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Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology

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https://www.readbyqxmd.com/read/29091123/diversity-and-distribution-of-coccidia-of-wild-birds-in-an-atlantic-forest-fragment-area-in-southeastern-brazil
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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/28902261/detection-of-anaplasma-sp-phylogenetically-related-to-a-phagocytophilum-in-a-free-living-bird-in-brazil
#9
Anna Claudia Baumel Mongruel, Jyan Lucas Benevenute, Priscila Ikeda, Marcos Rogério André, Rosangela Zacarias Machado, Adriano de Oliveira Torres Carrasco, Meire Christina Seki
Wild animals play an important role in carrying vectors that may potentially transmit pathogens. Several reports highlighted the participation of wild animals on the Anaplasma phagocytophilum cycle, including as hosts of the agent. The aim of this study was to report the molecular detection of an agent phylogenetically related to A. phagocytophilum isolated from a wild bird in the Midwest of the state of Paraná, Brazil. Fifteen blood samples were collected from eleven different bird species in the Guarapuava region...
August 24, 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
#10
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...
July 10, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977250/parasites-of-the-southern-silvery-grebe-podiceps-occipitalis-aves-podicipedidae-in-chile
#11
Daniel González-Acuña, Sebastián Llanos-Soto, Carlos Landaeta-Aqueveque, Felipe González, John Mike Kinsella, Sergey Mironov, Armando Cicchino, Carlos Barrientos, Gonzalo Torres-Fuentes, Lucila Moreno
A total of 97 southern silvery grebes (Podiceps occipitalis), which died as the result of an oil spill on the coast of central Chile, were examined for ecto- and endoparasites. Two lice species including Aquanirmus rollandii (Philopteridae) and Pseudomenopon dolium (Menoponidae) were found from 6.2% (6/97) of birds. In 91.7% (89/97) of cases, grebes were infected with some kind of helminths. Three species of gastrointestinal helminths were detected: Eucoleus contortus (Nematoda), Profilicollis bullocki (Acanthocephala), and Confluaria sp...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977249/avispora-mochogalegoi-n-sp-apicomplexa-sarcocystidae-in-the-little-owl-athene-noctua-strigiformes-strigidae-in-mainland-portugal
#12
Sergian Vianna Cardozo, Bruno Pereira Berto, Inês Caetano, Viviane Camara Maniero, Marcos Santos, Isabel Pereira da Fonseca, Carlos Wilson Gomes Lopes
The little owl Athene noctua (Scopoli, 1769) is a small raptor that is widely distributed from northern to southern Portugal and several other countries in Europe, Asia and North Africa, and which has been introduced into New Zealand. In the current study, 18 fecal samples were collected from little owls kept at the Lisbon Center for Wild Animal Recovery, which is located in Monsanto Forest Park, Lisbon, Portugal. Twelve (67%) of them were found to be passing an undescribed species of Avispora in their feces...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977248/gnathostomatidae-nematode-parasite-of-colomesus-psittacus-osteichthyes-tetraodontiformes-in-the-ilha-de-maraj%C3%A3-brazilian-amazon
#13
Raul Henrique da Silva Pinheiro, Ricardo Luís Sousa Santana, Francisco Tiago Vasconcelos Melo, Jeannie Nascimento Dos Santos, Elane Guerreiro Giese
The genus Gnathostoma comprises 17 species, whose adult specimens are found in the stomach serosa of animals that consume raw fish; some species of the genus are zoonotic agents. The present study describes the presence of a nematode (Gnathostomatidae) parasitizing the digestive tract of Colomesus psittacus in the Ilha de Marajó in the eastern Brazilian Amazon. Thirty specimens of C. psittacus were collected in the municipality of Soure, Ilha de Marajó, state of Pará, Brazil, transported to the laboratory, necropsied and the helminths were collected and fixed...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977247/genetic-diversity-of-piroplasmids-species-in-equids-from-island-of-s%C3%A3-o-lu%C3%A3-s-northeastern-brazil
#14
Maria do Socorro Costa de Oliveira Braga, Francisca Neide Costa, Débora Regina Maia Gomes, Daniele Rosa Xavier, Marcos Rogério André, Luiz Ricardo Gonçalves, Carla Roberta Freschi, Rosangela Zacarias Machado
Equine piroplasmosisis, a tick-borne disease caused by the intra-erythrocytic protozoans Babesia caballi and Theileria equi, has economic importance due to the international trade and the increased movement of horses all over the world. The goal of this study was to evaluate the occurrence of phylogenetic diversity of T. equi and B. caballi genotypes among infected equids from São Luís Island, state of Maranhão, northeastern Brazil. Between December of 2011 and June of 2012, EDTA-blood and serum samples were collected from 139 equids (90 donkeys, 39 horses and 10 mules)...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977246/anthelmintic-effect-of-thymol-and-thymol-acetate-on-sheep-gastrointestinal-nematodes-and-their-toxicity-in-mice
#15
Weibson Paz Pinheiro André, Géssica Soares Cavalcante, Wesley Lyeverton Correia Ribeiro, Jessica Maria Leite Dos Santos, Iara Tersia Freitas Macedo, Haroldo César Beserra de Paula, Selene Maia de Morais, Janaina Viana de Melo, Claudia Maria Leal Bevilaqua
Thymol is a monoterpene and acetylation form of this compound can reduce the toxicity and enhance its biological effects. The objective of this study was to evaluate the effect of thymol and thymol acetate (TA) on egg, larva and adult Haemonchus contortus and the cuticular changes, acute toxicity in mice and the efficacy on sheep gastrointestinal nematodes. In vitro tests results were analyzed by analysis of variance (ANOVA) and followed by comparison with Tukey test or Bonferroni. The efficacy of in vivo test was calculated by the BootStreet program...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977245/external-and-gastrointestinal-parasites-of-the-rufous-collared-sparrow-zonotrichia-capensis-passeriformes-emberizidae-in-chile
#16
Sebastián Llanos-Soto, Braulio Muñoz, Lucila Moreno, Carlos Landaeta-Aqueveque, John Mike Kinsella, Sergey Mironov, Armando Cicchino, Carlos Barrientos, Gonzalo Torres-Fuentes, Daniel González-Acuña
A total of 277 rufous-collared sparrows, Zonotrichia capensis Müller, 1776 (Emberizidae), were examined for external parasites. The birds were captured using mist nets in seven locations in northern and central Chile. Additionally, seven carcasses from central Chile (the Biobío region) were necropsied to evaluate the presence of endoparasite infection. Ectoparasites were found on 35.8% (99/277) of the examined birds and they were represented by the following arthropods: feather mites Amerodectes zonotrichiae Mironov and González-Acuña, 2014 (Analgoidea: Proctophyllodidae), Proctophyllodes polyxenus Atyeo and Braasch, 1966 (Analgoidea: Proctophyllodidae), and Trouessartia capensis Berla, 1959 (Analgoidea: Trouessartiidae); a louse Philopterus sp...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977244/evaluation-of-phytotherapy-alternatives-for-controlling-rhipicephalus-boophilus-microplus-in-vitro
#17
José Pablo Villarreal Villarreal, Pedro Rassier Dos Santos, Maria Antonieta Machado Pereira da Silva, Rosaria Helena Machado Azambuja, Carolina Lambrecht Gonçalves, Jesus Jaime Hernández Escareño, Tânia Regina Bettin Dos Santos, Claudio Martin Pereira de Pereira, Rogério Antonio Freitag, Patrícia da Silva Nascente
The objective of this study was to identify the main chemical components of the essential oil of Cuminum cyminum L. (cumin) and of the fixed oils of Bertholletia excelsa (Brazil nut) and of Helianthus annuus (sunflower seed). As well as testing the three oils and three different commercial synthetic acaricides against engorged females of Rhipicephalus (Boophilus) microplus in order to explore their acaricidal efficacy. Six different concentrations of the oils (200, 100, 50, 25, 12.5 and 6.25 mg/mL) and the active principles were evaluated with the Adult Immersion Test (AIT)...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28977243/occurrence-of-abortions-induced-by-neospora-caninum-in-dairy-cattle-from-santa-catarina-southern-brazil
#18
Cesar Augusto Barbosa de Macedo, Madlaine Frigo Silveira Barbosa de Macedo, Ana Carolina Miura, Alessandra Taroda, Sergio Tosi Cardim, Elisabeth Ann Innes, Frank Katzer, German Jose Cantón, Francesca Chianini, Selwyn Arlington Headley, João Luis Garcia
The aim of the present study was to investigate the occurrence of N. caninum associated with abortions of dairy cattle from Santa Catarina state, southern Brazil by using enzyme-linked immunosorbent assay (ELISA), immunohistochemistry (IHC), and polymerase chain reaction (PCR). Blood from dairy cows that aborted along with intrathoracic fluid and tissue samples (brain, heart, liver, and lung) from their fetuses were collected and used for serology; PCR, histopathological, and immunohistochemistry (IHC) evaluations were also conducted...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28902262/morphological-and-morphometric-features-of-nematode-cysts-in-gymnotus-inaequilabiatus-liver-in-the-brazilian-pantanal
#19
Gizela Melina Galindo, Robson Andrade Rodrigues, Sandriely Fernanda Marcondes, Priscilla Soares, Luiz Eduardo Roland Tavares, Carlos Eurico Fernandes
The aim of this study was to determine the morphometric measures and morphological aspects of nematode-cysts in Gymnotus inaequilabiatus, and the presence of melanomacrophage centers (MMCs) associated with the periphery of cysts and in the liver parenchyma. Adult specimens, 34 female (123.1 ± 43.9g) and 45 male (135.5 ± 43.4g), from Paraguay River, Corumbá, Brazil, were used. The number of nematode-cysts was determined in 79 livers and 25 of them randomly selected for histopathological analysis and morphometric measures of nematode-cysts (mean diameter, thickness of collagen layer, and cyst-wall layer)...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28902260/hepatozoon-caimani-in-caiman-crocodilus-yacare-crocodylia-alligatoridae-from-north-pantanal-brazil
#20
Andréa Bouer, Marcos Rogério André, Luiz Ricardo Gonçalves, Mayara de Cássia Luzzi, Juliana Paula de Oliveira, Adriana Carlos Rodrigues, Alessandro de Melo Varani, Vitor Fernandes Oliveira de Miranda, Lívia Perles, Karin Werther, Rosangela Zacarias Machado
Hepatozoon species are the most common intracellular hemoparasite found in reptiles. Hepatozoon caimani, whose vectors are Culex mosquitoes, has been detected in a high prevalence among caimans in Brazil by blood smears examinations. The present work aimed to detect and characterize the Hepatozoon spp. found in 33 caimans (24 free-ranging and 9 captive; 28 males and 5 females) (Caiman crocodilus yacare) sampled at Poconé, North Pantanal, state of Mato Grosso, Brazil, using blood smears examinations and molecular techniques...
July 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
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