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Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology

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https://www.readbyqxmd.com/read/29185602/the-first-study-of-molecular-prevalence-and-species-characterization-of-cryptosporidium-in-free-range-chicken-gallus-gallus-domesticus-from-brazil
#1
Maria Paula de Carvalho Ewald, Felippe Danyel Cardoso Martins, Eloiza Teles Caldart, Fernando Emmanuel Gonçalves Vieira, Milton Hissashi Yamamura, João Pedro Sasse, Luiz Daniel de Barros, Roberta Lemos Freire, Italmar Teodorico Navarro, João Luis Garcia
Rearing free-range chicken is based on grazing feeding patterns, and these animals could be potential environmental contaminants of Cryptosporidium oocysts for humans and other animals. Therefore, the present study aimed to evaluate the molecular prevalence of Cryptosporidium spp. in free-range chickens from Brazil. A total of 351 fecal samples from chickens were examined from 20 farms. For detection of Cryptosporidium spp., 18S rRNA gene fragments were amplified using a nested PCR reaction. Positive samples were sent for sequencing...
November 27, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29166427/myxobolus-marajoensis-sp-n-myxosporea-myxobolidae-parasite-of-the-freshwater-catfish-rhamdia-quelen-from-the-brazilian-amazon-region
#2
Jacqueline Abrunhosa, José Ledamir Sindeaux-Neto, Ândrea Kely Dos Santos, Igor Hamoy, Edilson Matos
This study provides morphological and molecular data of a new parasite species found in the muscle layer of the intestinal tract of the South American silver catfish, Rhamdia quelen from Marajó Island region (Pará State, Brazil), an important fishery resource with recognized potential for fish farming. The morphology of these parasites was reanalyzed and phylogenetic analyses were run on their 18S rDNA gene sequences. The spores were morphologically distinct from those of other Myxobolus species described previously...
November 17, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160359/gastrointestinal-parasites-in-feral-cats-and-rodents-from-the-fernando-de-noronha-archipelago-brazil
#3
Victor Fernando Santana Lima, Rafael Antonio Nascimento Ramos, Raphael Lepold, João Carlos Gomes Borges, Carlos Diógenes Ferreira, Laura Rinaldi, Giuseppe Cringoli, Leucio Câmara Alves
Gastrointestinal parasites are important pathogens affecting animals, some of them are of medical and veterinary concern. Although the dynamic of parasitic infections is a complex phenomenon that has been studied under experimental conditions, it shows several gaps in knowledge, especially in insular regions where a confined population of animals and parasites co-exists. In this study was assessed the parasitism by endoparasite gastrointestinal in feral cats (n = 37) and rodents (n = 30) from the Fernando de Noronha Archipelago; in addition, the risk of human infection and ecological implications of these findings were discussed...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160358/potential-of-entomopathogenic-nematodes-of-the-genus-heterorhabditis-for-the-control-of-stomoxys-calcitrans-diptera-muscidae
#4
Luís Carlos de Souza Rodrigues Leal, Caio Márcio de Oliveira Monteiro, Alessandra Ésther de Mendonça, Vânia Rita Elias Pinheiro Bittencourt, Avelino José Bittencourt
The present study verified the pathogenic potential of entomopathogenic nematodes (EPNs) of the genus Heterorhabditis (Heterorhabditis bacteriophora, isolate HP88 and Heterorhabditis baujardi isolate LPP7) to immature stages of Stomoxys calcitrans in the laboratory. All EPN concentrations of the H. bacteriophora HP88 strain caused mean larval mortality greater than 90% after four days. Higher concentrations of the H. baujardi LPP7 isolate (≥50 EPNs/larva) eliminated more than 70% of larvae after six days with the concentration 200 EPNs/larva reaching mortality levels of 93...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160357/co-infection-with-arthropod-borne-pathogens-in-domestic-cats
#5
Marcos Rogério André, Kilder Dantas Filgueira, Ana Cláudia Calchi, Keyla Carstens Marques de Sousa, Luiz Ricardo Gonçalves, Vitor Brasil Medeiros, Poliana Araújo Ximenes, Ivana Cristina Nunes Gadelha Lelis, Maria Vanuza Nunes de Meireles, Rosangela Zacarias Machado
The role of several feline vector-borne pathogens (FVBP) as a cause of disease in cats has not been clearly determined. In fact, with the exception of Bartonella spp. and hemoplasmas, FVBP in cats has not been clearly determined in Brazil yet. The present study aimed at identifying, by using molecular methods, the presence of FVBP in three cats showing non-specific clinical signs and inclusions suggestive of hemoparasites in blood smears. Cytauxzoon felis, 'Candidatus Mycoplasma haemominutum', Ehrlichia sp...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160356/seasonality-of-parasitic-helminths-of-leporinus-macrocephalus-and-their-parasitism-rates-in-farming-systems-in-the-amazon
#6
Williane Maria de Oliveira Martins, Márcia Cristina Nascimento Justo, Melissa Querido Cárdenas, Simone Chinicz Cohen
The objective of the present study was to analyze the seasonality of parasitic helminths of Leporinus macrocephalus from fish farms in the municipality of Cruzeiro do Sul, Acre, Brazil, and their parasitism rates. Between June 2014 and March 2015, 200 specimens were sampled from two fish farms: one with a semi-intensive system and the other with an extensive system (100 fish from each farm: 50 during the dry season and 50 during the rainy season). Fifteen species of parasites were found, with seasonal variations of some according to the farming system...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160355/growth-mortality-and-susceptibility-of-oyster-crassostrea-spp-to-perkinsus-spp-infection-during-on-growing-in-northeast-brazil
#7
Marcos Paiva Scardua, Rogério Tubino Vianna, Sâmia Sousa Duarte, Natanael Dantas Farias, Maria Luíza Dias Correia, Helen Taynara Araújo Dos Santos, Patricia Mirella da Silva
Crassostrea rhizophorae and C. gasar oysters are cultivated in the northeast region. Perkinsus parasites infect bivalves, and their effects on oysters from tropical regions are poorly understood. This study evaluated the impact of Perkinsus infection on the productive traits of native oysters. Oysters were sampled bimonthly during 7 months, from July 2010 to February 2011, to evaluate growth rate, mortality and shell color patterns (white and dark-gray) (n = 500), and to determine the prevalence and intensity of Perkinsus (n = 152)...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160354/dynamics-of-haemocytes-from-pseudosuccinea-columella-circulating-infected-by-fasciola-hepatica
#8
Vinicius Marques Antunes Ribeiro, Aytube Lucas Coaglio, Fernando Luiz Pereira Oliveira, Cíntia Aparecida de Jesus Pereira, Walter Dos Santos Lima
The lymnaeids are important in the epidemiology of Fasciola hepatica, a neglected and endemic zoonosis. The interaction between the internal defense system of Pseudosuccinea columella and F. hepatica has been little studied. In the present study the effect of infection by F. hepatica on P. columella circulating haemocytes was investigated. Changes in the average number of total circulating haemocytes have been observed at 30 minutes post-infection and 1, 7, 10, 14, 21, 28 and 50 days post-infection (dpi). Miracidia were observed head-foot and mantle at 30 minutes post-infection...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29160353/in-vitro-evaluation-of-ivermectin-moxidectin-albendazole-and-pyrantel-against-cyathostomins-of-horses
#9
Marcelo Beltrão Molento, Ricardo José Canever
Cyathostomins are the most prevalent nematodes of horses, and multidrug resistance has been reported worldwide. There is a need to implement alternative drug monitoring analytical tests. The objective of this study was to determine the consistency (5 repetitions) of the larval migration on agar test (LMAT) using ivermectin, moxidectin, pyrantel or albendazole against cyathostomin infective-stage larvae in eight different concentrations. LMAT showed a strong coefficient of determination (R2 > 0.91), between the test repetitions (n=5)...
November 9, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29091123/diversity-and-distribution-of-coccidia-of-wild-birds-in-an-atlantic-forest-fragment-area-in-southeastern-brazil
#10
Patrícia Silva de Oliveira, Matheus Alexandre Ferreira, Lidiane Maria da Silva, Mariana Borges Rodrigues, Sergian Vianna Cardozo, Bruno Pereira Berto
Coccidia are protozoan parasites that are frequently observed in fecal samples from wild birds, and they are extremely important for biodiversity, host specificity and conservation. The aim of the present study was to identify and quantify the coccidian species from wild birds caught in a fragmented area of Atlantic Forest in the municipality of Guapimirim in the state of Rio de Janeiro, which is located around the Serra dos Órgãos National Park. A total of 101 birds were caught and identified. The highest prevalence and density were observed in the family Columbidae (Columbiformes)...
October 30, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29091122/efficacy-of-commercial-synthetic-pyrethroids-and-organophosphates-associations-used-to-control-rhipicephalus-boophilus-microplus-in-southern-brazil
#11
Caroline Zamperete Reginato, Gustavo Cauduro Cadore, Fernanda Rezer de Menezes, Luis Antonio Sangioni, Fernanda Silveira Flores Vogel
This study evaluated the acaricidal efficiency of synthetic pyrethroids (SP) associated with organophosphates (OP) against Rhipicephalus (Boophilus) microplus populations in the state of Rio Grande do Sul, Southern Brazil. Ticks were collected in 54 cattle farms and tested using in vitro adult immersion test against four commercially available acaricide mixtures of SP and OP. Only one of four acaricides, comprising a mixture of cypermethrin, chlorpyrifos, and fenthion, had a mean efficiency higher than 95%, and was effective in 94...
October 30, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29091121/choledocystus-elegans-digenea-plagiorchiidae-of-leptodactylus-paraensis-amphibia-leptodactylidae-from-the-brazilian-amazon
#12
Tássia Fernanda Furo Gomes, Francisco Tiago de Vasconcelos Melo, Elane Guerreiro Giese, Adriano Penha Furtado, Jeannie Nascimento Dos Santos
The trematodes are parasites of the several vertebrates including amphibians, however the knowledge about of the taxonomy these parasites is still confuse. The trematode Choledocystus elegans was found in the small intestine of the Leptodactylus paraensis in eastern Amazon and presents the following characteristics: several pointed tegumentary spines, papillae on the outer and inner edges of the oral and ventral suckers, a round, well-developed cirrus sac, a well-developed cirrus, oblique testicles, a ovary right side, uterine loops extending between the testicles, follicular vitellaria distributed throughout the body, starting at the genital pore region and caeca close the end of the body...
October 30, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29091120/detection-and-molecular-characterization-of-trypanosoma-duttonella-vivax-in-dairy-cattle-in-the-state-of-sergipe-northeastern-brazil
#13
Osires Lustosa Eloi Vieira, Lucia Oliveira de Macedo, Marcos Antônio Bezerra Santos, José Augusto Bastos Afonso Silva, Carla Lopes de Mendonça, Maria Aparecida da Gloria Faustino, Carlos Alberto do Nascimento Ramos, Leucio Câmara Alves, Rafael Antonio Nascimento Ramos, Gílcia Aparecida de Carvalho
Trypanosoma (Duttonella) vivax is an important cause of economic losses among feedlot cattle. These losses are related to the morbidity, mortality, reproductive issues and decreased production. It is known that the clinical signs observed in infections by this protozoon are similar to other hemoparasitosis, which difficult the diagnosis. Therefore, the aim of this study was to detect and molecularly characterize an outbreak of trypanosomiasis caused by T. (D.) vivax in dairy cattle in the municipality of São Miguel Aleixo, state of Sergipe, Brazil...
October 30, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29069160/litomosoides-silvai-nematoda-onchocercidae-parasitizing-akodon-montensis-rodentia-cricetidae-in-the-southern-region-of-brazil
#14
Lucas Trevisan Gressler, Felipe da Silva Krawczak, Marcelo Knoff, Silvia Gonzalez Monteiro, Marcelo Bahia Labruna, Lina de Campos Binder, Caroline Sobotyk de Oliveira, Juliana Notarnicola
In the present study, Litomosoides silvai parasitizing Akodon montensis in the southern region of Brazil is reported for the first time. New morphological information is provided for some structures of this nematode species, such as a flattened cephalic extremity, presence of two dorsal cephalic papillae, female tail with a constriction at its tip, "s" shaped vagina, spicules characteristic of the carinii species group and microfilaria tail constricted at the tip. This nematode was found parasitizing the thoracic cavity with a prevalence of 10% (2/20), mean intensity of 4 (6/2), mean abundance of 0...
October 23, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29069159/digenea-parasites-of-acestrorhynchus-falcirostris-osteichthyes-acestrorhynchidae-in-the-state-of-amazonas-brazil
#15
Berenice Maria Musco Fernandes, Marcia Cristina Nascimento Justo, Camila Saraiva Dos Anjos, José Celso de Oliveira Malta, José Chissiua Dumbo
This study presents the helminthofauna of digenean parasites of Acestrorhynchus falcirostris in the state of Amazonas (Brazil). Eight species belonging to four families were recovered: Metacercariae of Austrodiplostomum compactum (Diplostomidae) and Clinostomum marginatum (Clinostomidae) and mature specimens of Bellumcorpus majus, Prosorhynchoides carvajali, Rhipidocotyle santanaensis (Bucephalidae); Prosthenhystera obesa (Callodistomidae); Genarchella genarchella (Derogenidae) and Phyllodistomum spatula (Gorgoderidae)...
October 23, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29069158/multiple-anthelmintic-resistance-in-southern-brazil-sheep-flocks
#16
Plínio Aguiar de Oliveira, Beatriz Riet-Correa, Pablo Estima-Silva, Ana Carolina Barreto Coelho, Bianca Lemos Dos Santos, Marco André Paldês Costa, Jerônimo Lopes Ruas, Ana Lucia Schild
Gastrointestinal parasites represent an important cause of reduced productivity of sheep worldwide. As anthelmintic are still the main control tool for these parasites, this work evaluated the efficacy of commercially available active principles in 22 sheep flocks in the southern region of Rio Grande do Sul, Brazil. In each farm 10 sheep were randomly distributed in seven groups with the following treatments: abamectin; albendazole; closantel; levamisole; monepantel; trichlorphon and no anthelmintic (control)...
October 23, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29069157/in-vitro-efficacy-of-duddingtonia-flagrans-against-nematodes-of-sheep-based-on-in-vivo-calculations
#17
Marcelo Beltrão Molento, Flávia Biasoli de Araújo, Andréia Buzatti, Clóvis de Paula Santos
Duddingtonia flagrans has been tested as an alternative parasite control, but data from in vitro experiments based on in vivo calculations describing nematophagous fungi predation in nematodes are restricted. The objective of this work was to determine the efficacy of D. flagrans against sheep nematode larvae in vitro using in vivo calculations. Fecal samples were introduced to fungi in different concentrations: 0.0/control; 0.05; 0.1; 0.2; 0.4; 0.8; 1.6; 3.2; and 6.4 g corresponding, respectively, to 583.000; 1...
October 23, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29211135/longitudinal-evaluation-of-humoral-immune-response-and-merozoite-surface-antigen-diversity-in-calves-naturally-infected-with-babesia-bovis-in-s%C3%A3-o-paulo-brazil
#18
Carlos António Matos, Luiz Ricardo Gonçalves, Dasiel Obregón Alvarez, Carla Roberta Freschi, Jenevaldo Barbosa da Silva, Silvana Pompeia Val-Moraes, Natalia Serra Mendes, Marcos Rogério André, Rosangela Zacarias Machado
Babesiosis is an economically important infectious disease affecting cattle worldwide. In order to longitudinally evaluate the humoral immune response against Babesia bovis and the merozoite surface antigen diversity of B. bovis among naturally infected calves in Taiaçu, Brazil, serum and DNA samples from 15 calves were obtained quarterly, from their birth to 12 months of age. Anti-B. bovis IgG antibodies were detected by means of the indirect fluorescent antibody test (IFAT) and enzyme-linked immunosorbent assay (ELISA)...
October 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/29211134/gastrointestinal-helminths-of-two-populations-of-wild-pigeons-columba-livia-in-brazil
#19
Frederico Fontanelli Vaz, Lidiane Aparecida Firmino da Silva, Vivian Lindmayer Ferreira, Reinaldo José da Silva, Tânia Freitas Raso
The present study analyzed gastrointestinal helminth communities in 265 wild pigeons (Columba livia) living in the municipalities of São Paulo and Tatuí, state of São Paulo, Brazil, over a one-year period. The birds were caught next to grain storage warehouses and were necropsied. A total of 790 parasites comprising one nematode species and one cestode genus were recovered from 110 pigeons, thus yielding an overall prevalence of 41.5%, mean intensity of infection of 7.2 ± 1.6 (range 1-144) and discrepancy index of 0...
October 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28700000/ticks-infesting-captive-and-free-roaming-wild-animal-species-at-the-s%C3%A3-o-paulo-zoo-s%C3%A3-o-paulo-brazil
#20
Irys Hany Lima Gonzalez, Marcelo Bahia Labruna, Carolina Romeiro Fernandes Chagas, Paula Andrea Borges Salgado, Cauê Monticelli, Luan Henrique Morais, Amanda Alves de Moraes, Thatiane Cristina Antunes, Patrícia Locosque Ramos, Thiago Fernandes Martins
Ticks are ectoparasites of worldwide distribution that affect vertebrates and can transmit pathogens to animals and humans. The Zoological Park Foundation of São Paulo (FPZSP) is located in a Conservation Unit in one of the most important remaining fragments of the Atlantic Rainforest biome in the suburbs of São Paulo, Brazil. The FPZSP houses more than 3,000 wild animals on exhibit, in breeding programs and in environmental education programs, and also attracts migratory birds and free-roaming wildlife. This study focused on identifying the diversity of tick species that infest captive and free-roaming animals at the FPZSP...
October 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
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