we tested the hypothesis that an increase in repellent dose and release rate could increase repellent efficacy and persistence. Slow-release formulations of these compounds, with higher doses and release rates, were tested on artificially-infested dogs. Ten dogs were randomly assigned to two groups with five dogs each...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133594/the-dynamics-of-energy-metabolism-in-the-tick-embryo
#16
Renato Martins, Newton Ruiz, Rodrigo Nunes da Fonseca, Itabajara da Silva Vaz Junior, Carlos Logullo
The cattle tick Rhipicephalus (Boophilus) microplus is an ectoparasite capable of transmitting a large number of pathogens, causing considerable losses in the cattle industry, with substantial damage to livestock. Over the years, important stages of its life cycle, such as the embryo, have been largely ignored by researchers. Tick embryogenesis has been typically described as an energy-consuming process, sustaining cell proliferation, differentiation, and growth. During the embryonic stage of arthropods, there is mobilization of metabolites of maternal origin for the development of organs and tissues of the embryo...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133593/genetic-diversity-and-molecular-survey-of-trypanosoma-megatrypanum-theileri-in-cattle-in-brazil-s-western-amazon-region
#17
Thábata Dos Anjos Pacheco, Arlei Marcili, Andrea Pereira da Costa, Rute Witter, Andréia Lima Tomé Melo, Ricardo Vilas Boas, Cristiane Silva Chitarra, Valéria Dutra, Luciano Nakazato, Richard de Campos Pacheco
Trypanosoma (Megatrypanum) theileri is a flagellated protozoan that infects ruminants and it displays high genetic diversity. In this study, we investigated the prevalence rates of this protozoan based on hemoculture and molecular diagnosis. The isolates of T. theileri thus obtained were characterized by molecular markers SSU rDNA and gGAPDH and molecular diagnosis based on Cathepsin L-like gene (PCR-TthCATL). The PCR-TthCATL and hemoculture indicated an overall prevalence rate of 8.13%, and the CATL derived sequence named IB was identified for the first time in cattle in the western Amazon region, as well as IF in Brazil...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133592/immune-humoral-response-of-young-lambs-naturally-infested-by-oestrus-ovis-diptera-oestridae
#18
Bruna Fernanda da Silva, César Cristiano Bassetto, Alessandro Francisco Talamini do Amarante
Twenty-six newborn lambs were evaluated for 21 weeks, from birth to slaughter, to assess their plasma anti-Oestrus ovis immunoglobulin (IgG) using the ELISA technique. On the last day of sampling, all the lambs were slaughtered and O. ovis larvae were recovered, quantified and identified according to the larval stage. High levels of IgG were observed over the first three weeks of life, thus indicating that antibodies are transferred via colostrum from ewes to lambs. Afterwards, the antibody levels declined progressively until the lambs were 11 weeks of age and subsequently started to increase again when they were around 13 weeks of age, reaching the apex on the last week of sampling...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133591/helminth-infections-and-hybridization-between-haemonchus-contortus-and-haemonchus-placei-in-sheep-from-santana-do-livramento-brazil
#19
Fabiana Alves de Almeida, César Cristiano Bassetto, Mônica Regina Vendrame Amarante, Ana Cláudia Alexandre de Albuquerque, Renan Zappavigna Costa Starling, Alessandro Francisco Talamini do Amarante
The occurrence and intensity of helminth infections were evaluated in sheep from pastures shared with cattle. In 2015 and 2016, young male sheep acquired in Santana do Livramento, Rio Grande do Sul, Brazil, were finished in integrated crop-livestock system. We selected the 12 sheep that showed the highest number of nematode eggs per gram of faeces to search for worms in the gastrointestinal tract. Haemonchus contortus and Trichostrongylus colubriformis were the major parasites. H. contortus presented mean intensities of 1,159 and 257 worms in 2015 and 2016, respectively...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/30133590/parasitic-helminths-of-the-non-native-serrasalmid-fish-metynnis-lippincottianus-from-the-tr%C3%A3%C2%AAs-marias-reservoir-southeast-brazil
#20
Maria de Fátima Cancella de Almeida-Berto, Cassandra Moraes Monteiro, Marilia de Carvalho Brasil-Sato
Metynnis lippincottianus is a freshwater native fish to the Guiana basin and Amazon basin and was recently introduced into the São Francisco River in Brazil. This study aimed to determine the helminths parasites of M. lippincottianus from the Três Marias Reservoir, upper São Francisco River, State of Minas Gerais, Southeast Brazil. From 67 hosts examined, 63 were parasitized by 9,257 helminths represented by five species: Dadayius sp. [prevalence (P) = 1.49%, mean abundance (MA) = 0.01]; proteocephalid plerocercoids (P = 43...
August 16, 2018: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
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