|
1
|
Cardoso ERN, Carvalho SF, Dias SA, Santos RA, Tavares MA, Neves LC, Paula WVDF, Pádua GT, de Lima NJ, Paludo RLDR, Silva IS, Bittencourt RBM, dos Santos GC, Nascimento FGDJ, de Paula LGF, Dantas-Torres F, Monteiro CMDO, Krawczak FDS. Susceptibility of Amblyomma sculptum, Vector of Rickettsia rickettsii, Ticks from a National Park and an Experimental Farm to Different Synthetic Acaricides. Pathogens 2023; 12:1304. [PMID: 38003769 PMCID: PMC10675591 DOI: 10.3390/pathogens12111304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Amblyomma sculptum is a relevant tick species from a One Health perspective, playing an important role as a vector of Rickettsia rickettsii, the main agent of spotted fever rickettsiosis in Brazil. In this study, we evaluated the susceptibility of two A. sculptum populations from Goiás state (midwestern Brazil) to different acaricides. The first tick population (GYN strain) originated from an experimental farm, where the ticks are annually exposed to acaricides. The second (PNE strain) was collected in a national park (Emas National Park), where the ticks had not been exposed to acaricides. Immersion tests were conducted with 21-day-old laboratory-reared larvae and nymphs originating from adult ticks collected in the areas mentioned above. The chosen acaricides were two synthetic pyrethroids (cypermethrin and deltamethrin), one organophosphate (chlorfenvinphos), one formamidine (amitraz), and two combinations of pyrethroids and organophosphates (cypermethrin, chlorpyrifos and citronellal; cypermethrin, fenthion and chlorpyrifos). Mortality data were used to determine the lethal concentration (LC) values at which 50%, 90%, and 99% of the ticks died (LC50, LC90, and LC99, respectively), and resistance ratios (RR) were calculated based on the LC values. The RR revealed differences between the acaricide-exposed (GYN) and unexposed (PNE) tick strains. The PNE strain larvae and nymphs were susceptible to all the tested acaricides. The GYN strain larvae were tolerant to cypermethrin, whereas the nymphs were tolerant to deltamethrin, chlorfenvinphos, and the combination of cypermethrin, chlorpyrifos, and citronellal (2 < RR ≤ 10). The GYN strain nymphs were resistant to amitraz (RR > 10). This is the first report of A. sculptum nymphs with resistance to amitraz and tolerance to deltamethrin, chlorfenvinphos, and the combination of cypermethrin, chlorpyrifos, and citronellal.
Collapse
Affiliation(s)
- Ennya Rafaella Neves Cardoso
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Stephani Félix Carvalho
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Sarah Alves Dias
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Rayane Almeida Santos
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Mariana Avelar Tavares
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Lucianne Cardoso Neves
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Warley Vieira de Freitas Paula
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Gracielle Teles Pádua
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Nicolas Jalowitzki de Lima
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Raquel Loren dos Reis Paludo
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Isabela Santos Silva
- Laboratório de Biologia, Ecologia e Controle de Carrapatos—LABEC, Centro de Parasitologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (I.S.S.); (C.M.D.O.M.)
| | - Raphaela Bueno Mendes Bittencourt
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Gabriel Cândido dos Santos
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Flavia Giovana de Jesus Nascimento
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Luiza Gabriella Ferreira de Paula
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| | - Filipe Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ), Recife 50740-465, Brazil;
| | - Caio Marcio De Oliveira Monteiro
- Laboratório de Biologia, Ecologia e Controle de Carrapatos—LABEC, Centro de Parasitologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (I.S.S.); (C.M.D.O.M.)
| | - Felipe da Silva Krawczak
- Laboratório de Doenças Parasitárias—LADOPAR, Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás—UFG, Goiânia 74690-900, Brazil; (E.R.N.C.); (S.F.C.); (S.A.D.); (R.A.S.); (M.A.T.); (L.C.N.); (W.V.d.F.P.); (G.T.P.); (N.J.d.L.); (R.L.d.R.P.); (R.B.M.B.); (G.C.d.S.); (F.G.d.J.N.); (L.G.F.d.P.)
| |
Collapse
|
|
2
|
Krawczak FDS, Calchi AC, Neves LC, Dias SA, da Silva BBF, Paula WVDF, de Paula LGF, Tavares MA, Pádua GT, de Lima NJ, Cardoso ERN, Graziani D, Dantas-Torres F, André MR. Phylogenetic Inferences Based on Distinct Molecular Markers Confirm a Novel Babesia Species ( Babesia goianiaensis nov. sp.) in Capybaras ( Hydrochoerus hydrochaeris) and Associated Ticks. Microorganisms 2023; 11:2022. [PMID: 37630582 PMCID: PMC10459827 DOI: 10.3390/microorganisms11082022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Piroplasmids (order Piroplasmida) are a diverse group of tick-borne protozoa that may cause disease in animals and occasionally in humans. Novel Piroplasmida clades and species have been found in wild animals from Brazil based on the phylogenetic assessment of near-complete 18S rRNA, mitochondrial and heat-shock protein genes. For instance, a putative novel Babesia species has been detected in capybaras and Amblyomma ticks in three Brazilian states. The present work aimed to describe, using phylogenetic assessments based on distinct molecular markers, this novel Babesia species in capybaras and associated ticks (Amblyomma sculptum and Amblyomma dubitatum) sampled in Goiânia city, Goiás state, midwestern Brazil. While the phylogenetic analysis based on both near-complete 18S rRNA and hsp-70 genes positioned the sequences obtained from capybara blood samples into a new clade sister to the Babesia sensu stricto clade, the phylogenetic inference based on the COX-3 amino acid positioned the obtained sequences from capybara blood samples and A. sculptum ticks also into a clade sister to the Theileria sensu stricto clade, highlighting the inappropriateness of this marker inferring evolutionary relationships among piroplasmids. Pairwise distance analysis demonstrated that the divergence rates between the 18S rRNA sequences detected in capybaras and other Piroplasmida already described were very high and ranged from 9.4 to 12.9%. Genotype analysis based on the near-full 18S rRNA sequences of the Piroplasmida detected in capybaras and associated ticks demonstrated the occurrence of high genotype diversity at an intra-species level. In conclusion, phylogenetic analyses based on distinct molecular markers supported the description of Babesia goianiaensis nov. sp. in capybaras and associated Amblyomma ticks. Additionally, a novel phylogenetic clade, apart from the previously described ones, was described in the present study and contributed to untangling the complex evolutionary history of the Piroplasmida.
Collapse
Affiliation(s)
- Felipe da Silva Krawczak
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Ana Cláudia Calchi
- Vector-Borne Bioagents Laboratory (VBBL), Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal 14884-900, Brazil
| | - Lucianne Cardoso Neves
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Sarah Alves Dias
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Bianca Barbara Fonseca da Silva
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Warley Vieira de Freitas Paula
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Luiza Gabriella Ferreira de Paula
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Mariana Avelar Tavares
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Gracielle Teles Pádua
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Nicolas Jalowitzki de Lima
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Ennya Rafaella Neves Cardoso
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Daniel Graziani
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil; (F.d.S.K.); (L.C.N.); (S.A.D.); (B.B.F.d.S.); (L.G.F.d.P.); (M.A.T.); (G.T.P.); (N.J.d.L.); (E.R.N.C.); (D.G.)
| | - Filipe Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife 50740-465, Brazil;
| | - Marcos Rogério André
- Vector-Borne Bioagents Laboratory (VBBL), Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal 14884-900, Brazil
| |
Collapse
|
|
3
|
Neves LC, Paula WVDF, de Paula LGF, da Silva BBF, Dias SA, Pereira BG, Silva BSA, Sevá ADP, Dantas-Torres F, Labruna MB, Krawczak FDS. Detection of Rickettsia spp. in Animals and Ticks in Midwestern Brazil, Where Human Cases of Rickettsiosis Were Reported. Animals (Basel) 2023; 13:ani13081288. [PMID: 37106851 PMCID: PMC10135036 DOI: 10.3390/ani13081288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/23/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Brazilian spotted fever (BSF) is the most important tick-borne diseases affecting humans in Brazil. Cases of BSF have recently been reported in the Goiás state, midwestern Brazil. All cases have been confirmed by reference laboratories by seroconversion to Rickettsia rickettsii antigens. Because serological cross-reactions among different rickettsial species that belong to the spotted fever group (SFG) are common, the agent responsible for BSF cases in Goiás remains unknown. From March 2020 to April 2022, ticks and plasma were collected from dogs, horses and capybaras (Hydrochoerus hydrochaeris), and from the vegetation in an area where BSF cases have been reported and two areas under epidemiological surveillance in Goiás. Horses were infested by Amblyomma sculptum, Dermacentor nitens and Rhipicephalus microplus; dogs by Rhipicephalus sanguineus sensu lato (s.l.), Amblyomma ovale and A. sculptum, and capybaras by A. sculptum and Amblyomma dubitatum. Adults of A. sculptum, A. dubitatum, Amblyomma rotundatum and immature stages of A. sculptum and A. dubitatum, and Amblyomma spp. were collected from the vegetation. DNA of Rickettsia that did not belong to the SFG was detected in A. dubitatum, which was identified by DNA sequencing as Rickettsia bellii. Seroreactivity to SFG and Rickettsia bellii antigens was detected in 25.4% (42/165) of dogs, 22.7% (10/44) of horses and 41.2% (7/17) of capybaras, with higher titers for R. bellii in dogs and capybaras. The seropositivity of animals to SFG Rickettsia spp. antigens demonstrates the circulation of SFG rickettsiae in the region. Further research is needed to fully determine the agent responsible for rickettsiosis cases in this area.
Collapse
Affiliation(s)
- Lucianne Cardoso Neves
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | | | | | | | - Sarah Alves Dias
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | - Brenda Gomes Pereira
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | - Bruno Sérgio Alves Silva
- Directorate of Surveillance in Zoonoses, Superintendence of Health Surveillance, Municipal Health Department, Goiânia 74891-135, Brazil
| | - Anaiá da Paixão Sevá
- Department of Agricultural and Environmental Sciences, Santa Cruz State University, Ilhéus 45662-900, Brazil
| | - Filipe Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife 50740-465, Brazil
| | - Marcelo B Labruna
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
| | | |
Collapse
|
|
4
|
Neves LC, de Sousa-Paula LC, Dias SA, da Silva BBF, Paula WVDF, de Paula LGF, Pereira BG, Pádua GT, Borsanelli AC, Cardoso ERN, Krawczak FDS, Dantas-Torres F. Detection of an Undescribed Babesia sp. in Capybaras and Amblyomma Ticks in Central-Western Brazil. Animals (Basel) 2022; 13:ani13010094. [PMID: 36611703 PMCID: PMC9817508 DOI: 10.3390/ani13010094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Capybaras (Hydrochoerus hydrochaeris) are the largest rodents on Earth. While capybaras are hosts for various tick species, there is limited information regarding the tick-borne pathogens they can carry. We investigated the presence of piroplasmids and Ehrlichia spp. in capybaras and their associated ticks in two peri-urban areas in Goiás state, central-western Brazil. Blood samples collected from 23 capybaras were used to investigate the presence of piroplasmids and Ehrlichia spp. in stained-blood smears and by PCR. Ticks collected from the capybaras were identified morphologically and also tested using PCR for the same pathogens. A total of 955 ticks were collected, including 822 (86.1%) Amblyomma sculptum, 132 (13.8%) Amblyomma dubitatum, and one (0.1%) unidentified larva of Amblyomma sp. Neither the capybaras nor ticks were positive for Ehrlichia spp. However, a stained-blood smear examination revealed the presence of ring-stage and pyriform-shaped merozoites in the erythrocytes of one (4.4%) capybara. In the same way, 47.8% (11/23) and 19.9% (36/181) of blood samples and ticks, respectively, were positive for piroplasmids in the PCR. We successfully sequenced a partial 18S rRNA gene fragment of four samples (two capybaras, one A. sculptum, and one A. dubitatum), and the phylogenetic reconstruction disclosed that the organism reported in the present study clusters within the genus Babesia. Further research is required for a formal delineation of this species (designated as Babesia sp. strain Capybara) and to investigate the hypothesis of A. dubitatum and A. sculptum ticks being vectors.
Collapse
Affiliation(s)
- Lucianne Cardoso Neves
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | - Lucas Christian de Sousa-Paula
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife 50740-465, Brazil
- Tick-Pathogen Transmission Unit, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, Hamilton, MT 59840, USA
| | - Sarah Alves Dias
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | | | | | | | - Brenda Gomes Pereira
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | - Gracielle Teles Pádua
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | - Ana Carolina Borsanelli
- Veterinary and Animal Science School, Federal University of Goiás, Goiânia 74605-220, Brazil
| | | | | | - Filipe Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife 50740-465, Brazil
- Correspondence:
| |
Collapse
|
|
5
|
|
|
6
|
|
|
7
|
Dias SA, Thomaz MT. zeta -function regularization of chiral Jacobians for singular Dirac operators: Finite chiral rotations. Int J Clin Exp Med 1991; 44:1811-1817. [PMID: 10014061 DOI: 10.1103/physrevd.44.1811] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
|
8
|
Carneiro CE, Dias SA, Thomaz MT. zeta -function regularization of chiral Jacobians for singular Dirac operators. Int J Clin Exp Med 1989; 40:4105-4110. [PMID: 10011795 DOI: 10.1103/physrevd.40.4105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
|
9
|
Dias SA. 50th All-India Medical Conference, Calcutta. Inaugural address. J Indian Med Assoc 1975; 64:170-2. [PMID: 1159296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|