Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria最新文献_第8页

First report of Sarcoptes scabiei parasitism (Sarcoptiformes: Sarcoptidae) in Lycalopes sechurae (Mammalia: Carnivora). 本文首次报道疥螨寄生于石芋（哺乳目：食肉目）。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-07-15 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022036

Ricardo Villalba-Briones, Eliana Belen Molineros, Juan Salvador Monrós

{"title":"First report of Sarcoptes scabiei parasitism (Sarcoptiformes: Sarcoptidae) in Lycalopes sechurae (Mammalia: Carnivora).","authors":"Ricardo Villalba-Briones, Eliana Belen Molineros, Juan Salvador Monrós","doi":"10.1590/S1984-29612022036","DOIUrl":"10.1590/S1984-29612022036","url":null,"abstract":"We present the first report of parasitism by Sarcoptes scabiei (Linnaeus, 1758), in a sechuran fox \"Lycalopex sechurae\". Sarcoptes scabiei is a mite that produces sarcoptic mange, which can lead to the death of the animal host and can cause epidemic episodes in wildlife communities. The sechuran fox was collected by the environmental police from a citizen who reported the animal. It was sent to a veterinarian specializing in wildlife, \"Clinica Mansion Mascota\", in Guayaquil, Ecuador. Immediate physical examination showed crusts on its skin, and samples of skin and blood were collected and analyzed. The skin samples were analyzed using a microscope at 40x magnification in the clinic. In addition, skin and blood samples were sent to a private laboratory for further analyses. Both analyses were positive for S. scabiei infection. It is the second report of S. scabiei in a new wildlife species in the Guayas province of Ecuador within less than a year. These events cause concern due the possibility of biological community transmission. Since domestic and feral animals are considered habitual spreaders of this disease, management through ethical procedures such as adoption, medical treatment and neutering campaigns, and awareness-raising projects with empathetic approach are recommended.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":" ","pages":"e005022"},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136369/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40523259","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

The diversity of Eimeria spp. in cattle in the Brazilian Semiarid region. 巴西半干旱区牛中艾美耳球虫属的多样性。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-07-11 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022037

Lídio Ricardo Bezerra Melo, Luana Carneiro Sousa, Brendo Andrade Lima, Ana Luzia Peixoto Silva, Estefany Ferreira Lima, Larissa Claudino Ferreira, Thais Ferreira Feitosa, Vinícius Longo Ribeiro Vilela

{"title":"The diversity of Eimeria spp. in cattle in the Brazilian Semiarid region.","authors":"Lídio Ricardo Bezerra Melo, Luana Carneiro Sousa, Brendo Andrade Lima, Ana Luzia Peixoto Silva, Estefany Ferreira Lima, Larissa Claudino Ferreira, Thais Ferreira Feitosa, Vinícius Longo Ribeiro Vilela","doi":"10.1590/S1984-29612022037","DOIUrl":"10.1590/S1984-29612022037","url":null,"abstract":"The aim of the present study was to find out the diversity of Eimeria species in cattle herds in the semiarid region of Brazil. Forty cattle fecal samples were collected from 20 farms in the Paraíba State, Northeast Brazil, and examined by centrifugation-floatation technique in sucrose solution. From each positive animal, 20 oocysts were photographed and measured. Infection by Eimeria spp. was detected in 17.12% (137/800) of the samples analyzed. All the farms had at least one animal that was positive for Eimeria spp. (100%; 20/20). In total, 2740 coccidia were photographed and measured. The species detected were: Eimeria bovis (35.1%); Eimeria canadensis (17.48%); Eimeria auburnensis (14.7%); Eimeria ellipsoidalis (9.7%); Eimeria zuernii (7.22%); Eimeria brasiliensis (4.56%); Eimeria bukidnonensis (3.97%); Eimeria illinoisensis (2.91%); Eimeria wyomingensis (1.42%); Eimeria alabamensis (1.27%); Eimeria cylindrica (0.76%); Eimeria pellita (0.54%); Eimeria ildefonsoi (0.21%); and Eimeria subspherica (0.07%). It was concluded that cattle in the semiarid region of Brazil were parasitized by 14 species of Eimeria. It is thinked that the sanitary management employed, as well as the system used for raising these animals, is the crucial point that leads to high rates of infection in this region.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":" ","pages":"e006422"},"PeriodicalIF":0.0,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136371/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40501823","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

The outcomes of polyparasitism in stray cats from Brazilian Midwest assessed by epidemiological, hematological and pathological data. 通过流行病学、血液学和病理学资料评估巴西中西部流浪猫多寄生的结果。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-07-04 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022033

Alanderson Rodrigues da Silva, Gisele Braziliano Andrade, Joyce Katiuccia Medeiros Ramos Carvalho, Wanessa Teixeira Gomes Barreto, Filipe Martins Santos, Keyla Carstens Marques de Sousa, Marcos Rogério André, Luiz Claudio Ferreira, Rodrigo Caldas Menezes, Heitor Miraglia Herrera

{"title":"The outcomes of polyparasitism in stray cats from Brazilian Midwest assessed by epidemiological, hematological and pathological data.","authors":"Alanderson Rodrigues da Silva, Gisele Braziliano Andrade, Joyce Katiuccia Medeiros Ramos Carvalho, Wanessa Teixeira Gomes Barreto, Filipe Martins Santos, Keyla Carstens Marques de Sousa, Marcos Rogério André, Luiz Claudio Ferreira, Rodrigo Caldas Menezes, Heitor Miraglia Herrera","doi":"10.1590/S1984-29612022033","DOIUrl":"10.1590/S1984-29612022033","url":null,"abstract":"We evaluated the epidemiological, hematological, and pathological data of Leishmania spp., Toxoplasma gondii, Platynosomum illiciens, feline immunodeficiency virus (FIV), and feline leukemia virus (FeLV) infections and the coinfections in stray cats of an endemic area for leishmaniasis. The diagnosis was performed by serological tests and necropsy. We described gross lesions and histopathological findings. We used immunohistochemistry and chromogenic in situ hybridization for L. infantum detection. We found infection in 27 out of 50 sampled cats, among them, 14 presented coinfections. A strong correlation between splenomegaly and lymphadenomegaly with FeLV, and an association between hepatic lesions and cachexia with parasitism due to P. illiciens were observed. Moreover, we found a significant increase in the monocyte count in the FeLV-infected and a decrease in the red blood cell count in the FIV-infected animals. Amastigote forms of Leishmania spp. and tissue changes were detected in lymphoid organs of an animal coinfected with P. illiciens, T. gondii, and FIV. Polyparasitism recorded in stray cats of the Brazilian Midwest should be considered in effective control strategies for public health diseases. Moreover, stray cats of Campo Grande may be a source of infection of FIV, FeLV and P. illiciens for populations of domiciled cats.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":" ","pages":"e004222"},"PeriodicalIF":0.0,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136384/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40485373","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

Identification of Pentatrichomonas hominis in preputial washes of bulls in Brazil. 巴西公牛包皮洗涤中人五毛单胞菌的鉴定。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-07-04 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022034

Otávia Reis E Silva, Laura Ribeiro, Vera Lucia Teixeira de Jesus, Douglas McIntosh, Lara Nogueira Silenciato, Joaquim Esquerdo Ferreira, Marco Roberto Bourg de Mello

{"title":"Identification of Pentatrichomonas hominis in preputial washes of bulls in Brazil.","authors":"Otávia Reis E Silva, Laura Ribeiro, Vera Lucia Teixeira de Jesus, Douglas McIntosh, Lara Nogueira Silenciato, Joaquim Esquerdo Ferreira, Marco Roberto Bourg de Mello","doi":"10.1590/S1984-29612022034","DOIUrl":"10.1590/S1984-29612022034","url":null,"abstract":"The parabasalid Pentatrichomonas hominis is generally considered to represent a symbiotic component of the gastrointestinal microbiota in a wide variety of vertebrate hosts including humans. Nevertheless, a limited number of studies have raised the possibility that it may act as a pathogen of humans, dogs, and pigs and that some human infections may have a zoonotic origin. Data from North America revealed an association between P. hominis and the bovine urogenital tract, principally in bulls and rarely in cows. The importance of this observation is linked to possible interference in the accurate diagnosis of the economically important venereal pathogen Tritrichomonas foetus. The current study employed culture-based and molecular methods to examine the preputial cavities of four breeding bulls, raised in open pasture in southeastern Brazil, for the presence of trichomonads. Motile protozoa were isolated from three of the bulls and were definitively identified as P. hominis based on nucleotide sequencing of polymerase chain reaction (PCR) amplicons derived from the ribosomal RNA operon (ITS1-5.8S rDNA-ITS2) of the parasite. The potential implications of these findings for bovine and human health 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":" ","pages":"e005322"},"PeriodicalIF":0.0,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136376/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40485374","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

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 : 2022-06-06 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022031

Leodil da Costa Freitas, Arnaldo Maldonado Júnior, Ravena Fernanda Braga de Mendonça, Dirceu Guilherme de Souza Ramos, Rogério Vieira Rossi, Richard de Campos Pacheco, Rosana Gentile

{"title":"Helminth community structure of Didelphis marsupialis (Didelphimorphia, Didelphidae) in a transition area between the Brazilian Amazon and the Cerrado.","authors":"Leodil da Costa Freitas, Arnaldo Maldonado Júnior, Ravena Fernanda Braga de Mendonça, Dirceu Guilherme de Souza Ramos, Rogério Vieira Rossi, Richard de Campos Pacheco, Rosana Gentile","doi":"10.1590/S1984-29612022031","DOIUrl":"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":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136385/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81484271","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

Larval cestodes infecting commercial fish of Alexandria coast along the Mediterranean Sea: morphology and phylogeny. 侵染地中海亚历山德里亚沿岸商品鱼的幼虫：形态和系统发育。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-06-06 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022030

Kareem Morsy, Saad Bin Dajem, Mohammed Al-Kahtani, Attalla El-Kott, Essam Ibrahim, Hamida Hamdi, Amin Al-Doaiss, Mohamed Abumandour, Haitham El-Mekkawy, Diaa Massoud, Asmaa Adel, Shams Abd El-Kareem

{"title":"Larval cestodes infecting commercial fish of Alexandria coast along the Mediterranean Sea: morphology and phylogeny.","authors":"Kareem Morsy, Saad Bin Dajem, Mohammed Al-Kahtani, Attalla El-Kott, Essam Ibrahim, Hamida Hamdi, Amin Al-Doaiss, Mohamed Abumandour, Haitham El-Mekkawy, Diaa Massoud, Asmaa Adel, Shams Abd El-Kareem","doi":"10.1590/S1984-29612022030","DOIUrl":"10.1590/S1984-29612022030","url":null,"abstract":"Members of the order Trypanorhyncha are cestode parasites that are frequently found infecting the muscles of several marine fish species, affecting fish health and resulting in consumers' rejection. Seventy-five specimens of marine fish were freshly caught from boat landing sites at the Alexandria coast along the Mediterranean Sea in Egypt, including two Carangids, the greater amberjack Seriola dumerili and the gulley jack Pseudocarans dentex; two Serranids, the Haifa grouper Epinephelus haifensis and the mottled grouper Mycteroperca rubra. Forty-five fish were infected; the infection was recorded as blastocysts embedded in fish flesh. Blastocysts were isolated and ruptured; the generated plerocerci were described morphologically, where, four different species were recovered; Callitetrarhynchus gracilis, Callitetrarhynchus speciosus, Protogrillotia zerbiae, and Grillotia brayi. The taxonomic position of these parasites was justified by multiple-sequence alignment and a phylogenetic tree was constructed following maximum likelihood analysis of the 18s rRNA sequences of the recovered worms. The accession numbers MN625168, MN625169, MN611431and MN611432 were respectively assigned to the recovered parasites. The results obtained from the molecular analyses confirmed the morphological records of the recovered parasites. Since metacestodes are found in the musculature of infected fish specimens, it is necessary to remove these areas in the commercialization of fish.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"67 6 1","pages":"e003022"},"PeriodicalIF":0.0,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136381/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89895514","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

Raillietia auris (Mesostigmata: Raillietiidae) in cattle in the state of Mato Grosso do Sul, Brazil. 巴西南马托格罗索州牛身上的牛齿纹病（中刺目：牛齿纹病科）。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-06-06 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022032

Fernanda Paula Veloso, Fernando de Souza Rodrigues, Renata Cunha Madureira, Eliane Mattos Piranda, Luiz Eduardo Roland Tavares, Fernando Paiva

{"title":"Raillietia auris (Mesostigmata: Raillietiidae) in cattle in the state of Mato Grosso do Sul, Brazil.","authors":"Fernanda Paula Veloso, Fernando de Souza Rodrigues, Renata Cunha Madureira, Eliane Mattos Piranda, Luiz Eduardo Roland Tavares, Fernando Paiva","doi":"10.1590/S1984-29612022032","DOIUrl":"10.1590/S1984-29612022032","url":null,"abstract":"Parasitic otitis in cattle, caused by mites, has been reported from several continents. The present study aimed to determine the distribution, prevalence, intensity, mean intensity, and range of the agent in cattle in the state of Mato Grosso do Sul, Brazil. The samples were designed at random, with an acceptable margin of error of 3% and a confidence interval of 99%. A total of 449 animals were sampled immediately after slaughter from 34 different municipalities in the state using the technique of flushing both ear canals. Only Raillietia auris (Leidy, 1872) were found, with a prevalence of 98.6%, mean intensity of 53.78 mites/animal, and a range of 1-323. Impressively, the prevalence found was identical to another survey carried out 39 years ago in the same region. Details about the parasite intensity in different age categories of the animals are presented. The study demonstrates that the prevalence and intensity of infestation by Raillietia auris are high, and in older cattle are higher than young ones.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"65 1","pages":"e003122"},"PeriodicalIF":0.0,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136373/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78642104","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

Endoparasite diversity and liver alterations in Hoplerythrinus unitaeniatus and Cichlasoma bimaculatum in a quilombola area in Maranhão, Brazil. 巴西maranh<e:1>地区单一蚤和双斑马鱼体内寄生虫多样性及肝脏变化。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-04-20 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022022

Ladilson Rodrigues Silva, Vitorya Mendes da Silva Monteiro, Izabela Alves Paiva, Juliany Silva Mendes, Greiciene Dos Santos de Jesus, Marcelo Victor Rodrigues da Silva, Danilo Cutrim Bezerra, Carlos Riedel Porto Carreiro, Larissa Sarmento Dos Santos Ribeiro, Viviane Correa Silva Coimbra, Nancyleni Pinto Chaves Bezerra

{"title":"Endoparasite diversity and liver alterations in Hoplerythrinus unitaeniatus and Cichlasoma bimaculatum in a quilombola area in Maranhão, Brazil.","authors":"Ladilson Rodrigues Silva, Vitorya Mendes da Silva Monteiro, Izabela Alves Paiva, Juliany Silva Mendes, Greiciene Dos Santos de Jesus, Marcelo Victor Rodrigues da Silva, Danilo Cutrim Bezerra, Carlos Riedel Porto Carreiro, Larissa Sarmento Dos Santos Ribeiro, Viviane Correa Silva Coimbra, Nancyleni Pinto Chaves Bezerra","doi":"10.1590/S1984-29612022022","DOIUrl":"10.1590/S1984-29612022022","url":null,"abstract":"Our aim was to assess endoparasite diversity and liver alterations in Hoplerythrinus unitaeniatus (jeju) and Cichlasoma bimaculatum (acará preto) in a quilombola area in Maranhão, Brazil. For this, 21 H. unitaeniatus and 21 C. bimaculatum were caught in a natural environment and transported to a laboratory. After these had been euthanized, endoparasites were collected and identified. Liver alterations were evaluated histological analysis based on the severity of each lesion: stage I, organ functioning not compromised; stage II, more severe lesions that impair normal functioning of the organs; and stage III, very severe and irreversible lesions. Among the fish evaluated, 71.43% H. unitaeniatus and 61.90% C. bimaculatum were parasitized. Contracaecum sp. was found in both species; while acanthocephalans, only in H. unitaeniatus. The alterations were vacuolization, nucleus in the cell periphery, deformation of the cell outline, melanomacrophage center, hyperemia, cytoplasmic degeneration and nuclear vacuolization. Through calculating a histological alteration index, it was found that 26.19% of the specimens presented lesions in stage I; 38.09% lesions in stage II and 9.52% lesions in stage III. It was concluded that there is high prevalence of Contracaecum sp. and that the liver lesions may be adaptive responses by the fish to endoparasitic infection.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"32 1","pages":"e000922"},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136375/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87952613","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

Metazoan endoparasites of Acestrorhynchus lacustris (Actinopterygii: Acestrorhynchidae) from lagoons bordering the upper and middle São Francisco river basin, Brazil. 巴西<s:1>奥弗朗西斯科河流域中上游环礁湖尾藻内寄生虫(放线翼目:尾藻科)

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-04-20 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022023

Rayane Duarte, Michelle Daniele Dos Santos-Clapp, Marilia de Carvalho Brasil-Sato

{"title":"Metazoan endoparasites of Acestrorhynchus lacustris (Actinopterygii: Acestrorhynchidae) from lagoons bordering the upper and middle São Francisco river basin, Brazil.","authors":"Rayane Duarte, Michelle Daniele Dos Santos-Clapp, Marilia de Carvalho Brasil-Sato","doi":"10.1590/S1984-29612022023","DOIUrl":"10.1590/S1984-29612022023","url":null,"abstract":"The endoparasitic fauna of Acestrorhynchus lacustris from eight marginal lagoons of the upper and middle São Francisco river basin, Brazil, is recorded here for the first time. For this, a total of 106 specimens of A. lacustris were collected. Eighteen helminth species were found. The taxa recorded were phylum Platyhelminthes: one metacercaria of Clinostomum sp. (Trematoda: Clinostomidae) and plerocercoid larvae of unidentified species (Eucestoda: Proteocephalidae gen. sp.); phylum Acanthocephala: juvenile of Quadrigyrus sp.; and phylum Nematoda: larvae of Brevimulticaecum sp., Contracaecum sp. Type1, Contracaecum sp. Type2, Hysterothylacium sp., Gnathostoma sp., Spiroxys sp., juvenile and adult specimens of Freitascapillaria sp., Paracapillaria piscicola, Capillariidae gen. sp., Procamallanus (Spirocamallanus) hilarii, Procamallanus (S.) inopinatus, Procamallanus (S.) saofranciscencis, Travassosnema travassosi paranaensis, Cystidicoloides fischeri and Spinitectus rodolphiheringi. Proteocephalidae gen. sp., Contracaecum sp. Type1 and Travassosnema t. paranaensis were present in all eight lagoons with high parasitic indexes. Proteocephalidae gen. sp., Brevimulticaecum sp., Gnathostoma sp., Freitascapillaria sp., P. piscicola, Capillariidae gen. sp., Procamallanus (S.) hilarii, C. fischeri and S. rodolphiheringi are new records for A. lacustris. The known geographical distribution of Gnathostoma sp., Freitascapillaria sp., P. piscicola, Capillariidae gen. sp., Procamallanus (S.) hilarii and Travassosnema t. paranaensis has now been extended to the São Francisco river basin.","PeriodicalId":21270,"journal":{"name":"Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria","volume":"47 1","pages":"e000422"},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12136380/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84703596","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

Immunophenotypical and pathological changes in dogs experimentally infected with Ehrlichia canis. 实验性感染犬艾氏原虫的狗的免疫表型和病理变化。

Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria Pub Date : 2022-04-08 eCollection Date: 2022-01-01 DOI: 10.1590/S1984-29612022020

Márcio Botelho de Castro, Matias Pablo Juan Szabó, Lucia Padilha Cury Thomaz de Aquino, Ana Silvia Dagnoni, Antonio Carlos Alessi, Mirela Tinucci Costa, Andréa Cristina Higa Nakaghi, Mariele De Santi, Ana Claúdia Calchi, Marcos Rogério André, Rosangela Zacarias Machado

{"title":"Immunophenotypical and pathological changes in dogs experimentally infected with Ehrlichia canis.","authors":"Márcio Botelho de Castro, Matias Pablo Juan Szabó, Lucia Padilha Cury Thomaz de Aquino, Ana Silvia Dagnoni, Antonio Carlos Alessi, Mirela Tinucci Costa, Andréa Cristina Higa Nakaghi, Mariele De Santi, Ana Claúdia Calchi, Marcos Rogério André, Rosangela Zacarias Machado","doi":"10.1590/S1984-29612022020","DOIUrl":"10.1590/S1984-29612022020","url":null,"abstract":"Canine monocytic ehrlichiosis (CME) is one of the most important tick-borne diseases worldwide, with multisystemic presentations. Immune dysregulation has been proposed as the primary mechanism involved in its pathogenesis and in tissue injury in dogs with CME. Experimental infection of German Shepherd dogs in the present study demonstrated that CME caused marked pathological changes in their lymph nodes and spleen, and also gave rise to mononuclear infiltration in organs and tissues. Immunophenotyping of cells in lymph nodes, spleen and injured tissues highlighted differences in lymphocyte subsets, local expression of immunoglobulin subclasses and MHCII molecules between infected and control dogs. These findings suggest that the immunophenotypic and immunopathological changes in dogs with acute experimental CME are related to Th1 bias and compartmentalized immune response.","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":"e021621"},"PeriodicalIF":0.0,"publicationDate":"2022-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901872/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9077402","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