{"title":"Optimization and workflow of in vitro culture of adult Fasciola hepatica.","authors":"Cesar Burga-Cisterna, Edith Málaga, Enrique Serrano-Martínez, Giovana Livia-Córdova, Ramón Antezana, Américo Castro Luna, Monica Pajuelo","doi":"10.1590/S1984-29612024064","DOIUrl":"10.1590/S1984-29612024064","url":null,"abstract":"<p><p>The aim of this study was to evaluate different transportation and incubation conditions to test the viability of adult Fasciola hepatica in order to propose a new cultivation workflow. The adult stage of F. hepatica was obtained from naturally infected cattle at a local slaughterhouse in Lima, Peru. Different transport and incubation conditions of F. hepatica were tested, evaluating its viability through a motility scale. DMEM and RPMI 1640 media presented better transport conditions compared to Hedon-Fleig and PBS media (p < 0.001), maintaining the flukes at 37°C. Also, DMEM and RPMI-1640 media presented better incubation conditions compared to Hedon-fleig (p < 0.001). A minimum of 3 ml of medium per fluke was required to maintain best viability (p < 0.001) and no differences in viability were found between the different types of culture plates (p > 0.05). In addition, we found that incubation with DMSO (dimethyl sulfoxide) at concentrations greater than 0.5% v/v for 48 hours generates toxicity (p < 0.001). In conclusion, RPMI 1640 and DMEN media presented better transport and in vitro cultivation conditions for F. hepatica, using DMSO at concentrations lower than 0.5% v/v.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 4","pages":"e014524"},"PeriodicalIF":1.3,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741093","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}
José Vicente Ferreira Neto, Marcelo Cutrim Moreira de Castro, Alexandre Levi Monteiro Santana, Gabriel Moreira Valença, André de Abreu Rangel Aguirre, Ahana Maitra, Felipe Arley Costa Pessoa
{"title":"First record of Haematopinus tuberculatus (Burmeister, 1839) (Psocodea: Anoplura: Haematopinidae) parasitizing buffalo (Bubalus bubalis) in the state of Amazonas, Brazil.","authors":"José Vicente Ferreira Neto, Marcelo Cutrim Moreira de Castro, Alexandre Levi Monteiro Santana, Gabriel Moreira Valença, André de Abreu Rangel Aguirre, Ahana Maitra, Felipe Arley Costa Pessoa","doi":"10.1590/S1984-29612024070","DOIUrl":"10.1590/S1984-29612024070","url":null,"abstract":"<p><p>Lice are obligate ectoparasites of birds and mammals with specialized mouthparts adapted to feed on the blood or other body tissues of their respective hosts. The registry of parasites that can cause economic and health impacts on the buffalo herd of the country is of utmost importance. In the present study, we report the first record of Haematopinus tuberculatus parasitizing buffalo in the municipality of Autazes, Amazonas, Brazil. The study was conducted in a rural private area located on the banks of the Paraná Madeirinha River. Twelve specimens were collected and identified as H. tuberculatus, comprising five females, six males, and one third instar nymph. The lice were observed on females buffalo during milking; however, the greatest abundance was found on calves, in the neck, back, and loin regions. There was no visible DNA amplification on agarose gel for the samples tested. However, the record of this louse species parasitizing on buffaloes in the region highlights the potential for epizootic outbreaks to occur in the area.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 4","pages":"e013824"},"PeriodicalIF":1.3,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614085/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741086","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}
Fabiano Paschoal, Jorge Luiz Silva Nunes, Anderson Dias Cezar, Felipe Bisaggio Pereira, Jose Luis Luque
{"title":"The metazoan parasite community of the barred grunt Conodon nobilis (Actinopterygii: Haemulidae) from the coast off Rio de Janeiro, southeastern Brazil.","authors":"Fabiano Paschoal, Jorge Luiz Silva Nunes, Anderson Dias Cezar, Felipe Bisaggio Pereira, Jose Luis Luque","doi":"10.1590/S1984-29612024068","DOIUrl":"10.1590/S1984-29612024068","url":null,"abstract":"<p><p>The barred grunt, Conodon nobilis (Linnaeus, 1758), is one of the most important marine-estuarine fish along the Brazilian coast. The present study evaluated the parasite fauna of this haemulid fish along the Southern Atlantic coast. From September 2010 to July 2011, a total of 100 specimens of C. nobilis from Angra dos Reis, Rio de Janeiro State, Brazil (23°01'21\"S, 44°19'13\"W), were examined. Ninety-seven individuals were parasitized by at least one species of metazoan, with a mean of 4.50 ± 3.54 parasites per fish. Eighteen species of parasites were collected: eight copepods, four digeneans, two cestodes, one acanthocephalan, one aspidogastrean, one isopod and one monogenean. The copepod Lernanthropus rathbuni was the most abundant and dominant species, accounting for 17.77% of all parasite specimens collected. Caligus haemulonis was the most prevalent. Prevalence and abundance of Acantholochus lamellatus and L. rathbuni tended to be higher in smaller fish, whereas those of Torticaecum sp. were higher in larger fish. The mean abundance of C. haemulonis was significantly higher in male hosts. A negative association was observed between two species of ectoparasites. The parasite community of C. nobilis was characterized by dominance of copepods, which can be related to host's schooling behavior.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 4","pages":"e010724"},"PeriodicalIF":1.3,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614089/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741107","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}
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":"<p><p>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.</p>","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}
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":"<p><p>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.</p>","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}
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":"<p><p>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.</p>","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}
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":"<p><p>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).</p>","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}
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":"<p><p>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.</p>","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}
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":"<p><p>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.</p>","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}
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":"<p><p>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.</p>","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}