Revista Brasileira De Parasitologia Veterinaria最新文献

Lobatozoum woodi n. sp. (Digenea: Didymozoidae) parasitizing Euthynnus alletteratus (Scombriformes: Scombridae) in the coast of the State of Rio de Janeiro, Brazil. 寄生于巴西里约热内卢州海岸 Euthynnus alletteratus（鲭形目：鲭科）的 Lobatozoum woodi n. sp.（Digenea: Didymozoidae）。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-11-04 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024065

Robertta Gitahy Freire, Marcia Cristina Nascimento Justo, Yuri Costa Meneses, Alena Mayo Iñiguez, Simone Chinicz Cohen

{"title":"Lobatozoum woodi n. sp. (Digenea: Didymozoidae) parasitizing Euthynnus alletteratus (Scombriformes: Scombridae) in the coast of the State of Rio de Janeiro, Brazil.","authors":"Robertta Gitahy Freire, Marcia Cristina Nascimento Justo, Yuri Costa Meneses, Alena Mayo Iñiguez, Simone Chinicz Cohen","doi":"10.1590/S1984-29612024065","DOIUrl":"10.1590/S1984-29612024065","url":null,"abstract":"The aim of this study was to describe a new species of Didymozoidae (Trematoda) found in the mesentery of Euthynnus alletteratus (Rafinesque) off Cabo Frio, in the coastal area of the state of Rio de Janeiro, Brazil. Thirty specimens of E. alletteratus were obtained between August 2023 and June 2024, directly from traders who sell fresh fish in markets. The parasites were fixed in AFA (93% ethanol 70%, 5% formaldehyde and 2% glacial acetic acid) with or without compression, stained with Langeron's hydrochloric carmine, dehydrated in an alcohol series, clarified in clove oil and mounted in Canada balsam as permanent slides. The new species was assigned to the genus Lobatozoum Ishii, 1935, mainly by the presence of lobes in the posterior region of the body and by the arrangement of the testes, ovary and vitellaria. Lobatozoum woodi n. sp. differs from all congeneric species mainly by presenting three testicular tubules, by the size of pharynx, larger than the oral sucker, and by the absence of digestive glands cells in esophagus and initial portion of caeca. The finding of a new species of Lobatozoum represents the eleventh valid species in the genus.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 4","pages":"e016624"},"PeriodicalIF":1.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11578427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142584769","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

Serological and molecular diagnosis of Trypanosoma vivax on buffalos (Bubalus bubalis) and their ectoparasites in the lowlands of Maranhão, Brazil. 对巴西马拉尼昂低洼地区水牛（Bubalus bubalis）及其体外寄生虫体内的活体锥虫进行血清学和分子诊断。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-28 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024066

Thais Bastos Rocha Serra, Andrea Teles Dos Reis, Carla Fernanda do Carmo Silva, Raynara Fernanda Silva Soares, Simone de Jesus Fernandes, Luiz Ricardo Gonçalves, Andrea Pereira da Costa, Rosangela Zacarias Machado, Rita de Maria Seabra Nogueira

{"title":"Serological and molecular diagnosis of Trypanosoma vivax on buffalos (Bubalus bubalis) and their ectoparasites in the lowlands of Maranhão, Brazil.","authors":"Thais Bastos Rocha Serra, Andrea Teles Dos Reis, Carla Fernanda do Carmo Silva, Raynara Fernanda Silva Soares, Simone de Jesus Fernandes, Luiz Ricardo Gonçalves, Andrea Pereira da Costa, Rosangela Zacarias Machado, Rita de Maria Seabra Nogueira","doi":"10.1590/S1984-29612024066","DOIUrl":"10.1590/S1984-29612024066","url":null,"abstract":"The aim of this study was to detect trypomastigote forms of Trypanosoma vivax, in blood smears, DNA of T. vivax and anti-T. vivax antibodies in samples from buffalos reared in the lowlands of Maranhão, Brazil. Blood samples were collected from 116 buffalos and 25 ectoparasite specimens. Blood smears were produced to diagnose forms compatible with Trypanosoma spp.; the indirect enzyme-linked immunosorbent assay (iELISA) and lateral-flow immunochromatography (Imunotest®) serological tests were used; and the polymerase chain reaction (PCR) was used to make molecular diagnoses. No forms compatible with Trypanosoma spp. were observed in blood smears. Among the 116 serum samples analyzed, 79.31% and 76.72% were positive in the ELISA and rapid tests, respectively. One sample was positive in the molecular test. Twenty-five lice of the species Haematopinus tuberculatus were collected. When subjected to PCR for detection of DNA of T. vivax, all of them were negative. The louse specimens were negative for T. vivax. There were no statistically significant differences (p < 0.05) in the presence of T. vivax in this region, in relation to the animals' age and sex. It can be concluded that these protozoa are circulating in the buffalo herd of the lowlands of Maranhão displaying crypitc parasitemias.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 4","pages":"e003424"},"PeriodicalIF":1.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11578426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142548502","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

Ceratomyxa matosi n. sp. (Myxozoa: Ceratomyxidae) parasitizing the gallbladder of Boulengerella cuvieri (Characiformes: Ctenoluciidae) State of Amapá, Brazilian Amazon. Ceratomyxa matosi n. sp. (Myxozoa: Ceratomyxidae) parasitizing the gallbladder of Boulengerella cuvieri (Characiformes: Ctenoluciidae) State of Amapá, Brazilian Amazon.

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024058

Clemildo Silva Martel, Fábio de Abreu E Souza, Samuel Carvalho Vidal, Abthyllane Amaral de Carvalho, Igor Guerreiro Hamoy, Lilia Suzane de Oliveira Nascimento, Marcela Nunes Videira

{"title":"Ceratomyxa matosi n. sp. (Myxozoa: Ceratomyxidae) parasitizing the gallbladder of Boulengerella cuvieri (Characiformes: Ctenoluciidae) State of Amapá, Brazilian Amazon.","authors":"Clemildo Silva Martel, Fábio de Abreu E Souza, Samuel Carvalho Vidal, Abthyllane Amaral de Carvalho, Igor Guerreiro Hamoy, Lilia Suzane de Oliveira Nascimento, Marcela Nunes Videira","doi":"10.1590/S1984-29612024058","DOIUrl":"10.1590/S1984-29612024058","url":null,"abstract":"Myxozoa is a class of the Phylum Cnidaria made up of endoparasites from aquatic habitats. The genus Ceratomyxa preferentially infects marine fish, with the gallbladder being the main site parasitized. This study aimed to describe a new species of Ceratomyxa found in this organ in Boulengerella cuvieri using morphological, morphometric characterization and phylogenetic analysis of 18S rDNA gene sequences. Specimens of B. cuvieri were collected, anesthetized, desensitized and biometric measurements were performed. The organs were analyzed under a stereomicroscope and fragments of internal organs were extracted for light microscopy analysis, preserved in 80% ethanol for 18S rDNA gene analysis and fixed in Davidson solution for histological processing. Free spores of Ceratomyxa were observed in the gallbladder, in plasmodia with wave-like movements, with the following dimensions: spore width (24.5 ± 0.4) µm, spore length (5.2 ± 0.3) µm, polar capsule width (1.8 ± 0.2) µm, polar capsule length (2.1 ± 0.3) µm, number of polar tubule turns (4-5) and 100% prevalence. Phylogenetic analysis confirmed that Ceratomyxa matosi n. sp. is a new species, grouped with other freshwater Ceratomyxa species from the Amazon, representing the second description of species of this genus in the state of Amapá.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e011024"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486459/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394511","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

Ticks (Acari: Ixodidae) and tick-borne agents associated with domestic dogs in an environmental protection area in Brazil, with molecular evidence of Rhipicephalus linnaei (Audouin, 1826). 巴西环境保护区内与家犬有关的蜱（蛔虫：Ixodidae）和蜱传病原体，以及 Rhipicephalus linnaei (Audouin, 1826) 的分子证据。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024045

Hélio Freitas Santos, Walter Flausino, Thiago Fernandes Martins, Igor Silva Silito, Hermes Ribeiro Luz, Maria Carolina de Azevedo Serpa, Marcelo Bahia Labruna, João Luiz Horacio Faccini

{"title":"Ticks (Acari: Ixodidae) and tick-borne agents associated with domestic dogs in an environmental protection area in Brazil, with molecular evidence of Rhipicephalus linnaei (Audouin, 1826).","authors":"Hélio Freitas Santos, Walter Flausino, Thiago Fernandes Martins, Igor Silva Silito, Hermes Ribeiro Luz, Maria Carolina de Azevedo Serpa, Marcelo Bahia Labruna, João Luiz Horacio Faccini","doi":"10.1590/S1984-29612024045","DOIUrl":"10.1590/S1984-29612024045","url":null,"abstract":"Wild animals and domestic dogs living in human dwellings near forested areas can share ectoparasites, including ticks. In this study, we surveyed ticks associated with dogs which tutors living in the Palmares Environmental Protection Area (EPA Palmares). Dogs were classified into three categories, domiciled, semi-domiciled and wandering dogs according to dog care/ type of dwelling. Ticks were collected monthly from January to December, 2020. Overall, 60 (33.9%) out of 177 examined dogs were infested by ticks. Six species of ticks were identified: Rhipicephalus linnaei, Amblyomma aureolatum, Amblyomma sculptum, Amblyomma ovale, Amblyomma dubitatum and Rhipicephalus microplus. The overall prevalence and presence in semi-domicilied+wandering dogs was higher for A. aureolatum than for R. linnaei by the Chi-square statistic tests. A random sample of 50 ticks, collected from 22 different dogs, were processed through molecular analyses. Ticks were submitted to DNA extraction and also by PCR, using specific primers in order to pathogens monitoring. Four males of A. aureolatum yielded DNA sequences (350 bp) that were 100% identical to the type strain of Rickettsia bellii in GenBank (CP000087).","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e008224"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486457/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394515","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

Isospora similisi recovered from a new host, Saltator aurantiirostris, with supplementary molecular data and notes on its taxonomy and distribution in the Neotropical region. 从新宿主 Saltator aurantiirostris 身上发现的 Isospora similisi，附补充分子数据及其在新热带地区的分类和分布说明。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024060

Carla Maronezi, Carlos Nei Ortúzar-Ferreira, Mariana de Souza Oliveira, Patrícia Barizon Cepeda, Viviane Moreira de Lima, Bruno Pereira Berto

{"title":"Isospora similisi recovered from a new host, Saltator aurantiirostris, with supplementary molecular data and notes on its taxonomy and distribution in the Neotropical region.","authors":"Carla Maronezi, Carlos Nei Ortúzar-Ferreira, Mariana de Souza Oliveira, Patrícia Barizon Cepeda, Viviane Moreira de Lima, Bruno Pereira Berto","doi":"10.1590/S1984-29612024060","DOIUrl":"10.1590/S1984-29612024060","url":null,"abstract":"This article reports on a golden-billed saltator Saltator aurantiirostris Vieillot, 1817, kept in captivity outside its natural distribution area, in the proximities of the Itatiaia National Park, as a new host for Isospora similisi Coelho, Berto, Neves, Oliveira, Flausino & Lopes, 2013. Additionally, a supplementary molecular identification is provided through the sequencing of three non-overlapping loci of mitochondrial DNA and one locus of the 18S small subunit ribosomal RNA (18S) gene. All the taxonomic features of the I. similisi oocysts shed by S. aurantiirostris were equivalent to those originally described from Saltator similis d'Orbigny & Lafresnaye, 1837. The new sequenced loci were identical, or showed 99.9% similarity, to the samples of I. similisi from S. similis and S. aurantiirostris, confirming the same species from both hosts. Lastly, I. similisi is estimated as a junior synonym of Isospora formarum McQuistion & Capparella, 1992, due to the morphological similarities and wide distribution of its hosts in the Neotropical region. Therefore, this study encourages future taxonomic inquiries into I. similisi collected from other Saltator spp. in order to establish this synonymization of I. formarum with I. similisi, and hence, its wide distribution and dispersion in the Neotropical region, including across the Andes mountains.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e011324"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486461/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394513","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

Occurrence of Babesia and Anaplasma in ruminants from the Catimbau National Park, Semiarid Region of Northeast Brazil. 巴西东北部半干旱地区卡廷博国家公园反刍动物中巴贝斯虫和阿纳普拉原虫的出现。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024062.

Liliane Moreira Donato Moura, Ila Ferreira Farias, João Claudio Bezerra de Sá, Dênisson da Silva E Souza, Paula Talita Torres Santos, Carla Roberta Freschi, Jaqueline Bianque de Oliveira, Jonas Moraes-Filho, Rosangela Zacarias Machado, Sergio Santos de Azevedo, Mauricio Claudio Horta

{"title":"Occurrence of Babesia and Anaplasma in ruminants from the Catimbau National Park, Semiarid Region of Northeast Brazil.","authors":"Liliane Moreira Donato Moura, Ila Ferreira Farias, João Claudio Bezerra de Sá, Dênisson da Silva E Souza, Paula Talita Torres Santos, Carla Roberta Freschi, Jaqueline Bianque de Oliveira, Jonas Moraes-Filho, Rosangela Zacarias Machado, Sergio Santos de Azevedo, Mauricio Claudio Horta","doi":"10.1590/S1984-29612024062.","DOIUrl":"10.1590/S1984-29612024062.","url":null,"abstract":"Babesiosis and Anaplasmosis are diseases associated with economic losses; ticks and blood-sucking flies are important zoonotic vectors and reservoirs. This study aimed to investigate the presence of anti-Babesia spp. and anti-Anaplasma marginale antibodies using enzyme-linked immunosorbent assay (ELISA), in ruminants at the Catimbau National Park. Blood samples were collected from 119 sheep, 119 goats, and 47 cattle. Rhipicephalus microplus ticks were collected from cattle. ELISA showed seropositivity of 34% (16/47), 20.3% (24/119), and 16% (19/119) for anti-Babesia bovis; 34% (16/47), 15.2% (18/119), and 9% (7/119) for anti-Babesia bigemina; and 34% (16/47), 35.6% (42/119), and 17% (20/119) for anti-A. marginale antibodies in cattle, goats, and sheep, respectively. The information collected using an epidemiological questionnaire showed that mostly are breed in a semi-intensive system, with access to Caatinga vegetation. The circulation of B. bovis, B. bigemina, and A. marginale was confirmed. Thus, based on the prevalence, this suggests this is an enzootic instability area and is prone to outbreaks.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e005224"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486463/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394514","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 study on the metazoan parasite community of Crenicichla strigata (Cichliformes: Cichlidae). 关于 Crenicichla strigata（慈鲷：慈鲷科）寄生虫群落的首次研究。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024063

Leonardo de Oliveira Mota-Júnior, Paulo Venicius Nascimento Santos, David Sales Sousa Valentim, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias

{"title":"First study on the metazoan parasite community of Crenicichla strigata (Cichliformes: Cichlidae).","authors":"Leonardo de Oliveira Mota-Júnior, Paulo Venicius Nascimento Santos, David Sales Sousa Valentim, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias","doi":"10.1590/S1984-29612024063","DOIUrl":"10.1590/S1984-29612024063","url":null,"abstract":"This study provides the first report of metazoan parasites in Crenicichla strigata. From 31 hosts caught in the Jari River basin, in the eastern Amazon region of Brazil, a total of 1454 parasites were collected: Sciadicleithrum araguariensis, Sciadicleithrum joanae, Sciadicleithrum satanopercae, Posthodiplostomum sp., Genarchella genarchella, Contracaecum sp., Spirocamallanus peraccuratus, Acarina gen. sp. and Dolops geayi. However, the community was dominated by the three species of Sciadicleithrum (Monogenea) and there was similar presence of parasites in the larval and adult stages. The total prevalence was 100% and each of the hosts was parasitized by two or three species, which presented random dispersion. Brillouin diversity, parasite species richness, Berger-Parker dominance index and evenness were low. There was positive correlation between the abundance of Posthodiplostomum sp. the hosts' length, while the abundance of S. peraccuratus showed negative correlation with the body weight of fish. The abundance of S. araguariensis, S. joanae and S. satanopercae showed negative correlation with the hosts' length. The parasite community of C. strigata was characterized by low diversity, low richness, low intensity and low abundance of species.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e012724"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486458/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394512","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

A new myxozoan parasitizing Mesonauta festivus (Cichliformes: Cichlidae) from the lake region in the municipality of Tartarugalzinho, Eastern Amazon, Brazil. 寄生于巴西东亚马孙 Tartarugalzinho 市湖区 Mesonauta festivus（慈鲷：慈鲷科）的一种新的粘虫。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024059

Abthyllane Amaral de Carvalho, Roger Leomar da Silva Ferreira, Lilia Suzane de Oliveira Nascimento, Luize Cristine Pantoja Dos Reis, Kalieli Martins Silva, Luana Silva Bittencourt, Marcela Nunes Videira, Elane Guerreiro Giese

{"title":"A new myxozoan parasitizing Mesonauta festivus (Cichliformes: Cichlidae) from the lake region in the municipality of Tartarugalzinho, Eastern Amazon, Brazil.","authors":"Abthyllane Amaral de Carvalho, Roger Leomar da Silva Ferreira, Lilia Suzane de Oliveira Nascimento, Luize Cristine Pantoja Dos Reis, Kalieli Martins Silva, Luana Silva Bittencourt, Marcela Nunes Videira, Elane Guerreiro Giese","doi":"10.1590/S1984-29612024059","DOIUrl":"10.1590/S1984-29612024059","url":null,"abstract":"The Amazon is the largest river basin in the world and it is home to the greatest diversity of freshwater fish in the world. Mesonauta festivus is a cichlid popularly known as flag cichlid, widely distributed throughout South America. The diversity of parasites in fish from the Amazon region is still underestimated, due to the high fishes diversity. The Myxozoa class has a universal distribution, with some specimens being pathogenic to some fish. The aim of this work was to describe a new species of Hoferellus in M. festivus. The fish were collected in the lake region, municipality of Tartarugalzinho, in the state of Amapá, Brazil. The new species was found parasitizing the urinary bladder of M. festivus. Spores were 11.5 ±1.1 (10.4-12.6) µm long and 10.9 ±1 (9.9-11.9) µm wide, and polar capsules were equally sized, measuring 4.9 ±0.5 (4.4-5.4) µm long and 3.4 ±0.9 (2.5-4.3) µm wide, with a pyriform shape, convergent with the apical region of the spore. The polar filament was wound with 5 to 6 turns. Morphological, morphometric, molecular and phylogenetic analysis proved that it is a new species of Hoferellus in the Amazon region.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e013224"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486460/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394510","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

Unveiling the hidden threat: investigating gastrointestinal parasites and their costly impact on slaughtered livestock. 揭开隐藏威胁的面纱：调查胃肠道寄生虫及其对屠宰牲畜造成的代价高昂的影响。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024061

Hafiz Muhammad Rizwan, Hafiz Muhammad Zohaib, Muhammad Sohail Sajid, Urfa Bin Tahir, Razia Kausar, Nadia Nazish, Mourad Ben Said, Nimra Anwar, Mahvish Maqbool, Dalia Fouad, Farid Shokry Ataya

{"title":"Unveiling the hidden threat: investigating gastrointestinal parasites and their costly impact on slaughtered livestock.","authors":"Hafiz Muhammad Rizwan, Hafiz Muhammad Zohaib, Muhammad Sohail Sajid, Urfa Bin Tahir, Razia Kausar, Nadia Nazish, Mourad Ben Said, Nimra Anwar, Mahvish Maqbool, Dalia Fouad, Farid Shokry Ataya","doi":"10.1590/S1984-29612024061","DOIUrl":"10.1590/S1984-29612024061","url":null,"abstract":"This study investigated the prevalence of gastrointestinal (GI) parasites in ruminants slaughtered at the abattoir in district Narowal, Punjab, Pakistan. The overall prevalence of parasitic infection was determined to be 72.92% based on faecal examination. Among the ruminant species, goats exhibited a significantly higher (P < 0.05) prevalence of parasitic infection (78.63%) compared to cattle, buffalo, and sheep. Additionally, female ruminants showed a significantly higher (P<0.05) prevalence of infection (85.62%) compared to males (65.13%). The intestines (both small and large) of small and large ruminants were found to be significantly more affected, with a prevalence of 39.58% of parasitic infection compared to other examined organs. A total of ten parasitic genera were identified in ruminants, including hydatid cysts. Ruminants with a high burden of parasites (45.74%) significantly outnumbered those with light (23.40%) and moderate (30.85%) burdens. Economically, the estimated annual losses in Pakistan due to organ condemnation with GI parasites were substantial, amounting to Pak. Rs. 405.09/- million (USD = 1,428,760). These findings underscore the significance of GI parasite infections as a major animal health concern and a cause of significant economic losses in the research area.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 3","pages":"e007224"},"PeriodicalIF":1.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486462/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394516","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

Diversity of helminths parasitizing Phalacrocorax brasilianus (Gmelin, 1789) in the Brazilian Amazon. 寄生于巴西亚马逊河鳄鱼（Phalacrocorax brasilianus）（Gmelin，1789 年）的蠕虫的多样性。

IF 1.3 4区农林科学

Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-09-23 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024057

Elaine Lopes de Carvalho, Ricardo Luis Sousa Santana, Tiago Paixão Mangas, Elane Guerreiro Giese

{"title":"Diversity of helminths parasitizing Phalacrocorax brasilianus (Gmelin, 1789) in the Brazilian Amazon.","authors":"Elaine Lopes de Carvalho, Ricardo Luis Sousa Santana, Tiago Paixão Mangas, Elane Guerreiro Giese","doi":"10.1590/S1984-29612024057","DOIUrl":"10.1590/S1984-29612024057","url":null,"abstract":"This study was carried out in northern Brazil to determine the prevalence of helminth parasites that infect Phalacrocorax brasilianus (Gmelin, 1789). Between July 2020 and July 2023, adult and larvae parasites were collected from the respiratory and gastrointestinal tract of 30 birds that died in fishing nets and in fishing corral in the municipality of Soure on Marajó Island. The identified parasites included the nematodes Contracaecum sp., Contracaecum australe, Contracaecum rudolphii sensu lato, Contracaecum microcephalum, Contracaecum multipapillatum, Syncuaria squamata, Desportesius invaginatus, Tetrameres sp., Aplectana sp., Cyathostoma sp., Eucoleus contortus, Baruscapillaria spiculata, Baruscapillaria appendiculata; the trematodes Drepanocephalus spathans, Austrodiplostomum mordax, Austrodiplostomum compactum, Hysteromorpha triloba; the cestodes Paradilepis caballeroi; and the acanthocephalans Andracantha sp., Southwellina hispida and Southwellina macracanthus. The whole prevalence was 96.66% (29/30) and the most frequent helminths were nematodes (96.66%; 29/30), followed by acanthocephalans (66.66%; 20/30). These data increase the knowledge about helminths in cormorants widely distributed to Marajó Island.","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 4","pages":"e011824"},"PeriodicalIF":1.3,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11452101/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142330597","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