Revista Brasileira De Parasitologia Veterinaria最新文献_第3页

Anti-Neospora caninum and anti-Toxoplasma gondii antibodies in cattle intended for human consumption in the State of Espírito Santo, Brazil: prevalence and associated factors. 巴西圣州Espírito供人食用的牛中抗犬新孢子虫和抗刚地弓形虫抗体：流行率和相关因素。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-06-02 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025026

Samira Pereira Batista, Jordania Oliveira Silva, Carolina Magri Ferraz, João Pedro Barbosa de Assis, Gabriel Augusto Marques Rossi, Luiza Guilherme Daleprani, Fernando Luiz Tobias, Thais Ferreira Feitosa, Fábio Ribeiro Braga, Vinícius Longo Ribeiro Vilela

{"title":"Anti-Neospora caninum and anti-Toxoplasma gondii antibodies in cattle intended for human consumption in the State of Espírito Santo, Brazil: prevalence and associated factors.","authors":"Samira Pereira Batista, Jordania Oliveira Silva, Carolina Magri Ferraz, João Pedro Barbosa de Assis, Gabriel Augusto Marques Rossi, Luiza Guilherme Daleprani, Fernando Luiz Tobias, Thais Ferreira Feitosa, Fábio Ribeiro Braga, Vinícius Longo Ribeiro Vilela","doi":"10.1590/S1984-29612025026","DOIUrl":"10.1590/S1984-29612025026","url":null,"abstract":"The objective of this study was to describe the seroprevalence and factors associated with Neospora caninum and Toxoplasma gondii infections in cattle in the state of Espírito Santo, Brazil. Serum samples were collected from 600 slaughtered cattle and destined intended for consumption, originating from 27 municipalities. The samples were analyzed using the Indirect Immunofluorescence Test, with cut-off points for anti-N. caninum antibodies at 1:200 and for anti-T. gondii antibodies at 1:64. Positive samples were titrated until negative. Epidemiological questionnaires were applied to gather information about the properties and herds. The seroprevalence for N. caninum was 13.2% (79/600), with antibody titers ranging from 1:200 to 1:6400, and for T. gondii it was 12.5% (75/600), with titers ranging from 1:64 to 1:1024. In the multivariate analysis, the factor associated with N. caninum infection was a history of abortion (OR 6.483; CI 6.082-6.884; p < 0.01), and for T. gondii, contact with cats (OR 7.683; CI 7.172-8194; p < 0.005). The seroprevalences for N. caninum and T. gondii in cattle slaughtered for human consumption in Espírito Santo are significant, with a history of abortion being a factor associated with N. caninum infection and contact with cats associated with T. gondii infection.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e001225"},"PeriodicalIF":1.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143166/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144227336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous infestations in dogs by different tick species (Acari: Ixodidae) in two areas of the Western Brazilian Amazon. 巴西亚马逊西部两个地区不同蜱类（蜱螨：伊蚊科）对狗的同时感染。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-06-02 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025036

Ivaneide Nunes da Costa, Marcos Valério Garcia, Vanessa Paiva Dos Santos, Natalia Vitória Coelho Costa, Angélica Lorena Pereira Mendes Carioca, Renato Andreotti, Jansen Fernandes Medeiros, André de Abreu Rangel Aguirre

{"title":"Simultaneous infestations in dogs by different tick species (Acari: Ixodidae) in two areas of the Western Brazilian Amazon.","authors":"Ivaneide Nunes da Costa, Marcos Valério Garcia, Vanessa Paiva Dos Santos, Natalia Vitória Coelho Costa, Angélica Lorena Pereira Mendes Carioca, Renato Andreotti, Jansen Fernandes Medeiros, André de Abreu Rangel Aguirre","doi":"10.1590/S1984-29612025036","DOIUrl":"10.1590/S1984-29612025036","url":null,"abstract":"Although there are reports on many species of ticks infesting dogs, including from the Amazon region, simultaneous infestations by different species are poorly discussed in the literature. Therefore, this study aimed to report simultaneous infestations in dogs by different species of ticks, involving up to six species, in two areas of the western Brazilian Amazon, specifically in the border region between the states of Rondônia and Amazonas, in northern Brazil. Ticks were collected between 2021 and 2023 from dogs on private properties surrounding two conservation units: Municipal Natural Park of Porto Velho (NP), and Mapinguari National Park (MNP). The following species were identified: Amblyomma ovale, Amblyomma scalpturatum, Amblyomma latepunctatum, Amblyomma oblongogutattum, Amblyomma coelebs, Amblyomma naponense and Rhipicephalus sanguineus s.l.. Among the 342 dogs sampled, 184 were from the area around the NP and 158 were from the area around the MNP. A total of 34 dogs (9.9%) exhibited simultaneous tick species infestations, ranging from two to six tick species; 26 dogs (16.5%) with simultaneous infestations were from the MNP area, and eight dogs (4.3%) were from the NP area. This study is the first to report the simultaneous occurrence of four, five or six tick species on individual dogs.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e020324"},"PeriodicalIF":1.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143165/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144227339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First molecular detection of Sarcocystis arctica (Apicomplexa: Sarcocystidae) infecting crab-eating raccoon (Procyon cancrivorus) in Brazil. 在巴西首次检测到感染食蟹浣熊的北极肉囊菌（顶端复合体：肉囊菌科）。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-06-02 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025038

Julia Somavilla Lignon, Diego Moscarelli Pinto, Silvia Gonzalez Monteiro, Kauê Rodriguez Martins, Rodrigo Casquero Cunha, Diago Dutra Lima, Luíse Nunes Bonneau de Albuquerque, Camila Gonçalves da Silveira, Stanrley Victor Nascimento da Silva, Oluwagbemiga Ademola Dada, Matthew Ajani Ayoola, Felipe Geraldo Pappen, Fábio Raphael Pascoti Bruhn

{"title":"First molecular detection of Sarcocystis arctica (Apicomplexa: Sarcocystidae) infecting crab-eating raccoon (Procyon cancrivorus) in Brazil.","authors":"Julia Somavilla Lignon, Diego Moscarelli Pinto, Silvia Gonzalez Monteiro, Kauê Rodriguez Martins, Rodrigo Casquero Cunha, Diago Dutra Lima, Luíse Nunes Bonneau de Albuquerque, Camila Gonçalves da Silveira, Stanrley Victor Nascimento da Silva, Oluwagbemiga Ademola Dada, Matthew Ajani Ayoola, Felipe Geraldo Pappen, Fábio Raphael Pascoti Bruhn","doi":"10.1590/S1984-29612025038","DOIUrl":"10.1590/S1984-29612025038","url":null,"abstract":"The crab-eating raccoon (Procyon cancrivorus) is a wild carnivore with a broad geographic distribution, randing from Costa Rica to South America. This species remains understudied, particularly regarding Sarcocystis spp. infections. This study aimed to report the first molecular detection of Sarcocystis arctica in P. cancrivorus. The roadkill specimen, recovered from the highway of Pedro Osório, Rio Grande do Sul, Brazil, was subjected to necropsy. Tissues samples, bone marrow and blood were collected, and their genomic DNA was extracted. PCR amplification targeting 18S rRNA, COX1 and 28S genes, genetic sequencing and phylogenetic analysis confirmed the presence of S. arctica DNA in cardiac muscle samples. Molecular characterization showed 98.62-99.6% identity to sequences of this species deposited in GenBank. We report the first documentation of S. arctica infection in a P. cancrivorus heart sample. While species within the genus Procyon serve as definitive and intermediate hosts for other Sarcocystis species, it is uncertain whether P. cancrivorus acts as an aberrant host or plays a regular role in the protozoan life cycle, particularly in muscle tissue. Additionally, its impact on P. cancrivorus populations is still unknown, highlighting the need for further studies.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e021024"},"PeriodicalIF":1.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143164/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144227337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of immature stages of Ixodes bocatorensis (Ixodida: Ixodidae) on small mammals in the Maracanã Environmental Protection Area, São Luís, Maranhão, Brazil. 巴西maranh<e:1> o s<s:1> o Luís Maracanã环境保护区小兽类中未成熟阶段肉毒伊蚊（伊蚊目：伊蚊科）首次报道。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-06-02 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025028

Francielma Chaves Sousa Gonçalves, Alana Dos Santos Cardoso, Ana Karoline Sousa Mendes Simas, Débora Ellen Pinheiro Silva, Clauberth César Alves Carvalho, Davi Viegas Melo, Andréa Pereira da Costa, Rita de Maria Seabra Nogueira, Thiago Fernandes Martins, Marcelo Bahia Labruna, Francisco Borges Costa

{"title":"First report of immature stages of Ixodes bocatorensis (Ixodida: Ixodidae) on small mammals in the Maracanã Environmental Protection Area, São Luís, Maranhão, Brazil.","authors":"Francielma Chaves Sousa Gonçalves, Alana Dos Santos Cardoso, Ana Karoline Sousa Mendes Simas, Débora Ellen Pinheiro Silva, Clauberth César Alves Carvalho, Davi Viegas Melo, Andréa Pereira da Costa, Rita de Maria Seabra Nogueira, Thiago Fernandes Martins, Marcelo Bahia Labruna, Francisco Borges Costa","doi":"10.1590/S1984-29612025028","DOIUrl":"10.1590/S1984-29612025028","url":null,"abstract":"Research into ticks that feed on small mammals is important because they can be vectors of pathogenic bioagents that infect animals and humans. In this study, small mammals were captured in the Maracanã Environmental Protection Area, in the eastern Amazon biome (São Luís, Maranhão), and were visually inspected to detect the presence of ectoparasites. Overall, 10 (48%) out of 21 small mammals were infested by ticks, as follows: three Didelphis marsupialis (30 Amblyomma sp. larvae, and 2 Ixodes sp. nymphs); three Monodelphis domestica (three Ixodes sp. nymphs) and four Dasyprocta sp. rodents (three Amblyomma sp. larvae, three Ixodes sp. nymphs and 16 Ixodes sp. larvae), making a total of 57 tick specimens. Two of the collected nymphs were molecularly identified as Ixodes bocatorensis, based on mitochondrial 16S rRNA gene partial sequences. Since all eight Ixodes sp. nymphs collected in this study presented the same morphotype, the molecular identification of two specimens as I. bocatorensis supports the identification of all collected nymphs as belonging to this same tick species. This study provides host records for immature stages of I. bocatorensis for the first time. Additionally, a brief morphological description of the I. bocatorensis nymph is provided.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 3","pages":"e003425"},"PeriodicalIF":1.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12140632/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144227340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphology and molecular characterization of Ceratomyxa sp. (Cnidaria, Myxosporea, Ceratomyxidae), infecting the gallbladder of Curimata cyprinoides (Characiformes: Curimatidae) in the lower Araguaia River, Brazil. 巴西阿尔瓜亚河下游血吸虫（Curimata cyprinoides，特征：Curimata cyprinoides）胆囊感染的角蝇属（Ceratomyxa sp.）的形态和分子特征。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-05-23 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025014

Maria Josinete Araujo Costa, Maria Queroz Carneiro Silva, Marcelo Francisco da Silva, Evonnildo Costa Gonçalves

{"title":"Morphology and molecular characterization of Ceratomyxa sp. (Cnidaria, Myxosporea, Ceratomyxidae), infecting the gallbladder of Curimata cyprinoides (Characiformes: Curimatidae) in the lower Araguaia River, Brazil.","authors":"Maria Josinete Araujo Costa, Maria Queroz Carneiro Silva, Marcelo Francisco da Silva, Evonnildo Costa Gonçalves","doi":"10.1590/S1984-29612025014","DOIUrl":"10.1590/S1984-29612025014","url":null,"abstract":"This study reports the occurrence of a myxosporid parasite of the genus Ceratomyxa Thélohan, 1892 found in the gallbladder of Curimata cyprinoides Linnaeus, 1766. This species is abundant in the Tocantins-Araguaia hydrographic basin and holds environmental, social and economic importance. The genus Ceratomyxa is characterized by two equally-sized polar capsules with lateral projections, whick may appear slightly slightly arched in a half-moon shape or fully curved arched. Light microscopy and molecular analysis were employed in this study. The mature spores were composed of two equally-sized symmetrical valves with equal capsular foramina and two equally-sized lateral projections. These spores (n=40) were freely suspended in the gallbladder, with a total length of 11.2 ± 0.1 μm and width of 4.0 ± 0.3 μm. The polar capsules measured 2.1 ± 0.1 μm in both length and width; and the two symmetrical lateral elongations formed a posterior angle of 41.4º ± 0.7º. An integrated comparative analysis of the morphological characteristics and partial SSU rDNA sequences confirmed this finding as a parasite of the genus Ceratomyxa sp., located in the gallbladder of C. cyprinoides in the Tocantins-Araguaia basin, within the municipality of Araguatins, in eastern Amazon, Brazil.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e018924"},"PeriodicalIF":1.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12105820/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144227338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pulmonary pathology in white-eared opossums (Didelphis albiventris) with natural Heterostrongylus heterostrongylus () infections. 白耳负鼠（Didelphis albiventris）天然异圆线虫感染的肺部病理。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-05-19 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025022

Maria Izabel Pedra Sogari, Andressa Maria Rorato Nascimento de Matos, Felipe Martins Negreiros Navolar, Amanda Filus Marchese, Jorgeana Guadanhini Negrizolli, Fernando de Souza Rodrigues, Ana Paula Frederico Loureiro Bracarense

{"title":"Pulmonary pathology in white-eared opossums (Didelphis albiventris) with natural Heterostrongylus heterostrongylus () infections.","authors":"Maria Izabel Pedra Sogari, Andressa Maria Rorato Nascimento de Matos, Felipe Martins Negreiros Navolar, Amanda Filus Marchese, Jorgeana Guadanhini Negrizolli, Fernando de Souza Rodrigues, Ana Paula Frederico Loureiro Bracarense","doi":"10.1590/S1984-29612025022","DOIUrl":"10.1590/S1984-29612025022","url":null,"abstract":"Carcasses of road-killed wild animals provide critical insights into animal health and environmental conditions. However, data on the presence of lung parasites and their effects on the health of white-eared opossums are limited. This study examines lung parasites and their pathological effects on white-eared opossums (Didelphis albiventris) found in northern Paraná, Brazil. We collected and processed lung samples from 21 opossums using standard histological techniques. Lung nematodes were preserved and identified by their morphological traits. Heterostrongylus heterostrongylus (Travassos, 1925) was detected in nine animals (42.8%). Key histological observations included diffuse interstitial pneumonia, lymphoid tissue hyperplasia, pulmonary hemorrhage, smooth muscle hypertrophy in the pulmonary vessels, congestion, and edema. Although the immediate cause of death was hypovolemic or neurogenic shock from vehicular collisions, the findings underscore the significance of studying road-killed wild animals to evaluate wildlife health and environmental status. This research also documents the first instance of H. heterostrongylus lung infections in D. albiventris, suggesting that these parasites significantly impact lung health.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e021424"},"PeriodicalIF":1.3,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12094093/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ascaridia hermaphrodita (Froelich, 1789) and Ascaridia columbae (Gmelin, 1780) in neotropical psittacine birds. 新热带鹦鹉的雌雄蛔虫（Froelich, 1789）和柱蛔虫（Gmelin, 1780）。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-04-18 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025015

Octávio Augusto Serra Santos, Vanessa Kanaan, Hugo Lago de Sant'Anna Rocha, Reinaldo José da Silva, Tânia Freitas Raso

{"title":"Ascaridia hermaphrodita (Froelich, 1789) and Ascaridia columbae (Gmelin, 1780) in neotropical psittacine birds.","authors":"Octávio Augusto Serra Santos, Vanessa Kanaan, Hugo Lago de Sant'Anna Rocha, Reinaldo José da Silva, Tânia Freitas Raso","doi":"10.1590/S1984-29612025015","DOIUrl":"https://doi.org/10.1590/S1984-29612025015","url":null,"abstract":"Gastrointestinal parasites found in four Neotropical psittacine birds of the species Ara macao, Amazona aestiva, Amazona vinacea and Pionus maximiliani have been reported. The carcasses of the animals were received from commercial breeders and a rehabilitation center for necropsy. In total, 589 parasites were collected during the exams and submitted for morphological analysis and taxonomic identification. Twenty parasites from each host were cleaned with lactophenol and analyzed by light microscopy, while four parasites from each host were prepared for scanning electron microscopy. Tissue samples were forwarded for histological analysis in search of erratic larvae; however, none were found. Parasites from A. macao, A. aestiva and A. vinacea were identified as Ascaridia hermaphrodita, whereas parasites from P. maximiliani were identified as Ascaridia columbae, promoting the first report of A. columbae in P. maximiliani. All birds were kept in enclosures with access to the ground, facilitating parasitism. Pionus maximiliani and A. vinacea were kept together in the same enclosure with high population density. Additionally, synanthropic animals, such as Columbiformes, were observed in the same enclosure, facilitating infection with A. columbae. The identification of Ascaridia species that parasitizes psittacine birds helps to improve prevention and control measures, thus enhancing avian health and welfare.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e022224"},"PeriodicalIF":1.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12020731/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144056252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular and serological survey of Trypanosoma vivax in Crioulo Lageano Cattle from southern Brazil. 巴西南部克里乌洛·拉加诺牛间日锥虫的分子和血清学调查。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025019

Felipe Eduardo Fiorin, Mariana da Silva Casa, Leonardo Bergmann Griebeler, Mariana Fuchs Goedel, Gianlucca Simão Nadal Ribeiro, Luiz Flávio Nepomuceno do Nascimento, Gabriella Bassi das Neves, Graziela Vieira Fonteque, Luiz Cláudio Miletti, Mere Erika Saito, Joandes Henrique Fonteque

{"title":"Molecular and serological survey of Trypanosoma vivax in Crioulo Lageano Cattle from southern Brazil.","authors":"Felipe Eduardo Fiorin, Mariana da Silva Casa, Leonardo Bergmann Griebeler, Mariana Fuchs Goedel, Gianlucca Simão Nadal Ribeiro, Luiz Flávio Nepomuceno do Nascimento, Gabriella Bassi das Neves, Graziela Vieira Fonteque, Luiz Cláudio Miletti, Mere Erika Saito, Joandes Henrique Fonteque","doi":"10.1590/S1984-29612025019","DOIUrl":"https://doi.org/10.1590/S1984-29612025019","url":null,"abstract":"Bovine trypanosomiasis, caused by infection with the protozoan Trypanosoma vivax, is harmful to livestock worldwide. Knowing its epidemiology is relevant to evaluate the susceptibility, resistance, and tolerance of animals. The objective of this study was to determine the prevalence of T. vivax in Crioula Lageana cattle and relate them to clinical, hematological, and biochemical findings to elucidate the breed's health and disease tolerance characteristics. Venous blood samples from 310 bovines considered healthy during the clinical examination were used to perform polymerase chain reaction (PCR) analysis, Immunofluorescence Antibody Test (IFAT) assays, hemogram tests, and serum biochemistry. The collected data were subjected to statistical analyses to compare seropositive and negative groups. IFAT indicated that the seroprevalence for T. vivax was 8% (24/310); however, all tested animals were negative in the conventional PCR (0%, 0/310). Higher amounts of platelets and less cholesterol were detected in seropositive animals but were within the reference values. Ruminal hypomotility and mild tachycardia were observed in all sampled animals. Considering the non-specific clinical signs and the absence of hematological alterations in infected animals, the seropositivity found indicates previous exposure to the protozoan, and the absence of clinically affected animals may result from characteristics inherent to this breed.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 1","pages":"e019424"},"PeriodicalIF":1.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11999535/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144023728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Veterinary parasitologists: the time has come to talk about the use of the expressions "Protozoan" and "Protista". 兽医寄生虫学家：是时候讨论“原生动物”和“原生动物”这两个词的使用了。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025021

José Reck, Alynne da Silva Barbosa, Huarrison Azevedo Santos, Filipe Dantas-Torres, Marcos Rogério André, George Rego Albuquerque

{"title":"Veterinary parasitologists: the time has come to talk about the use of the expressions \"Protozoan\" and \"Protista\".","authors":"José Reck, Alynne da Silva Barbosa, Huarrison Azevedo Santos, Filipe Dantas-Torres, Marcos Rogério André, George Rego Albuquerque","doi":"10.1590/S1984-29612025021","DOIUrl":"https://doi.org/10.1590/S1984-29612025021","url":null,"abstract":"The classification of eukaryotic organisms has evolved significantly over the past years. For a long time, the five-kingdom model proposed in 1969, which included the kingdoms Monera, Protista, Fungi, Plantae, and Animalia, dominated biological classification. However, recent advances in molecular biology, particularly phylogenomic studies, have challenged this classification as it does not accurately represent the evolutionary patterns of a vast diversity of organisms, especially those formerly known as protozoa. Currently, Protista is no longer considered a valid taxon, as the organisms previously classified in this group are highly divergent and not monophyletic. Modern approaches now classify eukaryotes into several supergroups, with \"protozoa\" now dispersed among different groups. For example, parasites once grouped as \"protozoa,\" such as Babesia (Apicomplexa), Trypanosoma (Euglenozoa), and Entamoeba (Evosea), are now placed into distant branches of the tree of life and within different supergroups. Although this supergroup classification may change in the coming years, it provides a more accurate representation of evolutionary relationships among eukaryotes. However, this issue has not been adequately discussed by the veterinary parasitology community. This article advocates revisiting these terms in light of modern classification systems to ensure a more accurate and biologically realistic terminology that reflects current knowledge.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 2","pages":"e020124"},"PeriodicalIF":1.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11999532/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144062604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiparasitism by myxozoans in Pygocentrus nattereri (Characiformes: Serrasalmidae) from Sacaizal Lake, in the municipality of Pracuúba, state of Amapá, Brazil. 巴西阿马ap<e:1>州Pracuúba市Sacaizal湖水蚤黏液虫的多重寄生研究

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/S1984-29612025020

Nayana Moraes de Sena, Jhonata Eduard, Camila Maria Barbosa Pereira, José Ledamir Sindeaux Neto, Michele Velasco

{"title":"Multiparasitism by myxozoans in Pygocentrus nattereri (Characiformes: Serrasalmidae) from Sacaizal Lake, in the municipality of Pracuúba, state of Amapá, Brazil.","authors":"Nayana Moraes de Sena, Jhonata Eduard, Camila Maria Barbosa Pereira, José Ledamir Sindeaux Neto, Michele Velasco","doi":"10.1590/S1984-29612025020","DOIUrl":"https://doi.org/10.1590/S1984-29612025020","url":null,"abstract":"The present study described the morphological characteristics of myxospores of cnidarians belonging to the class Myxozoa at different infection sites in Pygocentrus nattereri Kner 1858 (Characiformes: Serrasalmidae), found in Lake Sacaizal, in the municipality of Pracuúba, state of Amapá, Brazil. In 44% of the specimens analyzed, myxospore gill filaments of the genus Henneguya were observed with a pyriform sporal body, presenting long caudal projections internally, with two polar capsules. In some filaments, branchial arches, and fin cysts (with a prevalence of 22%) pyriform Myxobolus myxospores were observed, which were larger than those found in the caudal kidneys, where the myxospores had an elliptical shape, demonstrating the presence of two morphotypes in the same host. Thus, these morphological data contribute to the diversity of myxozoans in Amazonian fish, particularly P. nattereri in their natural environment, with the first occurrence of these parasite genera in this host.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"34 1","pages":"e001125"},"PeriodicalIF":1.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11999538/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144008664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0