Revista Brasileira De Parasitologia Veterinaria最新文献

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Discrimination of cryptic species: Tabanus triangulum and Tabanus occidentalis (Diptera: Tabanidae) differ in size and shape. 隐蔽物种的鉴别:Tabanus triangulum 和 Tabanus occidentalis(双翅目:Tabanidae)在体型和形状上存在差异。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-06-17 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024028
Gratchela Dutra Rodrigues, Boaventura Lobo Centeno Filho, Diuliani Fonseca Morales, Rafaela de Freitas Rodrigues Mengue Dimer, Caroline da Silva Cavalheiro, Tiago Kütter Krolow, Mauricio Osvaldo Moura, Rodrigo Ferreira Krüger
{"title":"Discrimination of cryptic species: Tabanus triangulum and Tabanus occidentalis (Diptera: Tabanidae) differ in size and shape.","authors":"Gratchela Dutra Rodrigues, Boaventura Lobo Centeno Filho, Diuliani Fonseca Morales, Rafaela de Freitas Rodrigues Mengue Dimer, Caroline da Silva Cavalheiro, Tiago Kütter Krolow, Mauricio Osvaldo Moura, Rodrigo Ferreira Krüger","doi":"10.1590/S1984-29612024028","DOIUrl":"10.1590/S1984-29612024028","url":null,"abstract":"<p><p>Horse fly females (Diptera, Tabanidae) are hematophagous and can vector pathogens that affect livestock. Complexes of cryptic species are common in Tabanidae, as exemplified by some species of Tabanus, including Tabanus triangulum and Tabanus occidentalis, both prevalent in the Southern region of Brazil. In this study, geometric morphometrics were employed to ascertain the wing venation in species identification. It was demonstrated that this tool effectively differentiates T. triangulum from T. occidentalis in the coastal plain of Rio Grande do Sul state, situated within the Pampa biome. The results indicate that T. triangulum and T. occidentalis occupy distinct regions of the morphological space, allowing their precise identification through geometric morphometrics, which is fast, affordable, and easy to implement.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e020123"},"PeriodicalIF":1.3,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11253824/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428053","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
Evaluation of heating and liming treatments in sand samples artificially contaminated with Ancylostoma spp. eggs. 对人工污染了 Ancylostoma spp.
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-06-17 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024032
Isabella Braghin Ferreira, Isabele Santos Garcia, Maria Linda Ferreira Lima, Rodrigo Costa da Silva, Vamilton Alvares Santarém
{"title":"Evaluation of heating and liming treatments in sand samples artificially contaminated with Ancylostoma spp. eggs.","authors":"Isabella Braghin Ferreira, Isabele Santos Garcia, Maria Linda Ferreira Lima, Rodrigo Costa da Silva, Vamilton Alvares Santarém","doi":"10.1590/S1984-29612024032","DOIUrl":"10.1590/S1984-29612024032","url":null,"abstract":"<p><p>Ancylostoma spp. are found worldwide. Infected dog and cat feces can contaminate soil in public places. Despite prophylactic measures being available, studies on direct remediation of Ancylostoma-contaminated soils are scarce. This study aimed to determine the impact of heat treatment and liming on the viability of Ancylostoma spp. eggs in artificially contaminated sandy soil. Sterilized sand samples were contaminated with Ancylostoma spp. eggs extracted from infected dogs' feces. Samples were heated (trial I) to 70 °C or 80 °C, then sieved after 24 hours (212, 90, 38, and 25 µm). Larval cultures were assessed for larval development following heat treatment. Five quicklime concentrations (trial II; 50, 30, 20, 10 and 5%) were used to treat sand. The effect of liming on larval cultures was assessed by measuring embryonic development. Filariform larvae were exposed to 20% quicklime (25 °C and 37 °C, 20 min). Heat treatment destroys Ancylostoma spp. eggs and prevents in vitro larval development. Liming at 50, 30, and 20% concentrations made embryonic development impossible. However, filariform larvae treated with 20% lime solution retained their motility. Heating at 70 °C and liming at 20% were sufficient to make Ancylostoma spp. egg embryogenesis impossible in experimentally contaminated sand samples.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e002124"},"PeriodicalIF":1.3,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11253820/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428054","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
Evaluation of the efficacy of entomopathogenic nematodes on Ctenocephalides felis felis larvae (Siphonaptera: Pulicidae). 评估昆虫病原线虫对栉水母幼虫(虹彩目:栉水母科)的药效。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-06-17 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024027
Ana Caroline Ferreira de Souza, Danielle Pereira da Silva, Américo de Castro Monteiro Sobrinho, Vânia Rita Elias Pinheiro Bittencourt, Avelino José Bittencourt, Thaís Ribeiro Correia, Melissa Carvalho Machado do Couto Chambarelli
{"title":"Evaluation of the efficacy of entomopathogenic nematodes on Ctenocephalides felis felis larvae (Siphonaptera: Pulicidae).","authors":"Ana Caroline Ferreira de Souza, Danielle Pereira da Silva, Américo de Castro Monteiro Sobrinho, Vânia Rita Elias Pinheiro Bittencourt, Avelino José Bittencourt, Thaís Ribeiro Correia, Melissa Carvalho Machado do Couto Chambarelli","doi":"10.1590/S1984-29612024027","DOIUrl":"10.1590/S1984-29612024027","url":null,"abstract":"<p><p>Ctenocephalides felis felis is a relevant and widely distributed ectoparasite that acts as a vector of disease-causing pathogens. Moreover, it is responsible for economic losses due the use of harmful chemicals to the environment and that favor the emergence of insecticide-resistant populations. Research on entomopathogenic nematodes may open up an alternative route to the insect chemical control. The present study aimed to evaluate the killing efficacy of Heterorhabditis bacteriophora (HP88) against C. felis larvae in 400 μL, 600 μL and 1000 μL of suspension containing 120, 160 and 200 infective juveniles/larva and 600 μL of suspension containing the same concentrations of Heterorhabditis indica (LPP30), divided into two groups (absence and presence of diet) and a control group with three replications containing only distilled water. In the bioassay with H. bacteriophora, the groups in 600 μL of suspension showed higher mortality rates than those in the other tested volumes, which were above 80% at all concentrations. On the other hand, H. indica achieved mortality rates above 70% at all concentrations used. Results indicate that flea larvae are susceptible to in vitro infection by H. bacteriophora and H. indica.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e019723"},"PeriodicalIF":1.3,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11253821/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428065","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
Parasites of Astyanax lacustris (Pisces, Characiformes) from Brazilian streams. 巴西溪流中 Astyanax lacustris(双鱼类,鳍形目)的寄生虫。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-06-17 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024025
Bianca da Silva Miguel, Igor Paiva Ramos, Aline Cristina Zago, Rosilene Luciana Delariva, Lidiane Franceschini
{"title":"Parasites of Astyanax lacustris (Pisces, Characiformes) from Brazilian streams.","authors":"Bianca da Silva Miguel, Igor Paiva Ramos, Aline Cristina Zago, Rosilene Luciana Delariva, Lidiane Franceschini","doi":"10.1590/S1984-29612024025","DOIUrl":"10.1590/S1984-29612024025","url":null,"abstract":"<p><p>Astyanax lacustris is a small characid fish widely distributed in Brazil, with fast-growing and omnivorous feeding habits. Although the species presents economic and ecological importance, little is known about its parasitological fauna in stream environments. This study aimed to characterize the parasitic fauna of A. lacustris in two streams in the state of Paraná, Brazil. Fifty-two specimens of A. lacustris were collected, 22 from the Carolina stream (Lower Iguaçu River) and 30 from the Carreira stream (Upper Paraná River), in July and September 2018. In both streams, there was a low richness of parasites, and the structure of the parasitic community was predominantly composed of monogeneans. These findings may be associated with the gregarious behavior of the host species. Moreover, the low occurrence of endohelminths, may be associated with the fact that in streams, the energy flow is low, and depends directly on the input of allochthonous matter, which favors the formation of shelters for the establishment of macroinvertebrates, which represent important sources of food for the ichthyofauna, and may act as intermediate and paratenic hosts of parasites. These environments require further studies to support conservation measures aimed at maintaining the balance of ecological relationships in these preserved ecosystems.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e000124"},"PeriodicalIF":1.3,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11253818/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428066","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
Centrorhynchus spp. (Acanthocephala) in South America: new anuran record and checklist of vertebrate hosts. 南美洲的 Centrorhynchus spp.(Acanthocephala):新的无脊椎动物记录和脊椎动物宿主清单。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-05-31 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024024
Róger Jean Oliveira, Carolina Silveira Mascarenhas, Gertrud Müller
{"title":"Centrorhynchus spp. (Acanthocephala) in South America: new anuran record and checklist of vertebrate hosts.","authors":"Róger Jean Oliveira, Carolina Silveira Mascarenhas, Gertrud Müller","doi":"10.1590/S1984-29612024024","DOIUrl":"10.1590/S1984-29612024024","url":null,"abstract":"<p><p>The aim of this study was to record Centrorhynchus sp. associated with the exotic species Aquarana catesbeiana (bullfrog) in southern Brazil and to present a checklist of vertebrate hosts in South America. Twenty-nine adults and juveniles of A. catesbeiana were collected in Capão do Leão, state of Rio Grande do Sul, Brazil, between October 2019 and December 2020. We found 275 specimens of Centrorhynchus sp. cystacanths in the stomach musculature and coelomic cavity of 55.1% of hosts (16). There was no significant differences in the prevalence and mean intensity of infection with cystacanths when compared males and females of A. catesbeiana. The prevalence was significantly higher in adults than in juveniles. The checklist presents 106 species of vertebrate hosts and 14 taxa of Centrorhynchus recorded in nine South American countries. Avian were the main definitive hosts of Centrorhynchus spp. and snakes Dipsadidae, anurans Hylidae and Leptodactylidae the main paratenic hosts in South America. This is the first record of Centrorhynchus cystacanths in A. catesbeiana in the South America. The study provides tools to help understand the parasitic relationships between species of Centrorhynchus and A. catesbeiana and other hosts in areas where bullfrog have been introduced.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e015823"},"PeriodicalIF":1.3,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11253826/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141248868","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
Ehrlichia spp. infection worsens cardiac damage in dogs with canine visceral leishmaniasis. 埃里希氏菌感染会加重犬内脏利什曼病患者的心脏损伤。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-05-31 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024023
Leticia Gomes Zanfagnini, Janildo Ludolf Reis Junior, Vinícius Novaes Rocha, Soraia Figueiredo Souza, Karina Yukie Hitara, Mary Marcondes, Acácio Duarte Pacheco
{"title":"Ehrlichia spp. infection worsens cardiac damage in dogs with canine visceral leishmaniasis.","authors":"Leticia Gomes Zanfagnini, Janildo Ludolf Reis Junior, Vinícius Novaes Rocha, Soraia Figueiredo Souza, Karina Yukie Hitara, Mary Marcondes, Acácio Duarte Pacheco","doi":"10.1590/S1984-29612024023","DOIUrl":"10.1590/S1984-29612024023","url":null,"abstract":"<p><p>In endemic areas for canine visceral leishmaniasis (CVL), the occurrence of coinfection with other pathogens, such as Ehrlichia spp., has been associated with worsening of the clinical condition. The study aimed to evaluate the occurrence of histological changes in the myocardia of dogs naturally infected with Leishmania chagasi with or without coinfection with Ehrlichia spp.. We evaluated paraffin-embedded myocardial sections from 31 dogs, affected by either L. chagasi alone or coinfected with L. chagasi and Ehrlichia spp., to compare the extent and degree of cardiac damage. The blocks were divided into two groups. G1 (dogs infected only by L. chagasi) and G2 (dogs coinfected with L. chagasi and Ehrlichia spp.). The right atrium free wall, right ventricle free wall, left ventricle, and interventricular septum of all groups were evaluated. Cardiac alterations were observed in 41.93% (52/124) of the fragments evaluated and inflammatory infiltrate was the most common pattern found. The G2 group showed a higher incidence of myocarditis, with 61.53% (32/52), compared to the G1 group, in which 20 out of 72 cases (27.7%) exhibited histopathological changes (p <0.05). These findings confirmed that coinfection can potentiate cardiac damage in dogs.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e018223"},"PeriodicalIF":1.3,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11253817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141248873","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 Myxobolus spp. (Myxozoa) in the blood of Metynnis lippincottianus (Osteichthyes: Serrasalmidae) from eastern Amazon, Brazil. 巴西亚马孙河东部Metynnis lippincottianus(硬骨鱼类:Serrasalmidae)血液中的Myxobolus spp.
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-05-17 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024022
Nyelle Priscila Brito Façanha, Rafaela Franco de Araújo, Aldi Feiden, Géssica Laila Matos da Silva, Maria Danielle Figueiredo Guimarães Hoshino, Eliane Tie Oba Yoshioka, Marcela Nunes Videira
{"title":"Occurrence of Myxobolus spp. (Myxozoa) in the blood of Metynnis lippincottianus (Osteichthyes: Serrasalmidae) from eastern Amazon, Brazil.","authors":"Nyelle Priscila Brito Façanha, Rafaela Franco de Araújo, Aldi Feiden, Géssica Laila Matos da Silva, Maria Danielle Figueiredo Guimarães Hoshino, Eliane Tie Oba Yoshioka, Marcela Nunes Videira","doi":"10.1590/S1984-29612024022","DOIUrl":"10.1590/S1984-29612024022","url":null,"abstract":"<p><p>Myxozoans are obligatory parasites and can be found in various organs and bloodstreams of fish, thus, the objective of this work was to describe the occurrence of Myxobolus spp. in the circulating blood of Metynnis lippincottianus from River Curiaú, Macapá City, eastern Amazon, Brazil. The samples of M. lippincottianus (11) were caught using cast net and gillnets. The fish blood was collected by puncturing the caudal vessel, using needles and syringes containing 10% of EDTA solution. Blood smear were prepared and panchromatic stained with a combination of May Grunwald-Giemsa-Wright, for observation and examination of the parasitic structures in optical microscope. Tissues from the kidney was examined using specific stereoscopic binoculars to check for the presence of cysts, lesions and parasites. The prevalence of Myxobolus spp. infecting the circulating blood of the fish was 36.36% (4/11) and 15 spores of mixosporyds were visualized. Myxobolus spp. had a prevalence of 54.55% (6/11) in host's kidney tissue and the morphometric spores data converge with observed in the blood. The morphological characteristics of the spores in the blood samples revealed two morphotypes of Myxobolus spp. This is the sixth occurrence recorded of Myxobolus spp. infecting fish blood in Brazil.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e016123"},"PeriodicalIF":1.3,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11104504/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141077049","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
In vitro and in silico studies of the acaricidal and anticholinesterase activities of Randia aculeata seeds against the southern cattle tick Rhipicephalus (Boophilus) microplus. 针对南方牛蜱 Rhipicephalus (Boophilus) microplus 的 Randia aculeata 种子杀螨和抗胆碱酯酶活性的体外和硅学研究。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-04-29 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024021
Aarón Salvador Bustos-Baena, José Luis Bravo-Ramos, Dora Romero-Salas, Sokani Sánchez-Montes, Luis Arturo Ortiz-Carbajal, María Guadalupe Sánchez-Otero
{"title":"In vitro and in silico studies of the acaricidal and anticholinesterase activities of Randia aculeata seeds against the southern cattle tick Rhipicephalus (Boophilus) microplus.","authors":"Aarón Salvador Bustos-Baena, José Luis Bravo-Ramos, Dora Romero-Salas, Sokani Sánchez-Montes, Luis Arturo Ortiz-Carbajal, María Guadalupe Sánchez-Otero","doi":"10.1590/S1984-29612024021","DOIUrl":"https://doi.org/10.1590/S1984-29612024021","url":null,"abstract":"<p><p>Rhipicephalus (Boophilus) microplus is a leading cause of significant economic losses in the livestock industry, and tick populations have developed multiple forms of resistance to acaricides; therefore, the potential of novel natural bioactive compounds that are effective for targeting ticks must be addressed. The aim of this study was to evaluate the acaricidal and anticholinesterase activities of R. aculeata seeds and to identify naturally occurring compounds that potentially inhibit anticholinesterase through in silico docking. The acaricidal activity of the extract of R. aculeata seeds against larval and adult R. microplus ticks was assessed through immersion tests. Inhibition of anticholinesterase activity was measured spectrophotometrically. Extracts of R. aculeata seeds showed activity against larvae and engorged females of R. microplus, and a reduction in the reproductive index were also observed. Rutin, chlorogenic acid, quercetin, and epicatechin exhibited noteworthy interactions with the active site residues of RmAChE. These findings could significantly contribute to the exploration of novel natural products that can potentially inhibit RmAChE and could be used in the development of new acaricides for tick control.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e001524"},"PeriodicalIF":1.3,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11065400/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140872324","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
Prevalence and seasonal aspects of parasitism by Oestrus ovis (Diptera: Oestridae) in sheep from Mato Grosso State, Brazil. 巴西马托格罗索州绵羊体内卵巢虫(双翅目:卵巢虫科)寄生的流行程度和季节性。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-04-22 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024020
Victória Luiza de Barros Silva, Dirceu Guilherme de Souza Ramos, Richard de Campos Pacheco, Diego Montagner Schenkel, Nilton Pereira Dias Junior, Artur Kanadani Campos, Fernando Henrique Furlan
{"title":"Prevalence and seasonal aspects of parasitism by Oestrus ovis (Diptera: Oestridae) in sheep from Mato Grosso State, Brazil.","authors":"Victória Luiza de Barros Silva, Dirceu Guilherme de Souza Ramos, Richard de Campos Pacheco, Diego Montagner Schenkel, Nilton Pereira Dias Junior, Artur Kanadani Campos, Fernando Henrique Furlan","doi":"10.1590/S1984-29612024020","DOIUrl":"10.1590/S1984-29612024020","url":null,"abstract":"<p><p>Oestrus ovis larvae are obligate parasites of vertebrates and cause cavitary myiasis (oestrosis) in sheep and goats. It is also reported as a zoonosis causing ophthalmomyiasis and nasopharyngeal myiasis. Despite being relatively common in Brazil, epidemiological studies on O. ovis are scarce. Considering that the infestation is influenced by the climate and biomes of the studied region, we aimed to investigate the seasonal prevalence of O. ovis among slaughtered sheep in the northern region of the state of Mato Grosso, Brazil. The heads of sheep (n=697) slaughtered at a slaughterhouse in the municipality of Terra Nova do Norte (November 2011 to November 2013) were collected to count, catalog, and identify the larvae found in the upper respiratory tract. Overall, 45.77% (319/697) of the animals were infested with 2,412 recovered larvae, 96.89% (2,337/2,412) of which were identified at the species level as O. ovis. Seasonal variations in prevalence ranged from 41% (spring) to 56% (summer); however, no correlation was observed between prevalence and season, mean humidity, or temperature. In conclusion, parasitism by O. ovis in sheep in the studied area, occurs year-round, considering the occurrence of larvae (L1, L2, and L3) throughout the year, probably because of the area's environmental conditions.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e019923"},"PeriodicalIF":1.3,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11065399/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873131","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 detection of Toxoplasma gondii and Neospora caninum in seabirds collected along the coast of Santa Catarina, Brazil. 在巴西圣卡塔琳娜海岸采集的海鸟中进行弓形虫和犬新孢子虫的分子检测。
IF 1.3 4区 农林科学
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2024-04-22 eCollection Date: 2024-01-01 DOI: 10.1590/S1984-29612024019
Ana Paula Sato, Tiffany Christiny Emmerich da Silva, Thamires Pires de Pontes, Aline Luiza Konell, Luiz Daniel de Barros, Mary Suzan Varaschin, Ivam Moreira de Oliveira Junior, Adrien Wilhelm Dilger Sanches, Rosangela Locatelli-Dittrich
{"title":"Molecular detection of Toxoplasma gondii and Neospora caninum in seabirds collected along the coast of Santa Catarina, Brazil.","authors":"Ana Paula Sato, Tiffany Christiny Emmerich da Silva, Thamires Pires de Pontes, Aline Luiza Konell, Luiz Daniel de Barros, Mary Suzan Varaschin, Ivam Moreira de Oliveira Junior, Adrien Wilhelm Dilger Sanches, Rosangela Locatelli-Dittrich","doi":"10.1590/S1984-29612024019","DOIUrl":"https://doi.org/10.1590/S1984-29612024019","url":null,"abstract":"<p><p>Toxoplasma gondii and Neospora caninum are two closely related protozoans that infect a wide range of animals, including birds. However, the occurrence of N. caninum and T. gondii in seabirds is unknown. Therefore, this study aimed to determine the presence of T. gondii and N. caninum DNA in tissue samples of seabirds. Tissue samples of the pectoral muscles, heart, and brain were collected from 47 birds along the coastline of Santa Catarina State, SC, Brazil. The DNA was extracted from the tissues and screened using nested-PCR (nPCR) targeting internal transcribed spacer 1 (ITS1). T. gondii DNA was detected in tissues from seven seabirds (7/47, 14.8%), kelp gull (Larus dominicanus) (5/21), and Manx shearwater (Puffinus puffinus) (2/8). N. caninum DNA was detected in tissues of nine seabirds (9/47, 19.1%), the kelp gull (L. dominicanus) (4/21), Manx shearwater (P. puffinus) (2/8), neotropic cormorant (Phalacrocorax brasilianus) (1/4), brown booby (Sula leucogaster) (1/5), and white-chinned petrel (Procellaria aequinoctialis) (1/1); however, no co-infection was observed. In conclusion, this study showed the circulation of N. caninum and T. gondii in seabirds along the coastline of Santa Catarina State. Further studies are required to clarify the role of these birds in the epidemiology of neosporosis and toxoplasmosis.</p>","PeriodicalId":48990,"journal":{"name":"Revista Brasileira De Parasitologia Veterinaria","volume":"33 2","pages":"e003624"},"PeriodicalIF":1.3,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11065398/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140874966","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}
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