Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria最新文献_第9页

Acaricidal effect of major compounds to control Rhipicephalus microplus (Canestrini, 1887) in dairy cows and possible alternatives for reversing multidrug resistance. 主要化合物控制奶牛微头虫(Canestrini, 1887)的杀螨效果及逆转多药耐药的可能替代方法。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022028

Carla Juliana Ribeiro Dolenga, Alan Dos Anjos, Victor Hugo Granza Barbosa, Ursula Yaeko Yoshitani, Prisciane Leme da Silva Piuci Castilho, Vanessa Issuzu Miyakawa, Marcelo Beltrão Molento

{"title":"Acaricidal effect of major compounds to control Rhipicephalus microplus (Canestrini, 1887) in dairy cows and possible alternatives for reversing multidrug resistance.","authors":"Carla Juliana Ribeiro Dolenga, Alan Dos Anjos, Victor Hugo Granza Barbosa, Ursula Yaeko Yoshitani, Prisciane Leme da Silva Piuci Castilho, Vanessa Issuzu Miyakawa, Marcelo Beltrão Molento","doi":"10.1590/S1984-29612022028","DOIUrl":"https://doi.org/10.1590/S1984-29612022028","url":null,"abstract":"Tick control represent a great challenge to animal health. The objective of this study was to evaluate the efficacy of acaricidal compounds against Rhipicephalus microplus from dairy cattle systems in Paraná State, Brazil. Six farms (PR1-PR6) were selected, where anti-tick products were applied at fixed intervals. Two other farms that adopted alternative protocols; target selective treatment (PRS), and individual-based agroecological protocol (PRA) were also included in the trial. Fully engorged R. microplus were collected for the in vitro adult immersion test (AIT), and the egg hatch test (EHT) in all eight populations. The larval packet test (LPT) was used on PR6 and PRA tick populations. The treatment groups were composed of G1: dichlorvos 45% plus cypermethrin 5%, G2: deltamethrin 2.5%, G3: cypermethrin 15%, chlorpyriphos 25%, plus citronellal 1%, and G4: amitraz 12.5%. The efficacy at PR1 to PR6 revealed that G3 and G4 achieved moderate to high efficacy, from 75.0 to 100.0% and 73 to 98%, respectively. In the LPT, the efficacy at PR6 was 76.0, 67.0, 93.0 and 30.6%, while PRA presented 100.0, 100.0, 100.0, and 54.0%, for G1, G2, G3 and G4, respectively. Sustainable parasite control strategies are discussed.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 2","pages":"e005422"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901876/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9447488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Helminth community structure of Didelphis marsupialis (Didelphimorphia, Didelphidae) in a transition area between the Brazilian Amazon and the Cerrado. 巴西亚马逊河流域与塞拉多河流域过渡区有袋袋蝗群落结构。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022031

L. C. Freitas, A. Maldonado Júnior, R. F. B. Mendonça, D. G. S. Ramos, R. Rossi, R. Pacheco, R. Gentile

{"title":"Helminth community structure of Didelphis marsupialis (Didelphimorphia, Didelphidae) in a transition area between the Brazilian Amazon and the Cerrado.","authors":"L. C. Freitas, A. Maldonado Júnior, R. F. B. Mendonça, D. G. S. Ramos, R. Rossi, R. Pacheco, R. Gentile","doi":"10.1590/S1984-29612022031","DOIUrl":"https://doi.org/10.1590/S1984-29612022031","url":null,"abstract":"Although the common opossum, Didelphis marsupialis (Didelphimorphia: Didelphidae) is a species widely distributed in South America, knowledge about their helminth parasites and helminth community structure is scarce. The aims of this study were to describe the species composition and analyze the structure of the helminth community of the common opossum in an area of the Amazonian Arc in northern Mato Grosso. The helminths were recovered, counted, and identified in 32 individuals. Overall, 10,198 specimens were categorized into 9 helminths taxa (seven nematodes, one cestode, and one acanthocephalan). The most abundant species were Aspidodera raillieti, Viannaia hamata, and Travassostrongylus orloffi. No statistically significant differences in helminth abundance and prevalence were observed between host sexes. However, young hosts had higher abundance and prevalence of Didelphonema longispiculata, whereas Oligacanthorhynchus microcephalus had higher abundance and prevalence in adult hosts. This was the first study to analyze the helminth fauna and helminth community structure of D. marsupialis in the Amazonian Arc. This is the first report of the presence of A. raillieti, D. longispiculata, T. orloffi, T. minuta, V. hamata, and O. microcephalus in the state of Mato Grosso, Brazil.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"19 1","pages":"e002922"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81484271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Anthelmintic efficacy of oxibendazole against gastrointestinal nematodes in swine. 氧苯达唑对猪胃肠线虫的驱虫效果。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022009

Rafael Paranhos de Mendonça, Daniela Oliveira Carneiro, Eliane Marucci Baccin, Márcia Richena Pirágine, Sara Menegatti Zoca, Luis Augusto Ferreira Rossa, Guilherme Cecílio Lima, Francismar Barbosa de Oliveira, Istanlei Soares Costa, Gabriel Nunes de Oliveira, Sabrina Nathália Louzada Nogueira, Thaís Rabelo Dos Santos-Doni

{"title":"Anthelmintic efficacy of oxibendazole against gastrointestinal nematodes in swine.","authors":"Rafael Paranhos de Mendonça, Daniela Oliveira Carneiro, Eliane Marucci Baccin, Márcia Richena Pirágine, Sara Menegatti Zoca, Luis Augusto Ferreira Rossa, Guilherme Cecílio Lima, Francismar Barbosa de Oliveira, Istanlei Soares Costa, Gabriel Nunes de Oliveira, Sabrina Nathália Louzada Nogueira, Thaís Rabelo Dos Santos-Doni","doi":"10.1590/S1984-29612022009","DOIUrl":"https://doi.org/10.1590/S1984-29612022009","url":null,"abstract":"In swine production, parasites, especially gastrointestinal helminths, generate considerable economic losses. Therefore, effective control measures, such as the use of the correct anthelmintics, are of paramount importance for maintaining profitability. The aim of the present study was to evaluate the efficacy of the anthelmintic oxibendazole, administered orally, in pigs (non-industrial) naturally infected with gastrointestinal nematodes. To that end, we selected 18 pigs naturally parasitized by gastrointestinal nematodes, as determined by examination of fecal samples (eggs per gram (EPG > 500) of feces), and divided them into two groups: treated (with a 10-day course of oxibendazole) and control (untreated). After the treatment period, the animals were euthanized. During necropsy, the helminths in the gastrointestinal tract were identified and quantified. The species identified were, in order of occurrence, Ascaris suum, Trichuris suis, Oesophagostomum dentatum, and Hyostrongylus rubidus. In Brazilian swine herds, traditional (non-industrial) production systems can favor the transmission of helminths. We found that treatment with oxibendazole was 100% effective against A. suum and H. rubidus, whereas it was 99.65% effective against O. dentatum and 99.20% effective against T. suis, significantly reducing helminth counts (P < 0.01 for all). We conclude that oxibendazole is effective in controlling the main helminths in swine.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 1","pages":"e018321"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10871926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Albendazole is effective for controlling monogenean parasites of the gills of Piaractus brachypomus (Serrasalmidae) and Megaleporinus macrocephalus (Anostomidae). 阿苯达唑对短肢棘足鼠(Serrasalmidae)和大头巨孢子虫(Anostomidae)鳃单系寄生虫有较好的防治效果。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022057

Luciano Pereira Negreiros, Eliane Xavier Souza, Tiago Araújo Lima, Marcos Tavares-Dias

{"title":"Albendazole is effective for controlling monogenean parasites of the gills of Piaractus brachypomus (Serrasalmidae) and Megaleporinus macrocephalus (Anostomidae).","authors":"Luciano Pereira Negreiros, Eliane Xavier Souza, Tiago Araújo Lima, Marcos Tavares-Dias","doi":"10.1590/S1984-29612022057","DOIUrl":"https://doi.org/10.1590/S1984-29612022057","url":null,"abstract":"Monogenean infestations can cause high mortality in farmed fish and therefore significant economic losses. The present study investigated the efficacy of albendazole in therapeutic baths against monogeneans of Piaractus brachypomus Cuvier, 1818 and Megaleporinus macrocephalus (Garavello & Britski, 1988). For both fish, a 24 hours therapeutic bath with albendazole concentrations of 150, 300 and 500 mg/L were tested against monogeneans from the gills. The baths had an efficacy from 61.4 ± 32.9 (95%CI=64.5) against monogeneans of P. brachypomus, and from 95.4 ± 5.6 (95%CI=10.9) against monogeneans of M. macrocephalus. In P. brachypomus, the hepatosomatic index (HSI) in fish exposed to 150 mg/L of albendazole was higher than in fish exposed to 300 mg/L. The splenosomatic index (SSI) values in fish exposed to 150 mg/L of albendazole were lower than in fish exposed to 300 mg/L. In M. macrocephalus, the HSI and SSI values decreased in treatments with 150, 300 and 500 mg/L of albendazole to control and treat infestations by monogeneans. For M. macrocephalus, 150 mg/L of albendazole can be used to control and treat infestations by monogeneans, while for P. brachypomus 500 mg/L of albendazole can be used in a 24 hours bath.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 4","pages":"e010322"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901879/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9081583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Litomosoides brasiliensis (Nematoda: Onchocercidae) infecting chiropterans in the Legal Amazon region, Brazil. 巴西亚马孙地区盘尾丝虫病(线虫:盘尾丝虫科)

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022059

Thaliane França Costa, Danielle Jordany Barros Coutinho, Ana Karoline Sousa Mendes Simas, Gabriella Vieira Dos Santos, Rita de Maria Seabra Nogueira, Francisco Borges Costa, Maria Claudene Barros, Elmary da Costa Fraga, Andréa Pereira da Costa

{"title":"Litomosoides brasiliensis (Nematoda: Onchocercidae) infecting chiropterans in the Legal Amazon region, Brazil.","authors":"Thaliane França Costa, Danielle Jordany Barros Coutinho, Ana Karoline Sousa Mendes Simas, Gabriella Vieira Dos Santos, Rita de Maria Seabra Nogueira, Francisco Borges Costa, Maria Claudene Barros, Elmary da Costa Fraga, Andréa Pereira da Costa","doi":"10.1590/S1984-29612022059","DOIUrl":"https://doi.org/10.1590/S1984-29612022059","url":null,"abstract":"Chiropterans play an important role in the maintenance of the environmental balance, since they are pollinators, seed dispersers and predators. They contribute to transmission and spreading of microorganisms such as helminths, fungi, protozoa, bacteria and virus. The aim of the present study was to investigate natural filariid infection among bats in the Legal Amazon region, Brazil, by means of parasitological and molecular analyses. Blood samples were collected from 82 bats for blood smears and for DNA extraction via the polymerase chain reaction (PCR) assay. Microfilariae were observed in blood smears from Carollia perspicillata (2), Artibeus lituratus (1), Artibeus fimbriatus (2), Dermanura gnoma (2) and Glossophaga soricina (1). Five positive samples were detected through the PCR assay and four of these were also positive in blood smears. From genome sequencing and comparative analysis with sequences deposited in GenBank, one sample showed 99.31% similarity to the species Litomosoides brasiliensis. The present study expands the geographical distribution of L. brasiliensis, to include the state of Maranhão as an area of occurrence of this species and includes D. gnoma and A. fimbriatus as hosts in Brazil.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 4","pages":"e011722"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901862/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9072890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Absence of Trichinella spp. larvae in carcasses of road-killed wild animals in Paraná state, Brazil. 巴西帕拉纳<e:1>州公路死亡野生动物尸体中未发现旋毛虫幼虫。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022054

Rafaela Maria Boson Jurkevicz, Douglas Aparecido da Silva, José Maurício Ferreira Neto, Andressa Maria Rorato Nascimento de Matos, Bárbara Giglio Pires, Aline Ticiani Pereira Paschoal, Fernanda Pinto-Ferreira, Ana Paula Frederico Loureiro Bracarense, Regina Mitsuka-Breganó, Roberta Lemos Freire, Italmar Teodorico Navarro, Eloiza Teles Caldart

{"title":"Absence of Trichinella spp. larvae in carcasses of road-killed wild animals in Paraná state, Brazil.","authors":"Rafaela Maria Boson Jurkevicz, Douglas Aparecido da Silva, José Maurício Ferreira Neto, Andressa Maria Rorato Nascimento de Matos, Bárbara Giglio Pires, Aline Ticiani Pereira Paschoal, Fernanda Pinto-Ferreira, Ana Paula Frederico Loureiro Bracarense, Regina Mitsuka-Breganó, Roberta Lemos Freire, Italmar Teodorico Navarro, Eloiza Teles Caldart","doi":"10.1590/S1984-29612022054","DOIUrl":"https://doi.org/10.1590/S1984-29612022054","url":null,"abstract":"Trichinella spp. are zoonotic parasites that are widely distributed in warm-blooded carnivores and omnivores, including humans. Until the present moment, Brazil has been considered by World Animal Health Organization free from the domestic cycle of trichinellosis, whereas the parasite's sylvatic cycle has the status of infection in limited zones. However, neighboring countries such as Argentina have reports of parasite larvae in the wild fauna. The present study aimed to determine the occurrence of Trichinella spp. in road-killed wild animals in Paraná, Brazil. Biological samples from 71 wild animals-29 Didelphis albiventris, 11 Nasua nasua, ten Cerdocyon thous, seven Dasypus novemcinctus, six Leopardus guttulus, six Sphiggurus spinosus and two Puma concolor-collected from November 2016 to November 2021 were subjected to artificial digestion, following the methodology described in the REGULATION (EC) No. 2075/2005. No Trichinella spp. larvae were detected in the carcasses of the road-killed wild animals. However, considering the wide spectrum of possible reservoirs that could act as a link between the sylvatic and domestic cycles and considering the current Brazilian status of sylvatic trichinellosis in limited zones, frequent monitoring of wild fauna remains necessary.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 4","pages":"e010622"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901860/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9431631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecology and diversity of metazoan parasites infecting Geophagus altifrons (Cichliformes: Cichlidae) from the Amazon River system in northern Brazil. 巴西北部亚马逊河水系高地食蝗(石蝗目:石蝗科)后生寄生虫的生态学和多样性。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022014

Ivanildo Amanajás Brito-Júnior, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias

{"title":"Ecology and diversity of metazoan parasites infecting Geophagus altifrons (Cichliformes: Cichlidae) from the Amazon River system in northern Brazil.","authors":"Ivanildo Amanajás Brito-Júnior, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias","doi":"10.1590/S1984-29612022014","DOIUrl":"https://doi.org/10.1590/S1984-29612022014","url":null,"abstract":"The aim of this study was to investigate the ecology and diversity of community and infracommunities of metazoan parasites Geophagus altifrons (Heckel, 1840) in Rio Jari, in the state of Amapá, in the eastern Amazon region. From the total of 31 fish examined, 90.3% were parasitized by one or more species, collecting a total number of 806 parasites. The parasites species identified were: Sciadicleithrum geophagi, Posthodiplostomum sp., Procamallanus (Spirocamallanus) inopinatus, Raphidascaris (Sprentacaris) sp., Genarchella genarchella, Gorytocephalus spectabilis and Ergasilus xinguensis. Most of the parasites showed an aggregate dispersion pattern. Brillouin diversity index, uniformity and species richness of parasites were low. The component community of parasites was constituted by ectoparasites and endoparasites, but with a predominance of ectoparasites. The body size of hosts had a low effect on the parasites infracommunities. This first eco-epidemiological study for G. altifrons reports these parasites in a host, for the first time, with the exception of S. geophagi and E. xinguensis.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 1","pages":"e019721"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901859/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10871930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Outbreak of toxoplasmosis associated with muscular lesions in finishing pigs caused by an atypical Toxoplasma gondii genotype. 由非典型刚地弓形虫基因型引起的育肥猪肌肉病变相关弓形虫病暴发

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022055

Manoela Marchezan Piva, Paula Reis Pereira, Claiton Ismael Schwertz, Márcia Elisa Hammerschmitt, Marina Paula Lorenzett, Luan Cleber Henker, David Driemeier, Yara Souza Clemes, Hilda Fátima Jesus Pena, Saulo Petinatti Pavarini

{"title":"Outbreak of toxoplasmosis associated with muscular lesions in finishing pigs caused by an atypical Toxoplasma gondii genotype.","authors":"Manoela Marchezan Piva, Paula Reis Pereira, Claiton Ismael Schwertz, Márcia Elisa Hammerschmitt, Marina Paula Lorenzett, Luan Cleber Henker, David Driemeier, Yara Souza Clemes, Hilda Fátima Jesus Pena, Saulo Petinatti Pavarini","doi":"10.1590/S1984-29612022055","DOIUrl":"https://doi.org/10.1590/S1984-29612022055","url":null,"abstract":"Toxoplasma gondii infections are usually asymptomatic in pigs, and an acute clinical disease is rare in this host. This study aimed to determine the pathological and molecular aspects of an outbreak of fatal systemic toxoplasmosis in finishing pigs in Brazil. The outbreak occurred on a commercial finishing pig farm in the state of Santa Catarina in southern Brazil. The farm had 1500 pigs and 3.8% of mortality rate during the outbreak. The pigs had fever, anorexia, apathy, and locomotor deficits. Seven pigs were necropsied. Gross findings included multifocal to coalescent pale areas in skeletal muscles, lymphadenomegaly, hepatosplenomegaly, and non-colapsed lungs. The histological findings included granulomatous lymphadenitis, hepatitis and splenitis, necrotizing myositis, and lymphoplasmacytic interstitial pneumonia. Lung and liver lesions were occasionally accompanied by T. gondii parasitic structures. Positive immunolabeling for T. gondii tachyzoites and encysted bradyzoites was detected in all examined pigs. PCR-RFLP (11 markers) and microsatellite analysis (15 markers) identified the non-archetypal genotype #278 in pigs. This is the first report of systemic toxoplasmosis in pigs with muscle lesions and additionally shows the diversity of disease-causing T. gondii genotypes circulating in animals in Brazil.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 4","pages":"e011622"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901883/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9077935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Occurrence of Aelurostrongylus abstrusus in domestic cats in Vilhena, Rondônia, Brazil. 巴西Vilhena市Rondônia家猫中隐杆线虫的发生情况。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022053

Enny Caroline Ferreira Farago, Acácio Duarte Pacheco, Patrícia Fernandes Nunes da Silva Malavazi, Mariasole Colombo, Simone Morelli, Angela Di Cesare, Soraia Figueiredo de Souza

{"title":"Occurrence of Aelurostrongylus abstrusus in domestic cats in Vilhena, Rondônia, Brazil.","authors":"Enny Caroline Ferreira Farago, Acácio Duarte Pacheco, Patrícia Fernandes Nunes da Silva Malavazi, Mariasole Colombo, Simone Morelli, Angela Di Cesare, Soraia Figueiredo de Souza","doi":"10.1590/S1984-29612022053","DOIUrl":"https://doi.org/10.1590/S1984-29612022053","url":null,"abstract":"Abstract Aelurostrongylosis, caused by the metastrongylid nematode Aelurostrongylus abstrusus, is an underestimated feline respiratory disease. Cats infected by A. abstrusus may show subclinical to severe clinical signs. Aelurostrongylus abstrusus has a worldwide distribution. Nevertheless, studies on this parasite in Brazil are scarce, and most have been conducted in the southern regions. This study investigated the occurrence of A. abstrusus in cats in Vilhena, Rondônia, Brazil, from April 2020 to February 2021. Three consecutive individual fecal samples from 101 cats were examined using Baermann and Hoffman tests. Two cats (1.98%) scored positive for A. abstrusus, one with the Baermann examination, and one with the Hoffman technique. No other lungworms were retrieved. The clinicopathological and epizootiological implications are described and discussed.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 4","pages":"e008622"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901858/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9079031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of techniques for diagnosis of Trypanosoma vivax infections in naturally infected cattle in the Zona da Mata Mineira. 马塔米内拉区自然感染牛中间日锥虫感染诊断技术评价。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-01-01 DOI: 10.1590/S1984-29612022007

Jefferson Filgueira Alcindo, Maria Clara Guimarães Vieira, Thamiris Vilela Pereira Rocha, Cinthya Brillante Cardinot, Maurício Deschk, Gláucia Guimarães Amaral, Rafael Ferreira de Araujo, Carina Franciscato, Kayo José Garcia de Almeida Castilho Neto, Rosângela Zacarias Machado, Marcos Rogério André

{"title":"Evaluation of techniques for diagnosis of Trypanosoma vivax infections in naturally infected cattle in the Zona da Mata Mineira.","authors":"Jefferson Filgueira Alcindo, Maria Clara Guimarães Vieira, Thamiris Vilela Pereira Rocha, Cinthya Brillante Cardinot, Maurício Deschk, Gláucia Guimarães Amaral, Rafael Ferreira de Araujo, Carina Franciscato, Kayo José Garcia de Almeida Castilho Neto, Rosângela Zacarias Machado, Marcos Rogério André","doi":"10.1590/S1984-29612022007","DOIUrl":"https://doi.org/10.1590/S1984-29612022007","url":null,"abstract":"This study aimed to evaluate diagnostic techniques for trypanosomiasis, caused by Trypanosoma vivax, in naturally infected cattle in Minas Gerais, Zona da Mata. The deaths of six lactating cows with similar clinical conditions-characterized by hyporexia, hypogalactia, and recumbency-had been reported from one property. Initially, two animals were examined and diagnosed with trypanosomiasis through identification of the protozoan in a blood smear. After the initial diagnosis, all lactating cows (n=37) on the property were examined, and blood samples were collected for tests including whole blood smear, buffy coat smear, Woo's technique, enzyme-linked immunosorbent assay (ELISA), and polymerase chain reaction (PCR). Woo's test, buffy coat smears, and whole blood smears indicated that 4/37 (10.81%) animals were positive for trypanosomiasis, whereas ELISA and PCR indicated that 33/37 (89.19%) and 27/37 (72.97%) animals, respectively, were positive. The agreement obtained between parasitological techniques was classified as high, while between ELISA and PCR, no agreement. In conclusion, parasitological techniques have a low capacity to identify infected animals in the chronic stage of T. vivax infection. Therefore, techniques such as PCR and/or ELISA should be used to minimize the occurrence of false negatives.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"31 1","pages":"e018021"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901852/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10871927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0